Physics is the study of matter — what is it made of? How does it behave? What laws or equations describe it? From subatomic particles, to the Big Bang, modern physicists study matter at a tremendous range of scales. There's a whole lot of interesting physics at the human scale, too.

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Did you know that you can use solar power to cook food? This can be done using a solar oven, which is a low-cost, ecologically-friendly technology that seems to have everything going for it. This video will show you how to build your very own simple solar oven out of a pizza box to gather the Sun's rays and cook a tasty treat for you! Written instructions are available on our website at https://www.sciencebuddies.org/stem-activities/solar-oven?from=YouTube. Science Buddies also hosts a library…
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What is the longest straw that you have ever used to drink from? Most straws that you can buy are approximately the same length. Why is that so? There is actually a limit of how long a vertical straw can be. If it gets too high above the glass it won't work anymore. This video will show you how to build and test a really long straw. How long can you make yours? Written instructions are available on our website at https://www.sciencebuddies.org/stem-activities/long-straw?from=YouTube. Science…
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Have you ever wondered what makes a paper plane fly? Some paper planes clearly fly better than others. But why is this? In this activity, you will explore how changing the forces that act on a plane will affect its flight. So, get ready to start folding! Written instructions are available on our website at https://www.sciencebuddies.org/stem-activities/paper-airplanes-aerodynamics?from=YouTube. Science Buddies also hosts a library of instructions for over 1,000 other hands-on science projects,…
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Free science fair projects.