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If suddenly Earth stopped spinning, the atmosphere would continue moving at 1100 mph at the equator. Land masses would be wiped clean of anything not attached to bedrock. However, if it happened over billions of years this would not be the case. If spinning stopped completely you would get 1/2 year daylight and 1/2 year night. The different temperature situation would change wind patterns so that air would move from the equator to the poles rather than parallel to the equator like they are now. Other affects include the degradation of Earth's magnetic field and perceptions in the sun’s motion.