Earth Winds

By Kyle Schiffli

Wind Model


High/Low Pressure Area

This is an example of wind blowing from an area of high pressure to an area of low pressure. The colder, denser air over the water is pushing the warmer, less dense air, causing the wind that is whipping around the sand. When night comes, the air above the beach will have a higher pressure, and it will blow wind over the water.

Polar Jet Stream

The Polar Jet Stream is a stream of air that blows at much higher speeds than the surrounding air. It typically stays around the upper US, but can change location depending on the location of high and lower pressure areas. The Polar Jet Stream also greatly influences the weather of the US.

Sub-Tropical Jet Stream

The Sub-Tropical Jet Stream is much like the Polar Jet Stream, but it stays around the lower US/ upper Mexico. It typically isn't very influential on the weather of the US.

Horse Latitudes

The Horse Latitudes are located at the 30° latitude of both hemispheres. They are called the Horse Latitudes because of the horses that were thrown overboard to preserve water when there was a lack of wind.


The Doldrums are areas of weak winds located around the equator. Many ships evaded this area due to the lack of winds to push boats forward.

Trade Winds

The Trade Winds are areas of strong winds located near the equator in both hemispheres. They were used to help ships reach destinations faster and help with trade.


The Westerlies are found between 30° and 60° latitude in both hemispheres. They carry the warmer winds from the equator to the cooler areas near the poles. They come from the west and blow to the east.

Polar Easterlies

The Polar Easterlies are winds that occur between 60° and 90° latitudes in both hemispheres. They are winds that blow from the east to the west, away from the poles.

Coriolis Effect

The Coriolis effect is what causes winds not to blow in a straight line. Due to Earth's rotation, winds are deflected off of their original path and begin to curve.

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