Patterns of Circulation in Earth's Atmosphere

Front

What are the easterlies?

Back

Winds that blow from 30 degrees latitude in both hemispheres almost to the equator.

Front

What happens to cool air?

Back

Cool air sinks, causing higher air pressure.

Front

What occurs to air particles as air cools?

Back

As air cools, its particles move closer together, which means its density has increased.

Front

If the air above the water is warm and the air above the land is cool, which way will the wind blow?

Back

The wind will blow from the water to the land.

Front

What is the main cause of air circulation in the Earth's atmosphere?

Back

The main cause of air circulation is energy from the sun.

Front

Define 'atmospheric circulation'.

Back

The large-scale movement of air that distributes heat and moisture around the Earth.

Front

What are trade winds?

Back

Winds that blow from the east towards the west in the tropics.

Front

What is the role of the sun in atmospheric circulation?

Back

The sun heats the Earth's surface unevenly, creating temperature differences that drive wind patterns.

Front

What is the significance of high and low pressure areas?

Back

High pressure areas are associated with sinking air and clear skies, while low pressure areas are associated with rising air and stormy weather.

Front

What are westerlies?

Back

Winds that blow from the west towards the east in the mid-latitudes.