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Insolation — Geography STD 9 — Question

ICSE BoardEnglish MediumSTD 9GeographyInsolation4 Marks
Question
Insolation and Terrestrial Radiation.
✓

Answer

Insolation :
  1. It is the incoming solar radiation intercepted by the earth.
  2. It travels in short waves.
  3. Insolation involves only 51 units out of 100 units of solar radiation.
Terrestrial Radiation :
  1. It is the earth’s radiation given back to the atmosphere and space.
  2. It travels in long waves.
  3. Out of 51 units of insolation 34 units are transferred to the atmosphere and 17 units go back to space

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