Structure and Composition of the Atmosphere

What layer of the atmosphere are the tops of mountains located? 

• mesosphere 
• thermosphere
• stratosphere
• troposphere

This gas makes up 21% of the atmosphere

• ozone
• oxygen
• nitrogen
• water vapor

This gas makes up 78% of the atmosphere

• oxygen
• nitrogen
• ozone
• carbon dioxide

Which of the following is the correct order of the atmosphere layers from Earth to space?

• troposphere, stratosphere, mesosphere, thermosphere, exosphere
• troposphere, mesosphere, thermosphere, exosphere, stratosphere
• thermosphere, stratosphere, mesosphere, troposphere, exosphere
• troposphere, stratosphere, mesosphere, exosphere, thermosphere

This is the coldest layer of the atmosphere

• troposphere
• thermosphere
• mesosphere
• stratosphere

This layer of the atmosphere contains most of the ozone

• troposphere
• thermosphere
• mesosphere
• stratosphere

This layer is where auroras are found

• exosphere
• thermosphere
• exosphere
• mesosphere

This layer is where weather occurs

• troposphere
• thermosphere
• exosphere
• stratosphere

What happens to the density (thickness)/ air pressure of the air as you increase in altitude?

• density increases
• density decreases
• density stays the same
• density disappears

As you go higher in the troposphere, the temperature _______________.

• decreases
• increases
• stays the same
• gets very hot