| Not all colors are created equal. Investigate how color can influence absorbing and radiating energy. |
• Observe how surface color affects rate of energy absorption by an object |
| • Observe how surface color affects rate of energy radiation from an object |
Light and heat - where would we be without them? Not alive on our wonderful earth, that's for certain. We've all seen pictures of the Earth's surface taken from an airplane that show the many types of features - water, ice, rocks, sand, soil and plants - that cover its surface. But do all these objects absorb incoming solar radiation equally? Once heated by the sun, do they all give off heat energy equally?
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Find out with these two differently colored cans in our low-cost Radiation Can Kit. All you'll need are thermometers and a lamp to provide a source of heat.
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How to use:
Exploring radiation and absorption.
1. Place black and silver containers near each other with thermometers inserted in each.
2. Angle a lamp so the light points directly at the sides of both containers.
3. Read off temperatures of each, with the light on, then off. Observe and record 10 minutes. |
