the light strikes perpendicularly, light energy is concentrated, but when the surface istipped, keeping at the same distance, incident light is more spread out. Can you see thatthe same energy over a larger area is akin to the low temperatures of the Arctic and Ant-arctic regions of Earth?The sketch is of Earth with parallel rays of light coming from the Sun. Count thenumber of rays that strike region A and equal-area region B. Where is the energy perunit area less? How does this relate to climate?PRACTICING PHYSICSABF I G U R E 1 6 . 2 6A simple and effective use of solarpower.F I G U R E 1 6 . 2 7A Thermos bottle.
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