By Todd Windish
What are Winds?
Winds are the movement of air from areas of high air pressure and low air pressure to put it in simplest terms wind is the sideways movement of air that always moves from a high air pressure area to a low air pressure area. the name of the winds tell you were winds are coming from like a south wind for example it blows from the south. Winds are caused by unequal heating of the earths surface.
Local winds are are winds that blow over a short distance. An example is a breeze blowing from the water over a beach is a local wind. Local winds are caused by unequal heating of earths surface over a short area. The Unequal heating often occurs by oceans, lakes and beaches. There are two types of local winds, Sea breezes and Land breezes. Sea breezes are a wind that blows from an ocean,lake or sea towards land and they occur during the daytime. During the day the sun heats the land and the sea and the land heats up faster than the water. The air above the land becomes warmer than the air above the water. the cooler air above the water moves toward the land, the warm air over the land goes up. The air that moves. Land breezes are winds that blow from the land towards a body of water and they occur during the daytime. The land and water cool down and but the land cools down faster than the water and the water becomes warmer than the land. the warm air above the water rises and the cooler heavier air falls down. The air that moves from the land to the sea is called a land breeze.
Global winds are winds that travel over a large area as the name states they blow across the globe. Global winds are caused by unequal heating of the earths surface over a large area.Uneven heating of the earth at the equator causes a huge convection current. at the equator warm air rises ans cold air sinks at the north and south poles. Colder air has high air pressure and warm air has low air pressure. This shows that higher air pressure occurs at the poles and lower air pressure at the equator. This difference causes winds to blow from the area of higher air pressure at the poles to a lower air pressure at the equator.The warm air at the equator is pushed back toward the poles and sinks. This cold polar air has greater air pressure creating winds that move the sir back towards the equator. One example of a global wind around the world is the Doldrums. Doldrums are weak , calm winds that are located at the equator.
One example of a global wind around the world is the trade winds. Trade winds lie between 0 and 30 degrees latitude and are very strong. Sailors used these winds to help them move their cargo to other countries to trade goods.
Another example of a global wind is the prevailing westerlies. The prevailing westerlies lie between 30 and 60 degrees north and south latitude and blow from the west.
One last example are the jet streams. Jet streams is a band of very strong winds in the upper troposphere. Airplanes and jets use these to travel faster while saving fuel.