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    <id>tag:www.sciencebuddies.org,2009-03-12:/blog/1</id>
    <updated>2010-03-18T20:27:11Z</updated>
    <subtitle>News about Science Buddies science fair project ideas and student, parent, and teacher resources for science fairs and general K-12 science education.</subtitle>
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<entry>
    <title>&quot;Sunny&quot; Photograms</title>
    <link rel="alternate" type="text/html" href="http://www.sciencebuddies.org/blog/2010/03/sunny-photograms.php" />
    <id>tag:www.sciencebuddies.org,2010:/blog//1.96</id>

    <published>2010-03-18T20:24:09Z</published>
    <updated>2010-03-18T20:27:11Z</updated>

    <summary> Botanical print by Anna Atkins, courtesy of The New York Public Library, www.nypl.org These days of mid-March as Spring approaches have been unusually sunny here in the Bay Area. Short sleeves. Sunglasses. Sunscreen. The quest for a bit of...</summary>
    <author>
        <name>Amy</name>
        
    </author>
    
        <category term="Science Fair Project Ideas" scheme="http://www.sixapart.com/ns/types#category" />
    
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        <![CDATA[<div style="float: right; width: 200px; border-left-style:solid; border-left-color: white; border-left-width: medium; padding: 8px; margin: 15px; " >
<div align="center"><img src="/blog/graphics/031810-sunprint-150px-Anna_Atkins_algae_cyanotype.jpg" width="150" height="202" alt="Sample from Anna Atkins." style="padding-bottom: 12px;" border="0"></a></div>
<span class="caption">Botanical print by Anna Atkins, courtesy of The New York Public Library, www.nypl.org</span><br />
</div>

<p>These days of mid-March as Spring approaches have been unusually sunny here in the Bay Area. Short sleeves. Sunglasses. Sunscreen. The quest for a bit of shade. </p>

<p>The rain and fog may be just around the corner, but a sunny afternoon is a great time to explore the colorful composition of light, the filtering properties of various colors, and a light-activated chemical reaction--<span class="emphasis">all while making cool photographic prints without the use of a camera</a>.</p>

<p>The process of "sunprinting" involves using special light-sensitive paper. You place an object on the page to "block" the sunlight. After a few minutes, you remove the object and rinse the paper. The negative space (which had been exposed directly to sunlight) will show up blue. (It's not just any blue, either. It's Prussian Blue, or <I>ferric ferrocyanide</I>, <span class="emphasis">a permanent shade of blue dye created as a result of a chemical reaction between sunlight and the special paper</span>.) In sharp contrast to the appearance of the blue, the positive space will show up in white, x-ray style in appearance. How bright the image is depends on <span class="emphasis">what you use to block the light</span> and <span class="emphasis">what color you use</span> to block the light.</p>

<p>What you end up with is a <span class="emphasis">photogram</span>, a photograph created through the use of paper and light. In 1843, <a href="http://en.wikipedia.org/wiki/Anna_Atkins">Anna Atkins</a> released portions of <I>British Algae: Cyanotype Impressions</i>, the first book illustrated with photographs. Atkins' botanical images, like the one shown above, were all created as <a href="http://en.wikipedia.org/wiki/Cyanotype">cyanotype photograms</a>.</p>

<p>The great thing about sunprinting is that is offers a wonderful chemistry demonstration for a wide range of ages. Even the youngest of students can enjoy the "craft" of sunprinting and learn a bit about the science behind the print they take home. Couple sunprinting with a nature walk, and students can print leaves or flower petals. Older students can explore the effectiveness of various colors as filters, evaluate the importance of ultraviolet light in this printing process, or try one of the other variations noted in the project idea:</p>

<ul class="projectideaslist">
<LI><a href="/science-fair-projects/project_ideas/Chem_p084.shtml?from=Blog">Colorful Chemistry Creations: Make Your Own Sun Print with Color and Sunlight!</a> (<I>Science Buddies Difficulty Level: 3-5</I>)</LI>
</ul>

<p><br />
For classes and families, this project can be a lot of fun. Plus, it combines art and science!</p>]]>
        
    </content>
</entry>

<entry>
    <title>Fun with Seek and Find</title>
    <link rel="alternate" type="text/html" href="http://www.sciencebuddies.org/blog/2010/03/fun-with-seek-and-find.php" />
    <id>tag:www.sciencebuddies.org,2010:/blog//1.95</id>

    <published>2010-03-10T20:34:07Z</published>
    <updated>2010-03-10T20:37:06Z</updated>

    <summary>I love puzzles of all sorts. Word puzzles. Number puzzles. Mazes. Codes. Brain teasers. Not surprisingly, I passed on my willingness to tinker with a pencil and paper in an attempt to solve this or that challenge to my kids....</summary>
    <author>
        <name>Amy</name>
        
    </author>
    
        <category term="Science Fair Project Ideas" scheme="http://www.sixapart.com/ns/types#category" />
    
    <category term="distracters" label="distracters" scheme="http://www.sixapart.com/ns/types#tag" />
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    <category term="whereswaldo" label="Where&apos;s Waldo" scheme="http://www.sixapart.com/ns/types#tag" />
    
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        <![CDATA[<p>I love puzzles of all sorts. Word puzzles. Number puzzles. Mazes. Codes. Brain teasers. </p>

<p>Not surprisingly, I passed on my willingness to tinker with a pencil and paper in an attempt to solve this or that challenge to my kids. Years ago, we spent countless hours poring over the pages of  <I>I Spy</I>, <I>Where's Waldo</I>, and various spin-offs on the "can you find it hidden on this page" concept. In addition to the regular <I>I Spy</I> titles, the <I>Can You See What I See?</I> books by <a href="http://www.amazon.com/s?ie=UTF8&keywords=Walter%20Wick&index=blended">Walter Wick</a> (one of the best-known <a href="http://en.wikipedia.org/wiki/Walter_Wick">photographers</a> for the <I>I Spy</I> series) are wonderful and beautifully photographed.</p>

<p><I>I Spy</I>-type books have recently made a huge comeback in my house, and the reality is that some are harder than others. We love Pokemon, but with kids ages 6 and 9, the seek-and-find Pokemon series ended up being too easy. It was fun to find our favorite characters, but it didn't take long to spot all the targets and whiz right on through an entire book (and then bemoan the cost of a hardback book that is so quickly "done"). <I>Where's Waldo,</I> by comparison, tends to be much more difficult and time-consuming.</p>

<p>What makes one seek-and-find harder than the next?</p>

<p>You probably can make some educated guesses about what's going on and how seek-and-finds can be configured for a variety of age ranges and difficulty levels. Scientifically speaking, much of the "challenge factor" can be boiled down to <span class="emphasis">the degree of interference</span> presented in the picture or photograph. </p>

<p><br />
<span class="subhead-blog"><B>Brain on a Quest</B></span></p>

<p>As you look for the target item, you are doing a visual search, sorting and sifting through and weeding out the things that are "not right" as you seek the exact match for your target. How many things are "not right," and what they look like, what color they are, and how close they appear to each other and to the target all contribute to the difficulty of a seek-and-find. </p>

<p>For example, in the following three illustrations, the "orange upright 5" is quite easy to spot in the first image. It's a bit more difficult in the second image. In the third image, <span class="emphasis">the number of distracters has increased</span> and <span class="emphasis">the distracters are the same color as the target</span>. Both of these factors add to the challenge involved in quickly locating the target. </p>

<div align="center">
<img src="/blog/graphics/waldo1-150.png" alt="seek and find sample" border="0" width="150" height="152" style="padding: 6px;">
<br /><br />
<img src="/blog/graphics/waldo2-150px.png" alt="seek and find sample" border="0" width="150" height="151" style="padding: 6px;">
<br /><br />
<img src="/blog/graphics/waldo3-150px.png" alt="seek and find sample" border="0" width="150" height="149" style="padding: 6px;">
</div>

<p><span class="subhead-blog"><B>A Range of Variables</B></span></p>

<p>Which feature of the distracter is more important? Is it the color? Or the shape (and the similarity to the shape of the target)? Is it the number of distracters?</p>

<p>Curious?</p>

<p>If you love a good puzzle, you might enjoy putting these questions to the test with the Science Buddies <a href="/science-fair-projects/project_ideas/HumBeh_p032.shtml?from=Blog">The Brains Behind 'Where's Waldo?'</a> project idea. Using an online application, you can set up your own basic "seek-and-find" pages and put test them with a set of volunteers. </p>

<p>Once you understand the science behind what is going on, the sky's the limit in terms of what real-world simulations you might set up and photograph. You might just have your own line of seek-and-find titles lurking inside you!</p>]]>
        
    </content>
</entry>

<entry>
    <title>Speed of Light: Lost in the Mail </title>
    <link rel="alternate" type="text/html" href="http://www.sciencebuddies.org/blog/2010/03/speed-of-light-lost-in-the-mail.php" />
    <id>tag:www.sciencebuddies.org,2010:/blog//1.94</id>

    <published>2010-03-09T19:51:10Z</published>
    <updated>2010-03-09T19:57:45Z</updated>

    <summary>A &quot;lost&quot; science fair project report arrived at Science Buddies today. The project was apparently found loose in the US mail system somewhere in the postal routing process. Surprisingly, the person that found it didn&apos;t simply toss it in the...</summary>
    <author>
        <name>Science Buddies</name>
        
    </author>
    
    <category term="sciencebuddies" label="Science Buddies" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="sciencefairproject" label="science fair project" scheme="http://www.sixapart.com/ns/types#tag" />
    
    <content type="html" xml:lang="en" xml:base="http://www.sciencebuddies.org/blog/">
        <![CDATA[<p>A "lost" science fair project report arrived at Science Buddies today. The project was apparently found loose in the US mail system somewhere in the postal routing process. Surprisingly, the person that found it didn't simply toss it in the recycling but looked closely enough at the report to realize it is a student's work and that the student was working on a Science Buddies project idea. </p>

<p>The report was forwarded to us here at Science Buddies.</p>

<p>The report is based on the Science Buddies <a href="http://www.sciencebuddies.org/science-fair-projects/project_ideas/Phys_p056.shtml">Measuring the Speed of Light with a Microwave Oven</a> project idea and was written by Simon Hong for Mrs. Reed. (The mail was sent to us by a postal department in Miami, FL.)</p>

<p>If you know Simon or Mrs. Reed, can you let us know?</p>]]>
        
    </content>
</entry>

<entry>
    <title>The &quot;Tilt&quot; of Time </title>
    <link rel="alternate" type="text/html" href="http://www.sciencebuddies.org/blog/2010/03/the-tilt-of-time.php" />
    <id>tag:www.sciencebuddies.org,2010:/blog//1.92</id>

    <published>2010-03-03T16:52:49Z</published>
    <updated>2010-03-03T16:54:59Z</updated>

    <summary>We know the immediate and visible devastation earthquakes can cause, and last month, after the earthquake in Haiti, we posted a set of projects that offer good background material and talking points for discussion of earthquakes and plate tectonics. What...</summary>
    <author>
        <name>Science Buddies</name>
        
    </author>
    
        <category term="Science Fair News" scheme="http://www.sixapart.com/ns/types#category" />
    
        <category term="Science Fair Project Ideas" scheme="http://www.sixapart.com/ns/types#category" />
    
    <category term="axialtilt" label="axial tilt" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="axistiltandtime" label="axis tilt and time" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="chiliearthquake" label="chili earthquake" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="earthtilt" label="earth tilt" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="sciencebuddies" label="Science Buddies" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="sciencefair" label="science fair" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="sciencefairproject" label="science fair project" scheme="http://www.sixapart.com/ns/types#tag" />
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    <content type="html" xml:lang="en" xml:base="http://www.sciencebuddies.org/blog/">
        <![CDATA[<p>We know the immediate and visible devastation earthquakes can cause, and last month, after the earthquake in Haiti, <a href="/blog/2010/01/in-the-wake-of-shake.php">we posted a set of projects</a> that offer good background material and talking points for discussion of earthquakes and plate tectonics. What students may not realize is that the impact of a big shake does more than cause structural damage. </p>

<p><span class="emphasis">In fact, an earthquake can alter the tilt of the Earth to such a degree that the length of time in a "day" changes.</span> The change is <I>very small</I>&mdash;we are talking seconds broken into millions&mdash;so small that our timekeeping methods of hours and days isn't effected.  <span class="emphasis">It is still fascinating to realize, however, that earthquakes can alter the tilt of the planet and that the amount of seconds in a day <I>is not absolute</I>. </span></p>

<p><a href="http://www.sciencedaily.com/releases/2010/03/100302084522.htm">Science Daily</a> reported this week that research suggests that the February 27, 8.8 earthquake in Chili may have shifted the Earth's axis and shortened the day. With a projected change in axis of "2.7 milliarcseconds (about 8 centimeters, or 3 inches)," scientists have determined that the earthquake may have "shortened the length of an Earth day by about 1.26 microseconds (a microsecond is one millionth of a second)."</p>

<p>The following project ideas can help students talk about and visualize the importance of the degree of "tilt" of the Earth by examining the change of "seasons" on Earth:</p>

<ul class=projectideaslist">
<li><a href="/science-fair-projects/project_ideas/Astro_p033.shtml?from=Blog">The Reasons for the Seasons</a> (<I>Science Buddies difficulty level: 4-5</I>)</li>

<p><li><a href="/science-fair-projects/project_ideas/EnvSci_p051.shtml?from=Blog"> A Matter of Degrees: How Does the Tilt of Earth's Axis Affect the Seasons?</a> (<I>Science Buddies difficulty level: 7-8</I>)</li><br />
</ul><br />
</p>]]>
        
    </content>
</entry>

<entry>
    <title>Lip Balm Science</title>
    <link rel="alternate" type="text/html" href="http://www.sciencebuddies.org/blog/2010/03/lip-balm-science.php" />
    <id>tag:www.sciencebuddies.org,2010:/blog//1.91</id>

    <published>2010-03-02T19:20:08Z</published>
    <updated>2010-03-02T19:33:00Z</updated>

    <summary>Have you ever noticed how many kinds and brands and flavors of lip balm appear in the cosmetics department at your favorite store? Why are there so many variations? Which one do you like most? Why do you like it?...</summary>
    <author>
        <name>Amy</name>
        
    </author>
    
        <category term="Kitchen Chemistry" scheme="http://www.sixapart.com/ns/types#category" />
    
        <category term="Science Fair Project Ideas" scheme="http://www.sixapart.com/ns/types#category" />
    
    <category term="cosmetology" label="cosmetology" scheme="http://www.sixapart.com/ns/types#tag" />
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    <category term="makinglipbalm" label="making lip balm" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="makinglotion" label="making lotion" scheme="http://www.sixapart.com/ns/types#tag" />
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    <content type="html" xml:lang="en" xml:base="http://www.sciencebuddies.org/blog/">
        <![CDATA[<p>Have you ever noticed how many kinds and brands and flavors of lip balm appear in the cosmetics department at your favorite store? Why are there so many variations? Which one do you like most? Why do you like it? What kinds of differences do you notice between types? </p>

<p>It might surprise you to discover that lip balm is something you can make at home. In fact, just like mixing up a batch of cookies, making lip balm follows a basic recipe. And, just as there are many recipes for cookies and many ways to alter the basic "formula" for making cookies, there are many ways you can alter and customize the "formula" (or "recipe") for making your own lip balm.</p>

<p><br />
<b><span class="subhead-blog">What's On the Inside</span></b></p>

<p>A look at the ingredients list on the side of your favorite tube of lip balm might show a number of ingredients. "What" goes into each formula and "how much" of each ingredient is used changes the consistency, scent, flavor, creaminess, and emollience.</p>

<p>The ingredients list on the lip balm I have in front of me reads this way:</p>

<blockquote><I>
Beeswax, coconut oil, sunflower oil, tocopheryl acetate & tocopherol (vitamin E), lanolin, peppermint oil, comfrey root extract, rosemary extract.</I></blockquote>

<p>This is a lip balm manufactured by a well-known company that creates "natural" lotions, soaps, and balms, and yet I see in this list the basic ingredients of any lip balm... an oil and a wax.</p>

<p>This company has come up with its own combination of ingredients and made choices about which oil and which wax to use in its custom blend of balm. I like the choices the company has made. You might like something creamier. Or you might prefer something without a mint. Or, you might find that you like lip balms best that use a different wax or a different oil. Each ingredient contributes to the way the balm feels, tastes, spreads, and lasts.</p>

<p><br />
<b><span class="subhead-blog">Kitchen Chemistry</span></b></p>

<p>Do you know what emulsifiers are? Do you know what an emollient is? Maybe not. But when you mix up your own lip balm, these concepts come into play. Making lip balm can be fun and practical, but it's also chemistry.</p>

<p>In the <a href="/science-fair-projects/project_ideas/Chem_p022.shtml?from=Blog">Potions and Lotions: Lessons in Cosmetic Chemistry</a> Science Buddies science project, you can try a few basic recipes for lip balm and then do some product testing with a group of friends or volunteers to see which ones are most popular. Or you might evaluate which blend lasts longest or spreads most easily.</p>

<p>After you try a few basic recipes, you can experiment with other ingredients, change percentages, or combinations of ingredients, and expand your research to come up with your very own blend of lip balm&mdash;your perfect formula. </p>

<p>If your lip balms are a hit, you might also consider making your own lotions or even your own perfumes. These two project ideas can help get you started on a fun science fair project or on your own line of lotions and balms to give away or to sell!</p>

<ul class="projectideaslist">
<li><a href="/science-fair-projects/project_ideas/Chem_p022.shtml?from=Blog">Potions and Lotions: Lessons in Cosmetic Chemistry</a> (<I>Science Buddies' difficulty level: 5-8</I>)</li>

<p><li><a href="/science-fair-projects/project_ideas/Chem_p083.shtml?from=Blog">Scintillating Scents: The Science of Making Perfume</a> (<I>Science Buddies' difficulty level: 6</I>)<br />
</ul><br />
</p>]]>
        
    </content>
</entry>

<entry>
    <title>Scientist&apos;s Pick: No Pain, Lots of Game</title>
    <link rel="alternate" type="text/html" href="http://www.sciencebuddies.org/blog/2010/03/scientists-pick-no-pain-lots-of-game.php" />
    <id>tag:www.sciencebuddies.org,2010:/blog//1.89</id>

    <published>2010-03-01T16:58:53Z</published>
    <updated>2010-03-02T17:11:10Z</updated>

    <summary>Note: This month&apos;s &quot;Scientist&apos;s Pick&quot; is from Science Buddies&apos; staff scientist, Kristin Strong. Kristin presented this project to the Science Buddies&apos; team in February. It&apos;s got an icy, winter theme! ~ Science Buddies&apos; Editorial Staff Project: No Pain, Lots of...</summary>
    <author>
        <name>Staff Scientist</name>
        
    </author>
    
        <category term="Science Fair Project Ideas" scheme="http://www.sixapart.com/ns/types#category" />
    
        <category term="Scientist&apos;s Pick" scheme="http://www.sixapart.com/ns/types#category" />
    
    <category term="computerandvideogamesprojects" label="computer and video games projects" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="gamesandpain" label="games and pain" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="painmanagement" label="pain management" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="sciencebuddies" label="Science Buddies" scheme="http://www.sixapart.com/ns/types#tag" />
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    <content type="html" xml:lang="en" xml:base="http://www.sciencebuddies.org/blog/">
        <![CDATA[<p><I>Note: This month's "Scientist's Pick" is from Science Buddies' staff scientist, Kristin Strong. Kristin presented this project to the Science Buddies' team in February. It's got an icy, winter theme! ~ Science Buddies' Editorial Staff</I></p>

<p><br />
<strong>Project:</strong> <A HREF="/science-fair-projects/project_ideas/Games_p016.shtml?from=Blog">No Pain, Lots of Game</A><br />
<strong>Scientist: </strong>Kristin Strong<br />
<strong>Science Buddies' Difficulty Level:</strong> 4</p>

<p>My favorite project of recent ones I've worked on is the Science Buddies project, <A HREF="http://www.sciencebuddies.org/science-fair-projects/project_ideas/Games_p016.shtml?from=Blog">No Pain, Lots of Game</A>, a project that looks at the relationship between video gaming and pain management. </p>

<p><br />
<span class="subhead-blog"><B>Personal Connection</B></span></p>

<p>This project grew out of personal experience with my oldest daughter. When she was five years old, we discovered that she had a birth defect requiring chest and abdominal surgery. During her hospital stay, her pain was managed primarily with morphine, but during painful procedures, the surgeon advised us to <span class="emphasis">put on a movie and to get her engaged in that before starting the procedure</span>. During her months of recovery at home, my daughter would often wake up in pain, and again I used a combination of medication and videos to help her get through the night. </p>

<p>In 2008, when Science Buddies opened up a new interest area section on <a href="/science-fair-projects/recommender_interest_area.php?ia=Games&from=Blog">computer and video games</a>, I wondered if any research was being done on using computer or video games to manage pain. I learned that indeed, throughout the country, studies are being done to see if video games and virtual reality games like <A HREF="http://www.youtube.com/watch?v=jNIqyyypojg">Snow World</A> can help alleviate pain in patients suffering from burns. Burn units were chosen for these studies because burns are some of the most painful kinds of injuries that people must endure, sometimes requiring months of daily wound care. <span class="emphasis">I decided to try and write a science fair project for students that would parallel this real-world research.</span></p>

<p><br />
<span class="subhead-blog"><B>Putting It All Together</B></span></p>

<div style="float: right; width: 200px; border-left-style:solid; border-left-color: black; border-left-width: medium; padding: 8px; margin: 15px; " >
<div align="center"><img src="/science-fair-projects/project_ideas/HumBio_img005.jpg" width="200" alt="This photo shows a bare foot with the heel resting on the rim of a large bowl of ice water and the toes submerged in the ice water." style="padding-bottom: 12px;" border="0"></a></div>
<span class="caption"> An "ice bath" was used to create a painful circumstance for volunteers. We were then able to test to see if playing a video game helped reduce awareness of pain (or increase the ability to withstand and block pain).</span><br />
</div>

<p>The question that we're trying to answer with this video game science fair project is: <span class="emphasis">Can video games be included in the repertoire of pain management strategies?</span></p>

<p>To try and answer this question, I decided to use an "ice bath" as a way to create pain without causing lasting injury. To test the project, brave volunteers were seated in a chair and asked to put the front part of one foot in the ice water, a situation that is uncomfortable and "painful." We asked each volunteer to leave his or her foot in as long as possible, and we measured and recorded the amount of time.  </p>

<p>To test our theory about video games, we then had each volunteer play a video or computer game for 5 min, and, <I>while the volunteer continued to play the game,</I> the other forefoot was submerged in ice water for as long as the volunteer could stand that.  <br />
The data was then analyzed to see if the video games made a difference in how long the volunteers were able to endure the ice bath.</p>

<p><br />
<span class="subhead-blog"><B>Real-World Results</B></span></p>

<p>I like this project because it can be done with things that many families have on hand, like ice, bowls, a stopwatch or way to count seconds, and computer or video games.  In just a few minutes, you can set up an experiment that parallels research being done at big universities and medical schools. I think students will find it interesting to discover that there is great individual variation in sensitivity to pain&mdash;and in the ability of games to reduce or "dial down" pain.  </p>

<p>Plus, there's a lot of room to extend and customize this project. One variation to the main project is to test various types of games to see if the "kind" of game or media source alters the outcome. Is <I>Donkey Kong</I> better than </I>Dragon Warrior</I> for helping block pain?  Is TV just as good as a video game? </p>

<p>With an ice water bath and some brave volunteers, kids can find out.</p>

<p>~Kristin</p>

<p><br />
<hr noshade style="color: #000000;"></p>

<p><br />
For similar project ideas, explore the<a href="http://www.sciencebuddies.org/science-fair-projects/recommender_interest_area.php?ia=Games&from=Blog"> Video & Computer Games interest area</a>, sponsored by AMD, in the Science Buddies Project Directory. <br />
</p>]]>
        
    </content>
</entry>

<entry>
    <title>A Strong Hypothesis </title>
    <link rel="alternate" type="text/html" href="http://www.sciencebuddies.org/blog/2010/02/a-strong-hypothesis.php" />
    <id>tag:www.sciencebuddies.org,2010:/blog//1.88</id>

    <published>2010-02-23T17:23:39Z</published>
    <updated>2010-03-01T16:46:42Z</updated>

    <summary> &quot;If _____[I do this] _____, then _____[this]_____ will happen.&quot; Sound familiar? It should. This formulaic approach to making a statement about what you &quot;think&quot; will happen is the basis of most science fair projects and much scientific exploration. Step...</summary>
    <author>
        <name>Science Buddies</name>
        
    </author>
    
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        <![CDATA[
<BR />
<blockquote>
<span style="font-weight: bold; font-size: 110%; color: red; padding: 25px;">"If _____[I do this] _____, then _____[this]_____ will happen." </span>
</blockquote>
<BR />
<BR />
<P>Sound familiar? It should. This formulaic approach to making a statement about what you "think" will happen is the basis of most science fair projects and much scientific exploration. </P>

<div style="float: right; width: 150px; border-left-style:solid; border-left-color: black; border-left-width: medium; padding: 6px; margin: 10px;" >
<span style="font-size: 150%; color: black;">Step by Step</span>
<BR />
You can see from the basic outline of the <a href="/science-fair-projects/project_scientific_method.shtml?from=Blog">Scientific Method</a> below that writing your hypothesis comes early in the process:
<BR />
<OL>
<LI>Ask a Question 
<LI>Do Background Research 
<LI><B>Construct a Hypothesis </B>
<LI>Test Your Hypothesis by Doing an Experiment 
<LI>Analyze Your Data and Draw a Conclusion 
<LI>Communicate Your Results 
</OL>
</div>

<P>Following the <a href="/science-fair-projects/project_scientific_method.shtml?from=Blog">scientific method</a>, we come up with a question that we want to answer, we do some initial research, and then <b>before</b> we set out to answer the question by performing an experiment and observing what happens, we first clearly identify what we "think" will happen. </P>

<P><span class="emphasis">We make an "educated guess."</span></P>

<P><span class="emphasis">We write a hypothesis.</span></P>

<P><span class="emphasis">We set out to prove or disprove the hypothesis.</span></P>

<P>What you "think" will happen, of course, should be based on your preliminary research and your understanding of the science and scientific principles involved in your proposed experiment or study. In other words, <span class="emphasis">you don't simply "guess."</span> You're not taking a shot in the dark. You're not pulling your statement out of thin air. Instead, you make <span class="emphasis">an "educated guess"</span> based on what you already know and what you have already learned from your research. </P>

<P>If you keep in mind the format of a well-constructed hypothesis, you should find that writing your hypothesis is not difficult to do. You'll also find that in order to write a solid hypothesis, you need to understand what your <a href="/science-fair-projects/project_variables.shtml?from=Bog">variables</a> are for your project. It's all connected!</P>


<blockquote>
<span style="font-weight: bold; font-size: 110%; color: red; padding: 25px;">If I never water my plant, it will dry out and die.</span>
</blockquote>

<P>That seems like an obvious statement, right? The above hypothesis is too simplistic for most middle- to upper-grade science projects, however. As you work on deciding what question you will explore, you should be looking for something for which the answer is not already obvious or already known (to you). When you write your hypothesis, it should be based on your "educated guess" not on known data. Similarly, the hypothesis should be written <span class="emphasis">before</span> you begin your experimental procedures&mdash;not after the fact.</P>

<BR />
<BR />

<P><span class="subhead-blog"><b>Hypotheses Tips</b></span></P>

<P>Our staff scientists offer the following tips for thinking about and writing good hypotheses.</P>

<UL>
<LI><span class="emphasis">The question comes first.</span> Before you make a hypothesis, you have to clearly identify the question you are interested in studying. </LI>

<LI><span class="emphasis">A hypothesis is a statement, not a question.</span> Your hypothesis is not the scientific question in your project. The hypothesis is an educated, testable prediction about what will happen.</LI>

<LI><span class="emphasis">Make it clear.</span> A good hypothesis is written in clear and simple language. Reading your hypothesis should tell a teacher or judge exactly what you thought was going to happen when you started your project.</LI>

<LI><span class="emphasis">Keep the variables in mind.</span> A good hypothesis defines the variables in easy-to-measure terms, like who the participants are, what changes during the testing, and what the effect of the changes will be. (For more information about identifying variables, see: <a href="/science-fair-projects/project_variables.shtml?from=Blog">Variables in Your Science Fair Project</a>.)</LI>

<LI><span class="emphasis">Make sure your hypothesis is "testable."</span> To prove or disprove your hypothesis, you need to be able to do an experiment and take measurements or make observations to see how two things (your variables) are related. You should also be able to repeat your experiment over and over again, if necessary. 

<P>To create a "testable" hypothesis make sure you have done all of these things:</P>
<UL>
<LI>Thought about what experiments you will need to carry out to do the test. </LI>
<LI>Identified the variables in the project.</LI>
<LI>Included the independent and dependent variables in the hypothesis statement. (This helps ensure that your statement is <I>specific</I> enough.</LI>
</UL>
</LI>

<LI><span class="emphasis">Do your research.</span> You may find many studies similar to yours have already been conducted. What you learn from available research and data can help you shape your project and hypothesis.</LI>

<LI><span class="emphasis">Don't bite off more than you can chew!</span> Answering some scientific questions can involve more than one experiment, each with its own hypothesis. <b>Make sure your hypothesis is a specific statement relating to a single experiment.</b></LI>
</UL>

<BR />
<BR />
<P><span class="subhead-blog"><b>Putting it in Action</b></span></P>

<P>To help demonstrate the above principles and techniques for developing and writing solid, specific, and testable hypotheses, Sandra and Kristin, two of our staff scientists, offer the following <span class="emphasis">good</span> and <span class="emphasis">bad</span> examples.</P>

<DIV ALIGN="CENTER"><TABLE WIDTH="500" BORDER="0" CELLSPACING="2" CELLPADDING="8" ALIGN="center" CLASS="bodytext table-firstonpage" style="position: relative; display: inline;" ID="tablehowtoBorder"><tr valign="top"><td class="bgcolor-blog bodytext" WIDTH="250" ><span class="subhead-blog"><B>Good Hypothesis</b></span></td>
<td class="bgcolor-blog bodytext" WIDTH="250" ><span class="subhead-blog"><B>Poor Hypothesis</b></span></td>
</tr>
<tr valign="top" class="bodytext" align="left">
<td> <I><B>When there is less oxygen in the water, rainbow trout suffer more lice.</B></I>

<P>Kristin says: "This hypothesis is good because it is testable, simple, written as a statement, and establishes the participants (<I>trout</I>), variables (<I>oxygen in water, and numbers of lice</I>), and predicts effect (<I>as oxygen levels go down, the numbers of lice go up</I>)."</P>
</td>
<td><I><B>Our universe is surrounded by another, larger universe, with which we can have absolutely no contact.</B></I>

<P>Kristin says: "This statement may or may not be true, but it is not a scientific hypothesis. By its very nature, <B> it is not testable</B>. There are no observations that a scientist can make to tell whether or not the hypothesis is correct. This statement is speculation, not a hypothesis."</P>
</td>
</tr>

<tr valign="top" class="bodytext" align="left">
<td><I><B>Aphid-infected plants that are exposed to ladybugs will have fewer aphids after a week than aphid-infected plants which are left untreated.</B></I>  

<P>Sandra says: "This hypothesis gives a clear indication of what is to be tested (<I>the ability of ladybugs to curb an aphid infestation</I>), is a manageable size for a single experiment, mentions the independent variable (<I>ladybugs</I>) and the dependent variable (<I>number of aphids</I>), and predicts the effect (<I>exposure to ladybugs reduces the number of aphids</I>)."</P>
</td>
<td><I><B>Ladybugs are a good natural pesticide for treating aphid infected plants.</B></I>

<P>Sandra says: "This statement is not 'bite size.' Whether or not something is a 'good natural pesticide' is too vague for a science fair project. There is no clear indication of what will be measured to evaluate the prediction."</P>
</td>
</tr>
</table>
</div>

<BR />
<BR />
<P><span class="subhead-blog"><b>Hypotheses in History</b></span></P>

<P>Throughout history, scientists have posed hypotheses and then set out to prove or disprove them. Staff Scientist Dave reminds that scientific experiments become a dialogue between and among scientists and that hypotheses are rarely (if ever) "eternal." In other words, <span class="emphasis">even a hypothesis that is proven true may be displaced by the next set of research on a similar topic,</span> whether that research appears a month or a hundred years later.</P>

<P>A look at the work of Sir Isaac Newton and Albert Einstein, more than 100 years apart, shows good hypothesis-writing in action. </P>

<P>As Dave explains, "A hypothesis is a possible explanation for something that is observed
in nature. For example, it is a common observation that objects that are thrown into the air fall toward the earth. Sir Isaac Newton (1643-1727)  put forth a hypothesis to explain this observation, which might be stated as 'objects with mass attract each other through a gravitational field.'"</P>

<P>Newton's hypothesis demonstrates the techniques for writing a good hypothesis: It is testable. It is simple. It is universal. It allows for predictions that will occur in new circumstances. It builds upon previously accumulated knowledge (e.g., Newton's work explained the observed orbits of the planets). </P>

<P>"As it turns out, despite its incredible explanatory power, Newton's hypothesis was wrong," says Dave. "Albert Einstein (1879-1955) provided a hypothesis that is closer to the truth, which can be stated as 'objects with mass cause space to bend.' This hypothesis discards the idea of a gravitational field and introduces the concept of space as <I>bendable</I>. Like Newton's hypothesis, the one offered by Einstein has all of the characteristics of a good hypothesis."</P>

<P>"Like all scientific ideas and explanations," says Dave, "hypotheses are all partial and temporary, lasting just until a better one comes along."</P>

<P>That's good news for scientists of all ages. There are always questions to answer and educated guesses to make!</P>

<BR />
<BR />
<P><span class="emphasis">If your science fair is over, leave a comment here to let us know what <B>your</B> hypothesis was for your project. </span></P>




]]>
        
    </content>
</entry>

<entry>
    <title>Science Mom Uncovers Science in Gelatin Dessert</title>
    <link rel="alternate" type="text/html" href="http://www.sciencebuddies.org/blog/2010/02/science-mom-uncovers-science-in-gelatin-dessert.php" />
    <id>tag:www.sciencebuddies.org,2010:/blog//1.87</id>

    <published>2010-02-23T01:44:06Z</published>
    <updated>2010-02-23T02:00:41Z</updated>

    <summary>&quot;Science Mom&quot; Courtney Corda appeared live on View from the Bay today to demonstrate the way enzymes and proteins interact when you mix various fruits with gelatin. For Courtney, the kitchen is the perfect place for parents to get hands-on...</summary>
    <author>
        <name>Amy</name>
        
    </author>
    
        <category term="Science Buddies on TV" scheme="http://www.sixapart.com/ns/types#category" />
    
        <category term="Science Fair Project Ideas" scheme="http://www.sixapart.com/ns/types#category" />
    
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        <![CDATA[<p>"Science Mom" Courtney Corda appeared live on View from the Bay today to demonstrate the way enzymes and proteins interact when you mix various fruits with gelatin. For Courtney, the kitchen is the perfect place for parents to get hands-on with kids about science and can be a wonderful way to explore chemistry and to relate scientific principles to everyday activities.</p>

<ul>
<li><a href="/science-fair-projects/project_ideas/FoodSci_p004.shtml?from=Blog">Which Fruits Can Ruin Your Gelatin Dessert?</a> (<I>Science Buddies' Difficulty Level: 4-6</I>)
</li>
</ul>
<br /><br />

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<entry>
    <title>Giving Yourself the Best Chance for Success</title>
    <link rel="alternate" type="text/html" href="http://www.sciencebuddies.org/blog/2010/02/giving-yourself-the-best-chance-for-success.php" />
    <id>tag:www.sciencebuddies.org,2010:/blog//1.86</id>

    <published>2010-02-18T18:39:43Z</published>
    <updated>2010-02-18T19:09:06Z</updated>

    <summary>Yesterday on the Science Buddies Blog, we talked about examples from the science community where scientists are misbehaving. From distorted findings to misrepresentation of data, recent science news abounds with stories of poor behavior among professional scientists. While projects can...</summary>
    <author>
        <name>Science Buddies</name>
        
    </author>
    
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    <category term="successfulscienceprojects" label="successful science projects" scheme="http://www.sixapart.com/ns/types#tag" />
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    <content type="html" xml:lang="en" xml:base="http://www.sciencebuddies.org/blog/">
        <![CDATA[<p>Yesterday on the Science Buddies Blog, we talked about <a href="/blog/2010/02/putting-things-in-perspective-honest-science.php">examples from the science community</a> where scientists are misbehaving. From distorted findings to misrepresentation of data, recent science news abounds with stories of poor behavior among professional scientists.</p>

<p>While projects can and do sometimes fail, sometimes end up quite different than planned, and sometimes present findings that don't match initial hypotheses, you can give yourself the best chance for success by planning ahead.</p>

<p><br />
<span class="subhead-blog"><b>Checklist for a Smooth Science Project</b></span></p>

<p>The following suggestions are designed to help increase your chances for a successful science fair project and a positive science fair experience. </p>

<blockquote>
<ul>
<div style="float: right; width: 150px; border-left-style:solid; border-left-color: black; border-left-width: think; padding: 6px; margin: 10px;" >
<div style="font-size: 150%; color: black;">Routine Project "Checks" Can Help!</span></div>
Teachers can help ensure that projects are not put off until the last minute by grading each step of the process as a separate assignment and putting in place routine "checkpoints" along the way.  For helpful information about structuring science fair projects so that progress is evaluated at several key points or in timed intervals (e.g., weekly), see the <a href="http://www.sciencebuddies.org/science-fair-projects/teacher_resources.shtml?from=Blog#scheduleworksheet">Science Buddies Science Fair Schedule Worksheet</a>.
</span>
</div> 
<li><b>Allow plenty of time. Waiting until the last minute to begin a science fair project is a bad idea.</b> Even for a project that can be conducted in a short amount of time, you need to ensure you have time to perform adequate research. You also need to build in enough time so that if the project doesn't work the first time, you have the chance to perform the necessary steps again.</li>

<p><li><b>Once you've selected your project, plan ahead.</b> Be sure to carefully read the <I>entire</I> project as well as the materials list so that you have a good sense of what steps you'll be taking.</li></p>

<p><LI><b>Gather all of the required materials as soon as possible so that you have everything on hand.</b> Be sure and allow extra time if you are ordering materials. While substitutions are sometimes possible, don't substitute unless you have to&mdash;and unless you are certain the substitution is viable. In some cases, it is best to consider changing projects if you find that you can't get the required materials.</LI></p>

<p><LI><b>Build time into the schedule to do a "dry run,"</b> in case there are unforeseen problems that can be addressed and corrected. An inexperienced cook probably wouldn't try a difficult recipe for the first time when preparing an important meal. Too many things can go wrong! A science project is no different. If your timeline allows it, doing a "trial run" of the project can help make the final project run more smoothly.</LI></p>

<p><LI><b>Carefully follow instructions.</b> Make sure that you follow your experimental procedure step by step to avoid missing something important that could make or break the project. You don't want to doom your results because you thought you needed to add "X" amount and added "y" or because you thought you needed to water your seeds on day "9" when it was really supposed to be on day "3."</LI></p>

<p><LI><b>Be sure and record all of your steps in your <a href="/blog/2010/01/lab-notebooks.php">lab notebook</a>.</b> If something goes wrong, having thorough notes can help you troubleshoot later. You will also need your notes to help prepare your final report.</li></p>

<p><LI>In the end, if the experiment did not work, and you can't fix it, be honest.  Explain what you were hoping to observe and what you <b>did</b> observe. Explain what went wrong and what you feel might account for the results you saw. In other words, <span class="emphasis">what are the possible causes for the project not working</span>? <br />
</ul></p>

<p><span class="emphasis">No matter what: do not fake data. Doing so is cheating and fraud&mdash;and it's against the spirit of the science fair.</span></p>

<p><span class="subhead-blog"><B>It Happens</B></span></p>

<p>Even with careful planning, sometimes a project "goes wrong." It happens to scientists in every field. Sometimes, what went wrong can lead to new understanding, a new study, or even an unexpected discovery. </p>

<p>Stay tuned for some hands-on tips from our staff scientists that can help you troubleshoot what may be happening if your project isn't working. <br />
</p>]]>
        
    </content>
</entry>

<entry>
    <title>Putting Things in Perspective: Honest Science</title>
    <link rel="alternate" type="text/html" href="http://www.sciencebuddies.org/blog/2010/02/putting-things-in-perspective-honest-science.php" />
    <id>tag:www.sciencebuddies.org,2010:/blog//1.85</id>

    <published>2010-02-17T18:23:26Z</published>
    <updated>2010-02-17T18:36:57Z</updated>

    <summary>In recent months, the news has been riddled with stories about professional scientists behaving poorly. In November 2009, a hacker pirated and circulated hundreds of email messages that spawned what has become known as &quot;Climategate,&quot;, a scandal which allegedly involves...</summary>
    <author>
        <name>Science Buddies</name>
        
    </author>
    
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    <category term="troubleshootingscienceproject" label="troubleshooting science project" scheme="http://www.sixapart.com/ns/types#tag" />
    
    <content type="html" xml:lang="en" xml:base="http://www.sciencebuddies.org/blog/">
        <![CDATA[<p>In recent months, the news has been riddled with stories about professional scientists behaving poorly.  In November 2009, a hacker pirated and circulated hundreds of email messages that spawned what has become known as <a href="http://www.nytimes.com/2009/11/21/science/earth/21climate.html">"Climategate,"</a>, a scandal which allegedly involves the systematic and deliberate misrepresentation of statistical data regarding global warming. On the heels of Climategate, the British medical journal <I>Lancet</I> this month <a href="http://www.washingtonpost.com/wp-dyn/content/article/2010/02/02/AR2010020203480.html">retracted a scientific paper</a> because of fraudulent data regarding a link between immunizations and autism, and the American publication <I>Science</I> recently placed a paper under suspicion until it receives additional data. In other news, claims regarding the <a href="http://www.timesonline.co.uk/tol/news/environment/article6991177.ece">rapid melting of Himalayan glaciers</a> have been exposed as "speculative."</p>

<p>These examples from the scientific world are disheartening. They point to a certain level of ethical demise where results that "fit" expected or desired findings are more important than the scientific quest for truth. In each case, faulty findings and misrepresentation of data have had significant impact upon popular thinking and even upon economic planning and spending. </p>

<p>For teachers and students, these examples can be confusing. <span class="emphasis">If the goal of experimentation and research is to test hypotheses, to explain things, to uncover what happens under certain circumstances, and to answer questions that can lead to new knowledge and further discovery, then why lie about what the data shows?</span></p>

<p><br />
<span class="subhead-blog"><b>Why Falsify?</b></span></p>

<p>Scientists are human. It is natural to <I>want</I> to be right. It can be hard to discover in subsequent trials that early findings were not as conclusive as initially believed. It can be hard to have to "qualify" data or suggest that something that seemed breakthrough early on maybe <I>wasn't</I>.  It can hard to admit that something didn't turn out as expected. </p>

<p>The pressure to publish research and findings can contribute to these problems. In the rush to put out new materials, "it can be tempting to take short cuts, to rush data that isn't fully analyzed out the door, or, worst of all, to fabricate data," says Sandra Slutz, Science Buddies lead staff scientist. </p>

<p>Students face similar time constraints and pressure, and sometimes students think the only way to get a good grade on a science project is for the project to show exactly what they set out to show. <span class="emphasis">It is important for teachers, students, parents, and those involved in science fairs to create an environment where solid research and testing, where adherence to the <a href="/science-fair-projects/project_scientific_method.shtml?from=Blog">scientific method</a>, and where a spirit of enthusiastic investigation is encouraged &mdash; even if a project, in the end, doesn't turn out as expected.</span> </p>

<p>What students stand to learn from a science project that is conducted properly from start to finish far outweighs the importance of the data fitting the student's original hypothesis or supporting a known scientific principle.</p>

<p></p>

<p><span class="subhead-blog"><b>An Honest Fair</b></span></p>

<p>For teachers, parents, and students, stories of scientific fraud, deception, and misrepresentation in the science community are warning signs and offer concrete examples for talking constructively about the <a href="/science-fair-projects/scifair_value.shtml?from=Blog">value of science fair projects</a>, about "why" we conduct scientific experiments and "why" schools hold science fairs. </p>

<p>A science fair project is supposed to be <span class="emphasis">a learning experience</a>, and teachers and parents need to work together to ensure that the experience is a positive one. <span class="emphasis">Unfortunately, whether you are a middle school student or a professional scientist, experiments don't always turn out the way that you want!</span> That doesn't, however, mean that you should alter your results, ignore something important that happened, or pretend that things turned out differently than they did. <span class="emphasis">Ultimately, you may not prove your hypothesis.</span> But that doesn't mean that your science fair project had no merit!</p>

<p><br />
<span class="subhead-blog"><b>If at First You Don't Succeed</b></span></p>

<p>It happens. Experiments do not always turn out the way you expect or want. Sometimes, it is because something avoidable went wrong. You can learn from that and try again or alter your procedures in the future. Sometimes, it is hard to tell "what" went wrong. Sometimes, the data simply doesn't match up to expectations.</p>

<p>On the bright side, you can learn a lot from what goes wrong with a science project. <span class="emphasis">Scientific discovery, in fact, is often a one-step-forward-two-steps-back process.</span> If you love the area of science you've chosen for your project, spending time troubleshooting what may have happened and finding either a new approach or a revised method for working with the topic can turn into a viable project for your <I>next</I> science fair.</p>

<p>Donna Hardy, an <a href="mailto:/science-fair-projects/ask_an_expert_intro.shtml?from=Blog">Ask an Expert</a> volunteer from Bio-Rad, recently reassured a student and parent that had run into problems with a cabbage cloning experiment, "With science projects, the important thing is the science and the experiment, not necessarily the results. Your son followed the protocol, set up the experiment, and obtained some results. Not necessarily the results he was expecting, but there were results."</p>

<p>Be open, too, to what "what went wrong" suggests. <span class="emphasis">You might find that unexpected results can lead your research or project in an entirely new direction.</span></p>

<p>As Amber Hess, a Science Buddies volunteer and Expert in the <a href="/science-fair-projects/ask_an_expert_intro.shtml?from=Blog">Ask an Expert forums</a> notes: "My best project came about from a mistake I made in a different project. That's also how the microwave oven was invented!" </p>

<p>Indeed, observations that led to the development of the <a href="http://en.wikipedia.org/wiki/Microwave_oven">microwave oven</a> started with an unexpected mess&mdash;a chocolate bar that melted in the pocket of <a href="http://en.wikipedia.org/wiki/Percy_Spencer">Percy Spencer</a>, an American engineer working with magnetrons for Raytheon. The melted chocolate bar demonstrated a side-effect of the magnetrons: their heating properties. Spencer went on to experiment with popcorn and then eggs. <span class="emphasis">It wasn't where he started, but it led to a discovery that changed the face of the modern kitchen!</span></p>

<p>Just imagine if Spencer hadn't realized the potential in re-directing his research based on the melted chocolate bar!</p>

<p>As Sandra notes, "Every scientist, from famous Nobel prize winners to laboratory technicians in their first job, have had an experiment fail. Actually they've had a lot of experiments fail. And that's okay! It is simply part of the process. What differentiates the good scientists from the rest is <I>what they do next</I>. The truly horrible ones make up results, the bad ones simply give up and move to a new question, and the good scientists figure out why the project failed, implement a solution, and try again... and again... and again until it works."</p>

<p></p>

<p><I>Stay tuned for a checklist of ways to get your science project started off on the right foot to give yourself the best chance for success. Check back, also, for more suggestions from our staff scientists and experts regarding what to do... when a project doesn't work and how to troubleshoot what may have gone wrong.</I></p>]]>
        
    </content>
</entry>

<entry>
    <title>You Know, the Whatchamacallit.</title>
    <link rel="alternate" type="text/html" href="http://www.sciencebuddies.org/blog/2010/02/you-know-the-whatchamacallit.php" />
    <id>tag:www.sciencebuddies.org,2010:/blog//1.84</id>

    <published>2010-02-11T18:03:23Z</published>
    <updated>2010-02-11T18:15:42Z</updated>

    <summary>Over time, the words we use to describe principles, tendencies, and objects specific to one field of study or another become commonplace and universal. But those names and labels originated somewhere, often with a single scientist faced with a finding...</summary>
    <author>
        <name>Amy</name>
        
    </author>
    
    <category term="physicsterms" label="physics terms" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="sciencebuddies" label="Science Buddies" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="scienceterms" label="science terms" scheme="http://www.sixapart.com/ns/types#tag" />
    
    <content type="html" xml:lang="en" xml:base="http://www.sciencebuddies.org/blog/">
        <![CDATA[<p>Over time, the words we use to describe principles, tendencies, and objects specific to one field of study or another become commonplace and universal. But those names and labels originated somewhere, often with a single scientist faced with a finding or discovery or problem and the question: What do I call it?</p>

<p>Do you know why a <em>quark </em>is a <em>quark</em>?</p>

<p>This <a href="http://backreaction.blogspot.com/2010/02/why-oh-why-is-psi-called-psi.html">post on the etymology of terms in Physics</a> is a good read and full of interesting trivia. (Plus, you really have to love the great photo of a "Penguin Diagram.")</p>]]>
        
    </content>
</entry>

<entry>
    <title>Familial Fingerprints</title>
    <link rel="alternate" type="text/html" href="http://www.sciencebuddies.org/blog/2010/02/familial-fingerprints.php" />
    <id>tag:www.sciencebuddies.org,2010:/blog//1.83</id>

    <published>2010-02-09T20:35:21Z</published>
    <updated>2010-02-09T20:47:25Z</updated>

    <summary>There are two birthdays coming up in my house, two boys who thought it would be funny to wrap their births (quite symmetrically) right around Valentine&apos;s Day so that the middle of February will always be a conglomeration of treats...</summary>
    <author>
        <name>Amy</name>
        
    </author>
    
        <category term="Science Fair Project Ideas" scheme="http://www.sixapart.com/ns/types#category" />
    
    <category term="dna" label="dna" scheme="http://www.sixapart.com/ns/types#tag" />
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    <category term="fingerprinting" label="fingerprinting" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="genetics" label="genetics" scheme="http://www.sixapart.com/ns/types#tag" />
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    <content type="html" xml:lang="en" xml:base="http://www.sciencebuddies.org/blog/">
        <![CDATA[<p>There are two birthdays coming up in my house, two boys who thought it would be funny to wrap their births (quite symmetrically) right around Valentine's Day so that the middle of February will always be a conglomeration of treats and presents <I>for them</I>. </p>

<div style="float: right; padding: 8px; padding-bottom: 12px;margin-left: 20px; "><br />
<img src="/blog/graphics/2010-fingerprint.jpg" width="150" height="218" alt="Fingerprint; Adapted from Wikipedia / Wilfredor" border="0"></a><br /><br /><br />
</div></p>

<p>Despite the fact that they are siblings, they probably don't think too much (yet) about the ways in which that shows up in their appearance, likes, dislikes, and personalities. That several years separate them is maybe more noticeable to them than the ways in which strands of DNA mark them as unmistakably and indisputably related. </p>

<p>In browsing Project Ideas in the <a href="/science-fair-projects/project_ideas.shtml">Science Buddies' library</a> last week, I ran into a study on fingerprints that I find quite intriguing. <span class="emphasis">We all know that fingerprints are unique.</span> You may not have realized that the development of epidermal ridges that become fingerprints begins between weeks 10 and 24 of gestation. But you most likely know that <span class="emphasis">no two sets of fingerprints are identical</span>. </p>

<p>Similarly, while our fingerprints stretch as we age, <span class="emphasis">they don't "change" in pattern or shape</span>. The individual and permanent nature of fingerprints has, of course, led to them being used as a rapid source of visual identification and even to the exploration of fingerprint readers as a component of various forms of "biosecurity" or "biometric" security systems. (You may have even read science fiction books or mysteries in which biometric systems come into play.)</p>

<p>Because our fingerprints stem from our DNA, there is the possibility that the fingerprints of siblings will exhibit similar patterns when classified according to the three primary categories of fingerprint patterns: loops, arches, and whorls. </p>

<p>The <a href="/science-fair-projects/project_ideas/Genom_p009.shtml?from=Blog">"Are Fingerprint Patterns Inherited?"</a> project idea offers a science fair project based on this premise. The <a href="/science-fair-projects/project_ideas/Genom_p009.shtml?from=Blog">project</a> takes only a few days, so if you are curious about the patterns that can be detected from prints within a family and within classroom settings, grab an ink pad and some paper, and get to work.</p>

<p>While the project calls for a black ink pad, there's no reason you can't have some color-based fun with your prints. <I>(Note: Black ink may make the prints easier to see and study. For a formal science fair project, stick with black.)</I></p>

<ul class="projectideas-list">
<li><a href="http://www.sciencebuddies.org/science-fair-projects/project_ideas/Genom_p009.shtml?from=Blog">Are Fingerprint Patterns Inherited?</a> (<I>Science Buddies' difficulty level: 6</I>)</LI>
</ul>

<p>If you try it out, let us know what you discover! Do you have sets of twins in your family or classroom? Great! That adds an additional twist to the project and to the kinds of results you may see.</p>

<p><br />
<hr> </p>

<p><br />
Interested in other project ideas like this one? Check our <a href="http://www.sciencebuddies.org/science-fair-projects/recommender_interest_area.php?ia=Genom&from=Blog">Genetics and Genomics</a> interest area.<br />
 </p>]]>
        
    </content>
</entry>

<entry>
    <title>Wringing Ringtones</title>
    <link rel="alternate" type="text/html" href="http://www.sciencebuddies.org/blog/2010/02/wringing-ringtones.php" />
    <id>tag:www.sciencebuddies.org,2010:/blog//1.81</id>

    <published>2010-02-05T01:04:45Z</published>
    <updated>2010-02-05T02:16:41Z</updated>

    <summary>Like most of us, I would be lost without my cell phone. It&apos;s not that I talk on the phone all the time. It&apos;s not even that I spend endless time sending texts. Cell phones have just become a seemingly...</summary>
    <author>
        <name>Amy</name>
        
    </author>
    
        <category term="Science Fair Project Ideas" scheme="http://www.sixapart.com/ns/types#category" />
    
    <category term="bitrate" label="bit rate" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="mp3" label="MP3" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="ringtone" label="ring tone" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="ringtone" label="ringtone" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="ringtonecompression" label="ringtone compression" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="ringtonesize" label="ringtone size" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="sciencebuddies" label="Science Buddies" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="sciencefairproject" label="science fair project" scheme="http://www.sixapart.com/ns/types#tag" />
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    <content type="html" xml:lang="en" xml:base="http://www.sciencebuddies.org/blog/">
        <![CDATA[<p>Like most of us, I would be lost without my cell phone. It's not that I talk on the phone all the time. It's not even that I spend endless time sending texts. Cell phones have just become a seemingly indispensible part of our culture. At 3PM, I know that a certain cell phone will start ringing on the schoolyard where we hang out after school. I've got three wake-up alarms set for my mornings, every half hour, each with a different ringtone. I see cell phones on the teachers' desks. Like many of you, I use my phone to Tweet, to <a href="http://www.facebook.com/ScienceBuddies">Facebook</a>, and to snap and share photos.  </p>

<p>While I use the phone all the time, the phone <span class="emphasis">doesn't really ring all that often</span>. When a call does come in, chances are that it's one I need to take... it's someone that needs to reach me. Which brings us to the "ring"... in an age of customization and digitization, <span class="emphasis">ringtones are highly personal things</span>. </p>

<p><br />
<span class="subhead-blog"><b>Your "Cell" Style</b></span></p>

<p>You might have a cool skin for your phone. You might have rubber bumpers for your edges. You might protect your touch screen with a clear overlay. You might have a cool case. You might have custom wallpaper for your display. There are many ways to customize your phone to fit your own personality. </p>

<p>But it goes without saying that your ringtone <span class="emphasis">will be noticed</span>.</p>

<p>(You know what you think when you hear a <span class="emphasis">ho-hum, status quo, oh-so-not-original ringtone</span>, right? One of the canned tones that every user of this or that network seems to have? What ringtone does your mom use? What ringtone does your teacher or colleague use? Have you ever noticed?)</p>

<p><br />
<span class="subhead-blog"><b>Using What you Have</b></span></p>

<p>I've got a pretty big digital music collection, and I spend my share of time on the <a href="http://www.Pandora.com">Pandora</a> and <a href="http://www.itunes.com">iTunes</a> sites setting up playlists, finding new tracks, and otherwise creating the musical backdrop that underwrites my days. Oddly enough, however, I have never spent time searching for (and buying) ringtones. (Okay, I really don't want to <b>buy</b> ringtones even if they do cost less than a bag of chips or a cup of coffee, and I am really not a fan of the thousand-and-one gimmicky feeling ringtone sites.) </p>

<p>When I got my current phone, however, it came with a really small set of canned choices, none of which I liked. Unwilling to settle on any of the ones available, I did some poking around to see if I could use a song I already own as a ringtone for my phone. Bingo!</p>

<p><br />
<span class="subhead-blog"><b>An Online Interface</b></span></p>

<p>While I've got a good bit of experience using Audacity for audio recording, I was happy to find an easy-to-use and efficient online resource for selecting a portion of a song and saving it as an MP3 for use on my phone. A simple enough process: upload the file, find the segment you want, export it as an MP3, download it, email it to your MMS-enabled phone. Voila! </p>

<p>I set up two ringtones, tagging one for general calls and one for work-related calls. Unfortunately, while it was created from a favorite song, not all songs are suited for ringtones. The one I'd set up as my "work-related" ringtone simply wasn't loud enough to be heard over the general buzz of the day. Repeatedly, I missed calls simply because I didn't hear the phone ring, even with the volume all the way up. </p>

<p>This week, I decided I'd missed one call too many calls, and so I took a few minutes and headed back out to create something louder, something likeable but impossible to miss, something I could live with. In my library, I found the perfect upbeat tune, something those of you with an affinity for <I>Shrek</I> would immediately recognize. </p>

<p>I had the perfect song, and yet as I went through the steps for converting the file, I ran into the one "gotcha" that comes into play when you make your own ringtones. </p>

<p>Size matters.</p>

<p><br />
<span class="subhead-blog"><b>How Small Can You Go?</b></span></p>

<p>Each phone will have a different size limitation for ringtones. (To find out yours, check your user's manual or do an online search for the "maximum ringtone size" for your phone.) You might, for example, find that your phone can only use a ringtone that is less than 200K. To put that in perspective, <span class="emphasis">a single minute of a CD-quality song is approximately 10 megabytes (MB)! </span></p>

<p>In practical terms, this means you have to choose between quality and quantity. You might be able to get a few more seconds of ringtone in at a lower quality. But, <span class="emphasis">what kind of variation in quality will you see as you lower the bitrate (Kbit/sec)</span>? The slider on the application I used goes all the way from a high of 320 Kbit/sec to a low of 32 Kbit/sec. That's obviously a <span class="emphasis">huge range</span>. As you might expect, where your ringtone falls in that range can have a dramatic impact on the <span class="emphasis">quality of sound</span>. </p>

<p><br />
<span class="subhead-blog"><b>The Science of Compression</b></span></p>

<p>There's a great short-term project in the Science Buddies' library of Project Ideas that can help reveal the ways in which compression, MP3 algorithms, and bitrate come into play. How low is too low? Does the threshold change depending on the type or genre of song? Can you get by with something even lower for a ringtone? </p>

<p>To get started sampling your own tracks, mixing your own ringtones, and finding your own levels of acceptable degradation, take a look at this project:</p>

<ul class="projectideaslist">
<lI><a href="/science-fair-projects/project_ideas/Music_p025.shtml?from=Blog">MP3 Squeeze: How Much Compression is Too Much?</a> (<I>Science Buddies' difficulty level: 6</I>)</LI>
</ul>

<p><br />
<span class="subhead-blog"><b>Favorite Sound</b></span></p>

<p>What's your favorite ringtone ever? Head over to <a href="http://www.facebook.com/ScienceBuddies">Facebook </a>and let me know, or leave a comment here.</p>

<p></p>

<p></p>

<p><br />
</p>]]>
        
    </content>
</entry>

<entry>
    <title>Going for the Gold: The Science of Winter Sports</title>
    <link rel="alternate" type="text/html" href="http://www.sciencebuddies.org/blog/2010/02/going-for-the-gold-the-science-of-winter-sports.php" />
    <id>tag:www.sciencebuddies.org,2010:/blog//1.78</id>

    <published>2010-02-02T01:08:47Z</published>
    <updated>2010-02-02T01:46:50Z</updated>

    <summary> The 2010 Winter Olympics will be held in Vancouver February 12-28. With a list of sporting events that includes Alpine Skiing, Bobsleigh, Figure Skating, Freestyle Skiing, Ice Hockey, Luge, Skeleton, Ski Jumping, Snowboard, and Speed Skating, you know the...</summary>
    <author>
        <name>Amy</name>
        
    </author>
    
        <category term="Science Fair Project Ideas" scheme="http://www.sixapart.com/ns/types#category" />
    
    <category term="balance" label="balance" scheme="http://www.sixapart.com/ns/types#tag" />
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    <category term="wintersports" label="winter sports" scheme="http://www.sixapart.com/ns/types#tag" />
    
    <content type="html" xml:lang="en" xml:base="http://www.sciencebuddies.org/blog/">
        <![CDATA[<p><!-- Going for the Gold: The Science of Winter Sports --><br />
<div style="float: right; padding: 8px; padding-bottom: 12px;margin-left: 20px; "><br />
<img src="/blog/graphics/2010-skating-luge-Canfield_skeleton.jpg" width="252" height="288" alt="Skeleton photo; Wikipedia public domain" border="0"></a><br /><br /><br />
</div></p>

<p>The <a href="http://www.vancouver2010.com/">2010 Winter Olympics</a> will be held in Vancouver February 12-28. With a list of sporting events that includes <span class="emphasis" style="color: black">Alpine Skiing</span>, <span class="emphasis" style="color: black">Bobsleigh</span>, <span class="emphasis" style="color: black">Figure Skating</span>, <span class="emphasis" style="color: black">Freestyle Skiing</span>, <span class="emphasis" style="color: black">Ice Hockey</span>, <span class="emphasis" style="color: black">Luge</span>, <span class="emphasis" style="color: black">Skeleton</span>, <span class="emphasis" style="color: black">Ski Jumping</span>, <span class="emphasis" style="color: black">Snowboard</span>, and <span class="emphasis" style="color: black">Speed Skating</span>, you know the snow and ice will be flying as athletes dazzle audiences and <span class="emphasis" >challenge the laws of physics</span> with various rotations, jumps, loops, spins, twists, and turns. </p>

<p>Even from the couch, I can't pinpoint a perfect <span class="emphasis">triple lutz</span> a crisp <span class="emphasis">Alley Oop</span> or a flawless <span class="emphasis">Backside 720</span>. And the thought of hurtling down the <span class="emphasis">Whistler track</span> at  speeds nearing 135 km/m <span class="emphasis">on my stomach</span> (skeleton) or <span class="emphasis">on my back</span> (luge) or hunkered down in a bobsleigh makes my head spin. This doesn't mean, of course, that I can't marvel at successfully landed moves and groan with the rest of the viewing audience when something goes wrong. </p>

<p>I'll be watching. And in between events, I'll be thinking a bit about sports science, about <span class="emphasis" style="color: black">balance</span> and <span class="emphasis" style="color: black">dizziness</span> and <span class="emphasis" style="color: black">equilibrium</span>, about <span class="emphasis" style="color: black">speed</span> and <span class="emphasis" style="color: black">wind</span> and <span class="emphasis" style="color: black">friction</span>, and about the many ways in which differences in <span class="emphasis" style="color: black">equipment</span> can be a determining factor. </p>

<p><span class="subhead-blog"><b>A Balancing Act</b></span></p>

<p>While success in many winter sports boils down to gathering and maintaining and not disrupting accumulated "speed," many of these sports also require a <span class="emphasis" style="color: black">good grip on balance</span>. Torquing too far one way or another can send even the most seasoned athlete tumbling. For a look at what's going on, check out these Science Buddies science project ideas:</p>

<ul class="projectideaslist">
<LI><a href="/science-fair-projects/project_ideas/HumBio_p012.shtml?from=Blog">Twirls, Whirls, Spins, & Turns: The Science & Reflexes of Dizziness</a> (Science Buddies' difficulty level: 6-8</I>)</LI>
<LI><a href="/science-fair-projects/project_ideas/Sports_p019.shtml?from=Blog">Tightening the Turns in Speed Skating: Lessons in Centripetal Force & Balance</a> (Science Buddies' difficulty level: 7-8</I>)</LI>
<LI><a href="/science-fair-projects/project_ideas/Sports_p017.shtml?from=Blog"> Balancing Act: Finding Your Center of Gravity</A>(Science Buddies' difficulty level: 6-8</I>)</LI>
</ul>

<p><br />
<span class="subhead-blog"><b>A Wheel in Motion...</B></span></p>

<p>Dive a bit deeper into issues that effect speed and accuracy in these project ideas:</p>

<ul class="projectideaslist">
<LI><a href="/science-fair-projects/project_ideas/ApMech_p022.shtml?from=Blog">Slippery Slopes and Sticking Surfaces: Explore the Forces of Friction</a> (Science Buddies' difficulty level: 6-8</I>)</LI>

<p><LI><a href="/science-fair-projects/project_ideas/Sports_p048.shtml?from=Blog">Speed Quest</a> (Science Buddies' difficulty level: 4</I>)</LI></p>

<p><LI><a href="/science-fair-projects/project_ideas/Sports_p049.shtml?from=Blog">She Shoots, She Scores! How Does Hockey Stick Flex Affect Accuracy and Speed? </a> (Science Buddies' difficulty level: 5-6</I>)</LI><br />
</ul></p>

<p><span class="subhead-blog"><B>On and Off the Ice</B></span></p>

<p>The following abbreviated project ideas offer concepts related to winter sports that can be expanded and crafted to create a unique and individual science fair project or study. As the Olympic games get underway, spending time as a class or group talking about the kinds of questions raised in these project ideas encourages creative and scientific collaborative thinking and problem-solving.</p>

<ul class="projectideaslist">
<LI><a href="/science-fair-projects/project_ideas/Sports_p043.shtml?from=Blog">How Fast Can You Shoot a Hockey Puck?*</a> (Science Buddies' difficulty level: 5</I>)</LI>
<LI><a href="/science-fair-projects/project_ideas/Aero_p025.shtml ?from=Blog">Aerodynamics and Ice Hockey*</a> (Science Buddies' difficulty level: 7-8</I>)</LI>
<LI><a href="/science-fair-projects/project_ideas/Sports_p042.shtml?from=Blog">Skiing and Friction: How Does Ski Wax Affect the Sliding Friction of Skis?* </a> (Science Buddies' difficulty level: 6-8</I>)</LI>
<LI><a href="/science-fair-projects/project_ideas/Sports_p041.shtml?from=Blog">Skating and Angular Momentum*</a> (Science Buddies' difficulty level: 8</I>)</LI>
</UL>

<hr noshade />

<p><P> For other sports-related project ideas, visit our <a href="/science-fair-projects/recommender_interest_area.php?ia=Sports">Sports Science section</a>.</P></p>]]>
        
    </content>
</entry>

<entry>
    <title>Scientist&apos;s Pick: Smart Slime</title>
    <link rel="alternate" type="text/html" href="http://www.sciencebuddies.org/blog/2010/01/scientists-pick-smart-slime.php" />
    <id>tag:www.sciencebuddies.org,2010:/blog//1.79</id>

    <published>2010-01-29T23:31:18Z</published>
    <updated>2010-01-29T23:37:24Z</updated>

    <summary>Note: This month&apos;s &quot;Scientist&apos;s Pick&quot; is from Science Buddies&apos; staff scientist, David Whyte. David presented this project to the Science Buddies&apos; team last fall. It&apos;s very cool! ~ Science Buddies&apos; Editorial Staff Project: Smarter Than Your Average Slime: Maze-solving by...</summary>
    <author>
        <name>Staff Scientist</name>
        
    </author>
    
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        <category term="Scientist&apos;s Pick" scheme="http://www.sixapart.com/ns/types#category" />
    
    <category term="amoeboidorganism" label="amoeboid organism" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="physarum" label="physarum" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="physarumintelligence" label="physarum intelligence" scheme="http://www.sixapart.com/ns/types#tag" />
    <category term="physarummaze" label="physarum maze" scheme="http://www.sixapart.com/ns/types#tag" />
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    <content type="html" xml:lang="en" xml:base="http://www.sciencebuddies.org/blog/">
        <![CDATA[<p><I>Note: This month's "Scientist's Pick" is from Science Buddies' staff scientist, David Whyte. David presented this project to the Science Buddies' team last fall. It's very cool!  ~ Science Buddies' Editorial Staff</I></p>

<p><strong>Project:</strong> <a href="/science-fair-projects/project_ideas/Zoo_p060.shtml?from=Blog"> Smarter Than Your Average Slime: Maze-solving by an Amoeboid Organism</a><br />
<strong>Scientist:</strong> David Whyte<br />
<strong>Science Buddies' Difficulty Level:</strong> <a href="/science-fair-projects/project_ideas/help_project_difficulty.shtml?from=Blog">7-9</a></p>

<blockquote>
I was doing some background research on simple organisms that might be used in science projects when I came across an article entitled "Maze-solving by an amoeboid organism." The article contained just what I had been looking for&mdash;the basis for a novel project that was both cutting-edge science and also well within the reach of the kitchen scientist. 

<p><br />
<div style="float: right; width: 150px; border-style: double; border-color: black; border-width: thin; padding: 20px; margin: 20px;" class="bgcolor-blog bodytext"><br />
<p><span style="font-size: 150%; color: black;">Materials Tip!</span></p></p>

<p>Kits for growing the organism, Physarum polycephalum, can be purchased from several science supply stores online.<br />
</span><br />
</div></p>

<p>The basic finding of the research presented in the article was that <span class="emphasis">Physarum</span>, a common inhabitant of wooded areas around the world, <span class="emphasis">can find the shortest path through a maze set up on an agar plate</span>. Physarum, also called <span class="emphasis">slime mold</span>, typically forms a large amoeba-like mass that moves over dead leaves and rotting logs looking for organic matter to consume. </p>

<p>Announcing their findings in the journal <I>Nature</I>, the researchers said they believe the organism changed its shape to maximize its foraging efficiency and therefore its chances of survival. They went on to claim that "This remarkable process of cellular computation implies that cellular materials can show a primitive intelligence."</p>

<p>In the lab, Physarum can be grown in Petri dishes that have a layer of agar on the bottom, so I decided to put Physarum to the test at home.</p>

<p><b>Conducting the Experiment</b></p>

<p>To set up the experiment, I placed pieces of slime mold in a 30-square-centimeter (five-square-inch) maze on an agar plate. On that same plate, I strategically placed a food source at two spots in the maze. </p>

<p><b>What happened?</b></p>

<p>The pieces of slime mold coalesced, and the organism condensed its entire body to form a mass that stretched between the two food sources and connected them. In each trial, the slime mold showed its <span class="emphasis">ability to both solve the maze and find the food</span>. Each time, it adopted the <span class="emphasis">shortest possible route</span>, effectively solving the puzzle.<br />
 <br />
The project idea I created for Science Buddies lets you devise your own maze to see for yourself how the slime mold behaves. You'll have to decide for yourself&mdash;is the slime mold "intelligent"? Are there limits to its intelligence? </p>

<p>Other questions you might ask as you work with the Physarum include:<br />
<ul><br />
<li>What environmental cues is it using and how does it process information in ways that allow it to adapt? </li></p>

<p><li>What other tests can be devised to further explore how these remarkable creatures respond to the world as their senses experience it? </li><br />
</ul></p>

<p>For me, any project that involves <span class="emphasis">"cellular computation"</span> and <span class="emphasis">"primitive intelligence"</span> in an amoeboid organism has lots of potential. In this project, what I discovered is that Physarum is a simple organism - one that you can experiment with at home&mdash;but it is not really so <span class="emphasis">"simple"</span> after all.</p>

<p>David</P></p>

</blockquote>

<hr noshade />

<p><P> If this project sounds like fun, you might want to explore other Project Ideas in our <a href="/science-fair-projects/recommender_interest_area.php?ia=Zoo">Zoology section</a>.</P></p>]]>
        
    </content>
</entry>

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