Thursday 14 July 2016

Does Earth's Rotation / Speed ever Slow Down/Speed Up? What Are the Causes and Effects?

Yes!  Earths Rotation does increase in terms of its speed.  If You think about centrifugal force, and the fact that Earth rotates in an elipse, it becomes clear that Earth is farther from the sun as it makes its way around our parent star.  In other words, when Earth is nearer the sun, it travels faster because the Suns gravitational pull on the Earth is stronger.  Also, when Earth is farther, it travels slower.  The cause is gravity, and the effect is variations in tidal forces on Earth.

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