Atmosphere Review

What percentage of the earth's atmosphere is oxygen?

• 78%
• 28%
• 71%
• 21%

Which atmospheric layer is the ozone layer found?

• Troposphere
• Stratosphere
• Mesosphere
• Thermosphere

As we go higher in  the atmosphere, the air pressure

• decreases
• increases
• does not change
• gets heavier

Wind occurs because air usually moves from areas of ____ pressure to ____ pressure.

• high, low

• low, high

• moderate, high

• low, moderate

Winds are named by

• where they are going
• where they come from
• what they do
• how strong they are

Take a deep breath in, take a deep breath out. Most of the gas that passed through your mouth was

• oxygen

• nitrogen

• water vapor

• carbon dioxide

This gas is found in the stratosphere where it helps protect us from UV radiation.

A device that is used to measure atmospheric pressure is a ___________.

• barometer
• thermometer
• kilometer
• micrometer

what are isobars?

• lines connecting places of equal temperature
• lines drawn connecting places of equal pressure
• lines drawn to places of different temperatures
• lines drawn to places of different pressures

What is altitude?

• how much something weighs
• the distance above sea level
• how big something is
• how far away something is