<p><strong>Fig. 3.8.</strong> As the earth rotates, points on the equator move at a greater rotational velocity than points near the north or south pole. An air mass flowing from the North Pole to the equator (shown in green) is deflected to its right in the Northern Hemisphere, due to the rotation of the earth.</p>

Fig. 3.8. As the earth rotates, points on the equator move at a greater rotational velocity than points near the north or south pole. An air mass flowing from the North Pole to the equator (shown in green) is deflected to its right in the Northern Hemisphere, due to the rotation of the earth.

Image by Byron Inouye