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Discover why the sky is blue and the sunset is red. When sunlight travels through the atmosphere, blue light scatters more than the other colors, leaving a dominant yellow-orange hue to the ...

Polarizing sunglasses cut road glare better in some positions than in others. When light reflects from water, asphalt, or other nonmetallic surfaces, it becomes polarized—that is, the reflected light ...

You have two eyes, yet you see only one image of your environment. If your eyes receive conflicting information, what does your brain do? Roll the sheet of paper lengthwise into a tube 11 inches (28 ...

Listen to a beam of light. Audio signals can be carried by radio waves or as electrical pulses in wires. Other forms of electromagnetic radiation, such as visible light, can also carry audio signals.

Hone your electrostatic levitation skills and fly some tinsel. Next time you’re in the vicinity of a Christmas tree, impress your friends and family with a little levitation. By experimenting with ...

Polarized light passing through sugar water reveals beautiful colors. White light is made up of all the colors in the rainbow. When polarized white light passes through a sugar solution, each color’s ...

Make a lens and a magnifying glass by filling a bowl with water. A round bowl of water can act as both a magnifier and a lens. Place the lightbulb or candle more than 1 foot (30 cm) from the ...

Soap bubbles float on a cushion of carbon dioxide gas. This beautiful investigation illustrates the principles of buoyancy and semipermeability. Tools and Materials Dry ice Clear plastic container ...

Magnetic-field lines pass through cardboard, air, and certain other materials, depending on whether they're permeable or nonpermeable. Test different materials to see which gather magnetic lines of ...

This Snack models ground failure in a phenomenon called liquefaction. See what happens when you shake up structures, loose sediments, and water in a simulated earthquake. Pour sand and water together ...

Tired of having unpopped kernels at the bottom of your pot of popcorn? Just take a minute to make sure everything’s heated. Choose a pot large enough to hold the desired amount of popped popcorn.