What happens on earth when it rotate on its axis?

Answer 1

On the surface of the planet, we experience day and night, as the Sun seems to move across the sky from east to west. This is actually the Earth spinning counterclockwise, west to east, as viewed from a point above the North Pole.

Since the Earth is moving fastest at the equator, moving objects are affected by the rotation as they move toward or away from the equator. Their paths seem to turn to the right (north of the equator) or left (south of the equator), but these are actually straight paths that curve as the Earth spins. This is called the Coriolis effect.