Winds

By: Julia Montgomery

What is Wind?

Wind is air that is moving parallel to the ground.

What causes Wind:

Winds are caused by the uneven heating of the Earth's surface.

Local Winds

Definition: sideways movement of air.


How they are created: Local winds are caused by the unequal hearing of Earth's surface.


Types of Local Winds:

  1. Land Breeze
  2. Sea Breeze

Land Breeze

A Land Breeze is a type of Local wind that blows from a body of water to the land. These breezes only happen in the evening. In the night time air over water heats up faster than air over land. Since the cool air over land is denser and higher in pressure, it moves beneath the warm air over the water.

Sea Breeze

A Sea Breeze is a type of local wind that blows from land to a body of water. These breezes only happen in the day time. In the day time air over land heats up faster than air over water. Since the cool air over the water, is denser and higher in pressure, it moves beneath the warm air over the land.

Global Winds

Definition: a wind that blows steadily over long distances


How they are created: When the sun shines on Earth, it shines on the Equator. The sun also shines at an angle on the North, and South poles. Because of Earth's rotation from east to west, global winds curve. This is call the Coriolis effect. This effect makes winds in the Northern hemisphere curve to the right, and winds in the Southern Hemisphere curve to the left.


Large Convection Currents: On the Earth, in the Poles there is cool air, while at the equator is hot air. As the cold air moves closer, and closer down towards the equator because; cold air sinks, it get's warmer. Then since that air becomes warm and hot air rises, that air while rise back up to the poles and the air while become cool. Now the process will repeat.

Trade Winds

Trade winds are winds that blow from the Northern Hemisphere towards the equator. These winds usually lie between 0 degrees and 30 degrees latitude. Since these winds are really strong , sailors use the winds to help them move their cargo faster.