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Others Like “Rock On! Recording Digital Data with Magnets”

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Science Fair Project Idea
This is a challenging first computer science project. You'll learn the basics of how digital devices can represent numbers using only 0's and 1's, and you'll write a JavaScript program to convert numbers between binary, decimal and hexadecimal notation. Read more
CompSci_p005
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Time Required Short (2-5 days)
Prerequisites You should be able to:
  1. write a basic HTML file with a text editing program (like Notepad);
  2. create HTML [[ SourceCode []<FORM>[] SourceCode ]] elements for user input;
  3. write basic JavaScript functions using [[ SourceCode []Arrays[] SourceCode ]], [[ SourceCode []Strings[] SourceCode ]] and simple flow control statements (e.g., [[ SourceCode []if...else[] SourceCode ]], and [[ SourceCode []for[] SourceCode ]] or [[ SourceCode []while[] SourceCode ]] loops).
Help is available for each of these topics. See the Introduction section for details.
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
Today magnetic recording is used in audio and video cassette recorders, and computer disk drives. Did you know that you can also use an electromagnet to record and play back from a steel wire? In fact, this is how magnetic recording got started. This project shows you how to build a simple wire recorder. Read more
Elec_p015
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Time Required Long (2-4 weeks)
Prerequisites None
Material Availability Specialty items
Cost Average ($50 - $100)
Safety Eye protection required during construction
Science Fair Project Idea
This is a good first-time programming project. You'll learn how to use JavaScript to create a simple program to alphabetize lists of words. You'll be able to run your program in your Web browser. Read more
CompSci_p002
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Time Required Short (2-5 days)
Prerequisites Familiarity with Web browser and text editing programs
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
You have probably read all about forms of alternative energy like solar and wind power. But what about human power? With the aid of a coil of wire and some magnets, you can generate electricity with nothing more than a flick of your wrist. In this project, you will build a small hand-powered electrical generator that can power a series of tiny lights. Get ready to save the planet and get some exercise at the same time! Read more
Energy_p009
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Time Required Average (6-10 days)
Prerequisites None
Material Availability This science project requires some specialty electronic components. A kit is available from the . The Time Required estimate includes time for gathering specialty materials. The actual project only takes 1 day.
Cost Average ($40 - $80)
Safety

Neodymium magnets are very strong and can pinch your fingers when they come together. You should keep them away from pets and small children because they can cause serious harm if ingested. As with any magnet, you should keep them away from computers, cell phones, and credit cards.

Adult supervision is required when using a hobby knife.

Science Fair Project Idea
Have you ever been in an earthquake? What did it feel like? Did you jiggle back and forth? Up and down? Was there a jolt? Or a rolling motion? Come build a house Hansel and Gretel would love to eat, a special table to shake it on, and see how different soil types can amplify shaking. Read more
CE_p023
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety Children who are allergic to peanuts should substitute a safe alternative for the peanut butter.
Science Fair Project Idea
Have you ever felt really frustrated? Maybe you were playing a video game and could not easily figure out a particularly challenging puzzle. Or maybe there was something you really wanted but you could not have it for some reason. However it has happened, what do you do when you get frustrated? What about other people — what kind of behaviors have you seen others display when they get frustrated? Do they cry, jump up and down screaming, just give up, or become aggressive? In this human… Read more
HumBeh_p051
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Time Required Very Long (1+ months)
Prerequisites You must have access to at least 30 middle-school aged test subjects. Try to get an even mix of boys and girls. You must also have access to a video camera.
Material Availability Specialty equipment is required. See the Materials and Equipment list for specific details.
Cost Average ($50 - $100)
Safety Wear safety goggles when hammering the nails into the piece of wood and when using the drill.
Science Fair Project Idea
This science project presents an interesting puzzle. A disk of wood will float face-up; that is, with its circular cross-section parallel to the surface of the water. A long log of wood, however, floats on its side with the circular cross-section perpendicular to the surface of the water. If you think about it, disks and logs are both cylinders. Is there some intermediate length of cylinder that floats with the circular cross-section at a tilted angle? Try this experiment to find out! Read more
Aero_p021
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Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety Adult supervision is recommended when using the wood saw. Always wear safety goggles when working with tools.
Science Fair Project Idea
Have you ever seen a "Hail Mary" football pass, where the quarterback tries to throw the ball as far as possible to reach the end zone and score a touchdown? Or a last second game tying soccer goal from midfield? How far the ball will go does not just depend on how hard a player throws or kicks it; it also depends on the angle at which the player launches the ball. In this sports science project, you will investigate how launch angle affects the distance that a ball travels by filming… Read more
Sports_p036
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Time Required Average (6-10 days)
Prerequisites None
Material Availability This science project requires a computer with internet access and a digital video camera with a tripod. See the Materials and Equipment list for details.
Cost Low ($20 - $50)
Safety Be sure to do this science project in an open area like an empty football field, where you will not hit people or buildings with the ball.
Science Fair Project Idea
What is your favorite font? Is it Chalkboard, Comic Sans, Futura, or Curlz? Whatever your favorite font is, you can test it out with this fun science project. Read more
CompSci_p013
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Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability This science project requires a PC with Microsoft Word or another word processing program that allows fonts to be embedded in text files.
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
Have you ever wondered how a ship made of steel can float? Or better yet, how can a steel ship carry a heavy load without sinking? In this science project you will make little "boats" out of aluminum foil to investigate how their size and shape affects much weight they can carry and how this relates to the density of water. Read more
Aero_p020
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
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