Second Grade Science Experiments (Page 185)

Memory Science: Weekly Science Project Idea and Home Science Activity Spotlight

Blog Post

In this week's spotlight: a human behavior science project and family activity that explores memory and how using a mnemonic device can help you remember a string of words or the items in a list. Have you ever used the HOMES acronym to help you remember the names of the Great Lakes or ROYGBIV (or Roy G. Biv) to remember the order of the seven colors in a rainbow? In this science project, you conduct a controlled experiment to see whether or not a mnemonic device makes a difference in… Read more

Memory Surprises

STEM Activity

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Have you ever wondered why some things are easy to recall, while others need hours of study? For example, you might be able to recollect what happened at your birthday party without any practice, but you need hours of study before you can recite a few lines for a theater play. Our mind stores and remembers information in fascinating ways. Remember to do this activity and you will be surprised at what your memory can do for you! Read more

Meteor Science: Weekly Science Project Idea and Home Science Activity Spotlight

Blog Post

In this week's spotlight: a pair of astronomy science projects perfectly timed for this year's peak Perseids meteor shower activity. Most meteors that pass through the Earth's atmosphere burn up before they hit the ground. But what happens when a meteorite hits? In this pair of hands-on science activities, students and families experiment to find out how the size of a meteorite is related to the size of the resulting crater. Craters and Meteorites (full Science Buddies Project… Read more

Mission to Mars: Summer of STEM (Week 9)

Blog Post

Join Science Buddies this summer for virtual summer camp! Each week, we'll have a fun STEM theme for kids of all ages, suggestions for simple hands-on activities, book picks, and more. With our Summer of STEM, we'll keep you and your kids inspired all summer with creative and innovative science and engineering activities — for free. This week: go on a Mission to Mars with space-themed science! A Mission to Mars with Space Science On NASA's… Read more

Mix It Up: Transferring Heat by Convection in a Tank

Science Fair Project Idea

Scientific Method

Big, puffy, cotton-like clouds, and the bubbles in a pot of boiling water may not seem like they have much in common, but they do—both are formed by a heat-transfer process called convection. Warmed gases and liquids rise, while cooler ones fall, creating currents and mixing things up. Whether making processed foods in a factory or making plastic or metal parts, knowing how to mix up a big tank of hot and cold liquids or gases quickly is important. Engineers must rely on experimentation… Read more

M&M Math: Weekly Science Project Idea/Home Science Activity Spotlight

Blog Post

In this week's spotlight: a pair of projects that put statistics in the palm of your hands. In these hands-on math projects and activities, students investigate to find out how often each color of M&M appears in a bag or group of bags. Have a guess as to which color appears most often? Put your guess to the test! What is the likelihood of pulling a yellow M&M from a brand new bag? After this activity, your student will be able to give you the odds—with some statistics to back them up!… Read more

Model How R naught (R₀) Shapes an Epidemic

Science Fair Project Idea

Scientific Method

Even during a global pandemic like COVID-19, there are differences in how the epidemic unfolds within communities. Some communities see early, large waves of infected individuals, while others see smaller numbers of infections over a longer period of time, and others may not appear to have an epidemic at all. Could R₀ (pronounced R naught), account for some of this variation? R₀, the basic reproduction number of a disease, quantifies how many people, on average, an infected… Read more

Modeling the Human Cardiovascular System: The Factors That Affect Blood Flow Rate

Science Fair Project Idea

Scientific Method

People often call cardiovascular disease a "silent killer." This disease sneaks up and causes damage, but patients don't realize it—until serious symptoms start. That is why physicians recommend keeping your cardiovascular system healthy. A healthy cardiovascular system gives us the energy and the stamina to do all of the things that we want to accomplish, such as do our best in school and perform well in sports. But what makes a cardiovascular system unhealthy, and what are the… Read more

Molecular Scissors

Science Fair Project Idea

Scientific Method

Ever used a pair of molecular scissors? Restriction enzymes are molecular scissors that cut DNA into pieces. Find out which enzymes will cut, and where by making a restriction map. Then you can figure out what will happen if you change the sequence of the DNA. Will the same enzymes still cut the new DNA sequence? Read more

Money Problems

Science Fair Project Idea

Scientific Method

Math can make you money! If you understand some basic math, you can make good decisions about how to keep, spend, and use your hard earned dollars. Try an experiment comparing the same balance in different types of bank accounts. How much better is a savings account than a checking account? What difference does the interest rate make? Which is better, an account that earns compound or simple interest? Can you compare the short and long term costs of borrowing money compared to saving the cash… Read more

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