Chapter 12 - Using Energy
There's a good reason why your summer attire is lighter and brighter than your winter wardrobe. This easy experiment illustrates the power of albedo in black and white.
Particles and waves, reflection and refraction—how enlightened are you about the subject of light? Find out with Light Quest!, a kid-friendly trivia game.
What could Galileo see when he looked through his telescope? Build a refracting telescope with lenses similar to the ones he used, and see the answer for yourself.
White light is a mixture of all colors of visible light, but it doesn't always include every color of the rainbow. Build a spectroscope, and view the spectral fingerprints of different light sources.
Did you know that when you look at a star, your eyes are capturing light that traveled all the way from the star to your eye? Learn more about how light carries information from distant objects.
From any place on Earth, a compass will always point north. But do you know why? Explore the inner workings of this tiny magnet by building one—and then testing it in your neighborhood.
Young Naturalist Awards Essay
This 10th-grader from New York first became fascinated with bats when she observed their "magical movements" in Israel's Negev Desert as a young child. Trek with her to Ontario to study their behavioral ecology.
Light always travels in straight lines—that is, unless it bends or bounces off an object's surface. Take an enlightening look at light with these three easy experiments.
You can't see the Sun's ultraviolet rays with your eyes—you just see their results on your freckled, tanned, or sunburned skin. Build a bracelet that immediately detects these invisible rays.