Unit 3 Study Guide

Unit 3 Study Guide PowerPoint

By Cami Fleitas

​The Atmosphere: Layers

​Order of the Layers:

Thermosphere- (hot) absorbs high energy radiation

Mesosphere- (cold) burns meteoroids

Stratosphere- (hot) has the ozone layer

Troposphere - (cold) densest layer; where we live

As altitude increases and air pressure decreases, it effects temperature.​ This happens because of the way energy is absorbed into the atmosphere.

​​Temperature and altitude

​Air Pressure is like the force of wind. When altitude increases, air pressure decreases. While climbing a mountain, you will notice a difference in air and is hard to breathe in.

​Air Pressure

Air pressure and altitude

Multiple Choice

As altitude increases…

• Air pressure increases

• Air pressure decreases

• Temperature increases

• None of the above

Greenhouse effect and the ozone layer

​The Greenhouse effect is when a mixture of gases warm up the Earth. When there is sunlight, the gases heat up by absorbing energy. They release the energy and then it warms up the Earth.

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The ozone layer is a layer in the stratosphere that protects humans from the sun’s harmful rays.​ Our ozone layer is decreasing because of air pollution.

​Wind: Explained

The movement of air and differences in air pressure is called WIND.

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Uneven heating causes the air to be at different temperatures. This is how in Florida was have more warm air and in Europe (for example) has cooler air.​

Subject | Subject

Multiple Choice

_____ is the reason why air is different temperatures

• Air pressure

• Heat

• Uneven heating

• Temperature

The Coriolis effect is the process of how wind rotates with the earth.​

​wind can move while earth is rotating.

​Coriolis effect

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​Global winds: Explained

​Global Winds in order:

Trade Winds 0-30°

Westerlies 30-60°

Polar Easterlies 60-90°

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Global Winds are ​different wind systems that travel long distances

Doldrums are areas in the ocean that are calm and have no wind

Horse Latitudes are also areas that are calm​ but air stops moving and sinks

Multiple Choice

Is this the correct order of global winds?

Trade winds

Polar Easterlies

Westerlies

• True

• False

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​During the day, air from the valley blows up into the mountains so the valley has high pressure. During the night, the opposite happens, mountains have high pressure.​

​Valley and Mountain breezes

​During the day, air from the sea has high pressure and pushes on land.

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During the night, the opposite happens which makes the land have more pressure.

​Land and Sea breezes

Local Winds: Explained

Multiple Choice

During the day, land has…

• High pressure

• Low pressure

• No pressure

​jet streams

Jet streams are narrow belts with a huge gust of wind that travels from west to east. Polar jet streams are near the poles and subtropical jet streams are near the equator.

​​Review (yes I know but do it anyways)

1. The layers of the atmosphere are : thermosphere, mesosphere, stratosphere, and troposphere

2. When altitude increases, air pressure decreases

3. The Coriolis effect is how wind rotates with Earth

4. The Greenhouse effect is the reason why the Earth is being warmed

5. Global winds are trade winds, westerlies, and polar easterlies.

6. Local winds are sea & land breezes and valley & mountain breezes