What If The Earth Stopped Spinning? - ScienceFACTionShow
Have you ever wondered why boogers form in your nose? Where do they come from and why won't they go away? Well Mark breaks down everything you need to know about SNOT in today's video.
PRODUCER: Matt @ Question Time
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Because the earth is locked in a gravitational rotation around the sun - nothing short of a huge meteor slamming into the earth could knock it off course (and then we'd all be dead anyway). The whole solar system functions the same way. Even the milky way galaxy rotates on a much slower scale.
The Earth is not a perfect sphere. Due to it's rotation, the Earth (like all rotating planets) has a slightly distorted shape. The rotational momentum tends to force the matter to bunch up in the middle. In the case of the Earth, this "middle" is the equator.
The true shape of the Earth called an Oblate Spheroid. The term "Oblate" refers to it's slightly oblong appearance. The term "Spheroid" means that it is almost a sphere, but not quite. One of the most important things to remember about the Earth's shape is that it is only very slightly oblate. The diameter from the North Pole to the South Pole (the shortest diameter) is approximately 12,714 km. The equatorial diameter (the longest diameter) is approximately 12,756 km. This is not a big difference, but it does make the Earth not quite a sphere.