Wednesday, November 9, 2011

Does the Earth's distance from the Sun play any role in the seasons?

I've noticed that the Northern Hemisphere's summer occurs when the Earth is at or near the aphelion (furthest) distance from the Sun, but the Southern Hemisphere's summer occurs when the Earth is at or near the perihelion (closest) distance from the Sun. We learned in cl that the Earth's orientation on its axis is what causes the seasons, and I fully understand that. But does the Earth's orbital distance have any effect? I.e. is the Southern Hemisphere's summer warmer since they are at a closer distance to the Sun than the Northern Hemisphere is during their summer?

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