Black body radiation

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6 Terms

1
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A perfect black body…

Absorbs all the radiation incident on it. None is reflected or transmitted.

2
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A perfect black body is the __ emitter of radiation

Best possible.

This is because, since all objects with a constant temperature emit radiation the same as it absorbs, and black bodies absorb all radiation, they emit a lot aswell.

3
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What factors of radiation depend on the temperature of the object?

  • Wavelength

  • Intensity

4
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Earth absorbs radiation from…

The sun.

5
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Some of the sun’s radiation is reflected off the earth by what?

Clouds

6
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What happens when the earth absorbs the sun’s radiation?

The temperature of the earth increases and the earth emits radiation back into space.