Atmosphere

Chlorofluorocarbons are dangerous because they destroy the _________________.

• Exosphere

• Ozone

• Thermsophere

• Mesosphere

Narrow belts of strong winds called ___________ blow near the top of the troposphere.

• jet stream

• land breeze

• sea breeze

• Coriolis effect

The thin layer of air that surrounds Earth is called the _______.

• hydrosphere

• ionosphere

• exosphere

• atmosphere

The ozone layer helps protect us from _________.

• ozone layer

• ultraviolet radiation

• trade winds

• hurricanes

Nitrogen makes up what percentage of the atmosphere?

• 21%

• 78%

• 1%

• 90%

What causes the brown haze near cities?

• car exhaust

• conduction

• mud

• wind

Which is the uppermost layer of the atmosphere?

• stratosphere

• thermosphere

• troposhpere

• exosphere

What layer of the atmosphere has the most water?

• mesosphere

• troposhere

• exosphere

• ionosphere

What protects living things from too much ultraviolet radiation?

• ozone layer

• oxygen

• argon

• nitrogen

Where is air pressure the least?

• troposphere

• exosphere

• thermosphere

• stratosphere