Atmosphere

Which layer of the atmosphere has the most water vapor?

• Thermosphere

• Mesosphere

• Stratosphere

• Troposphere

Which layer has the lowest air pressure?

• Thermosphere

• Mesosphere

• Stratosphere

• Troposphere

If we were to suddenly have twice as many trees on the planet as we do now, what do you hypothesize might happen?

• oxygen levels would decrease due to more photosynthesis

• oxygen levels would stay the same

• carbon dioxide would decrease due to more photosynthesis

• carbon dioxide would increase due to trees using up all the water

 Layer we live in and breathe

​ ​ ​ ​ ​ (a)  

• Troposphere
• Stratosphere
• Mesosphere
• Thermosphere
• Exosphere

Outermost layer

​​ (a)  

• Stratosphere
• Mesosphere
• Thermosphere
• Exosphere
• Troposphere

High concentration of UV‐absorbing ozone

​ ​ ​ ​ ​ (a)  

• Stratosphere
• Troposphere
• Mesosphere
• Thermosphere
• Exosphere

  Where almost all weather occurs

​ ​ ​ ​ ​ (a)  

• Troposphere
• Stratosphere
• Mesosphere
• Thermosphere
• Exosphere

What property is used to divide the layers of the atmosphere? (click to enlarge picture)

• Air pressure

• Temperature

• Type of gas

How does temperature in the Troposphere change as the altitude increases? (click to enlarge picture)

• temperature increases

• temperature decreases

• temperature stays the same

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

• ocean
• weather
• atmosphere
• ozone