At which latitude does heat gain through insolation approximately equal heat loss through terrestrial radiation?
Correct answer: B. 40° North and South
- A. 22 1/2° North and South
- B. 40° North and South
- C. 42 1/2° North and South
- D. 66° North and South
Explanation
Earth does not receive equal radiation at all points. The East-West rotation of the earth provides equal exposure to sunlight but latitude and dispersion do affect the amount of radiation received. The poles receive far less radiation than the equator. This uneven heating is called differential insolation. At 40º North and South, approximately the heat gain is equal to heat loss through terrestrial radiation.
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