Monday, March 18, 2013

Greenhouse effect

TheBrickAvenger teaches us about the Greenhouse effect. Light energy from the sun (in yellow) hits the earth, warming it. The earth then radiates heat (red arrows), but rather than directly escaping into space, a good portion of this heat energy coming up from the earth is absorbed by gases such as CO2 in the atmosphere. These gases then radiate energy - some up into space, but other energy back down towards the earth.

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