Because Earth's circumference is greatest at the equator and Earth rotates once each day, a point on the equator rotates much faster than a point near the North Pole.

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This is due to the fact that the circumference of a circle is greatest at its widest point, which on Earth is at the equator. As the Earth rotates once each day, a point on the equator travels a much larger distance (in terms of arc length) than a point near the North Pole, which rotates around a much smaller circle. This means that a point on the equator rotates much faster than a point near the North Pole.

Because Earth's Circumference Is Greatest at the Equator and Earth