Layers of the Atmosphere

Hot air balloons fly in the __________.

• troposphere

• mesosphere

• thermosphere

Which layer of the atmosphere contains the ozone layer?

• mesosphere

• troposphere

• stratosphere

• thermosphere

What is the name of earth's atmospheric layer where weather occurs?

• stratosphere

• thermosphere

• exosphere

• troposphere

Which layer of the atmosphere is the coldest layer?

• thermosphere

• mesosphere

• exosphere

• stratosphere

List the layers of the atmosphere in order from Earth's surface to outer space.

• stratosphere, thermosphere, troposphere, mesosphere, exosphere

• troposphere, mesosphere, thermosphere, exosphere, stratosphere

• troposphere, stratosphere, mesosphere, thermosphere, exosphere

• thermosphere, troposphere, mesosphere, stratosphere, exosphere

The air pressure decreases as the altitude

• Decreases

• Increases

• Remains constant

• They are not related

The lowermost layer of the atmosphere

• Stratosphere

• Mesosphere

• Troposphere

• Exosphere

The ozone layer is found in

• Stratosphere

• Thermosphere

• Exosphere

• Troposphere

Our _________ is the layer of gases that surrounds our planet.

• ocean
• weather
• atmosphere
• ozone

What percentage of our atmosphere is made of oxygen? 

• 1%
• 21%
• 78%
• 25%