What is 'Insolation' and how does it primarily affect the Earth's temperature?
Options
Insolation is the amount of rainfall received by a region, directly proportional to its temperature.
Insolation is the incoming solar energy intercepted by the Earth, and it is the main source of heat, thus affecting temperature.
Insolation refers to the reflection of sunlight by clouds, which cools the Earth's surface.
Insolation is the heat released by the Earth's interior, causing volcanic activity and warming the atmosphere.
Explanation
Insolation stands for INcoming SOLar radiATION, which is the amount of solar energy that reaches the Earth's surface. This solar energy is the primary source of heat for our planet, directly influencing the Earth's temperature and, consequently, its weather and climate. Options 1, 3, and 4 describe unrelated or incorrect concepts. Rainfall is precipitation, reflection is a process involving insolation but not insolation itself, and heat from the Earth's interior is geothermal, not solar.