On this day in 1781, General George Washington, commanding a force of 17,000 French and Continental troops, begins the siege known as the Battle of Yorktown against British General Lord Charles Cornwallis and a contingent of 9,000 British troops at Yorktown, Virginia, in the most important battle of the Revolutionary War.
Earth's rotation causes the trade winds, in a way. If Earth didn't rotate, the wind at these latitudes would blow straight from the subtropical highs to the ITCZ.n the Northern Hemisphere, the Earth rotates counterclockwise so the wind is deflected to the right. The Southern Hemisphere rotates clockwise deflecting the wind to the left. Regardless, the Coriolis effect only influences the direction of the wind, not its speed.
As you probably already know, the earth rotates on its axis from west to east. This rotation causes both the wind and ocean currents to move from east to west. Thus, the wind movement and ocean currents in the northern hemisphere goes clockwise and counter clockwise in the southern hemisphere. Because Earth rotates on its axis from west towards the east, air near the surface from the tropics is moved toward a westerly direction (toward the right as it is often called) in the northern hemisphere.