5th Chapter 8

A mixture of gases in constant motion

• Wind

• Air

• Front

• Climate

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This is created by differences in air temperatures.

• Front

• Air mass

• Wind

• Convection current

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Air is mostly made up of _____

• Carbon dioxide

• Nitrogen

• Oxygen

How many layers are in Earth's atmosphere?

• 3

• 4

• 5

• 6

When solids, gases, or liquids rise and sink in a looping path

• Jet stream

• Air mass

• Front

• Convection current

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Wind generally blows from ________ over much of the United States.

• west to east

• east to west

• north to west

• north to east

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A band of very fast wind formed by the different temperatures between convection currents.

• Air mass

• Jet stream

• Convection current

• Front

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A large body of air with similar properties all through it.

• Front

• Convection current

• Air mass

• Jet stream

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The land near the poles is not very moist. So, the air mass from this area is cold and fairly dry.

• Continental tropical air

• Continental polar air

• Maritime tropical air

• Maritime polar air

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Humid air that has lots of moisture. Over tropical oceans or rainforests, an air mass becomes warm and very humid because water can easily evaporate there.

• Continental Tropical air

• Continental polar air

• Maritime tropical air

• Maritime polar air

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