Layers of the Atmosphere and Air Pressure

Which layer of the atmosphere do we live in?

• exosphere

• thermosphere

• mesosphere

• troposphere

Which layer of the atmosphere is the hottest?

• exosphere

• mesosphere

• thermosphere

• stratosphere

Air pressure is measured with a

• rain gauge

• barometer

• thermometer

• wind vane

The 2 most abundant gases in the atmosphere are

• helium and nitrogen

• nitrogen and oxygen

• oxygen and helium

• argon and nitrogen

The density of the air ______ as you go up in the atmosphere.

• increases

• decreases

• stays the same

Air is a mixture of many gases. The gas that makes up the LARGEST percentage of the atmosphere is

• nitrogen

• oxygen

• carbon dioxide

• helium

Which choice lists 3 layers of the atmosphere ordered from farthest from Earth's surface to closest to Earth's surface?

• mesosphere, troposphere, stratosphere

• exosphere, mesosphere, thermosphere

• thermosphere, exosphere, stratosphere

• exosphere, mesosphere, troposphere

If you are standing at the BOTTOM of the mountain there is...

• higher air pressure

• lower air pressure

Contains the Ozone Layer.

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

• All of the above.

Coldest layer.

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

• All of the above.