Atmosphere

What is the primary gas in the atmosphere?

• Nitrogen

• Oxygen

• Carbon Dioxide

• Water Vapor

Which layer of the atmosphere contains the ozone layer?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

In which layer of the atmosphere do meteors burn up?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

Where does the aurora borealis occur?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

Which layer of the atmosphere is the outermost layer?

• Troposphere

• Stratosphere

• Mesosphere

• Exosphere

What is the overall temperature trend in the troposphere?

• Temperature increases with altitude

• Temperature decreases with altitude

• Temperature remains constant

• Temperature fluctuates

Where is the ozone layer located?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

Which layer of the atmosphere is the coldest?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

At what altitude does the thermosphere begin?

• 31 miles (50 km)

• 53 miles (85 km)

• 375 miles (600 km)

• 6,200 miles (10,000 km)

Where does the exosphere merge with space?

• 31 miles (50 km)

• 53 miles (85 km)

• 375 miles (600 km)

• 6,200 miles (10,000 km)