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How to use  engineering design skills to make and build a kite

While testing out the kite designs kids will learn about how lift and air pressure work together to make things fly! Kites have been constructed and flown for thousands of years. They have been used for fun, for military exercises, and for scientific purposes. You may know that Benjamin Franklin used a kite to show …

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Charles law

This is a modern version of a classic experiment by Jacques Charles (who was also interested in flying balloons). Charles studied the volume of a sample of air—sealed in a glass tube with a U-shaped curve—as he systematically changed the temperature by immersing the tube in a water bath. The air was trapped by a …

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Homemade Thermometers

Clear plastic drinking straw, preferably a 0.2 inch diameter straw. Metric ruler Fine-tipped permanent marker Clean narrow-necked, small bottle with lid. Travel size bottles like these available from Amazon work well. Washed empty food coloring or vanilla extract bottles work well too. Rubbing alcohol A few drops or red, blue, or green food coloring. Liquid food coloring …

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Static electricity

Static electricity is the accumulation of electrical charges on a surface, produced by the contact and separation of dissimilar materials. If you have ever received a shock when touching a doorknob, you have some firsthand experience with static electricity. The sparks created by static electricity can cause real problems, such as when they “fry” an electronic …

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