Question: State the factor that determines the amount of insolation that the surface of the earth receives?
Insolation is the amount of solar radiation that reaches the surface of the earth. It is an important factor that influences the climate and weather patterns of different regions. But what determines how much insolation the earth receives? The answer is mainly the angle of incidence, which is the angle between the incoming solar rays and the normal to the surface. The higher the angle of incidence, the more concentrated the solar energy is on a given area, and the higher the insolation. Conversely, the lower the angle of incidence, the more spread out the solar energy is on a larger area, and the lower the insolation. The angle of incidence depends on three factors: the latitude of the location, the season of the year, and the time of day. Let's look at each of these factors in more detail.
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