Earth's Atmosphere Quiz

What is the most abundant gas in Earth's atmosphere?

• Oxygen

• Argon

• Nitrogen

• Carbon Dioxide

What percentage of Earth's atmosphere is composed of oxygen?

• 78%

• 21%

• 0.9%

• 0.1%

Which gas makes up approximately 0.9% of Earth's atmosphere?

• Helium

• Argon

• Methane

• Neon

What percentage of Earth's atmosphere is made up of gases other than nitrogen, oxygen, and argon?

• 78%

• 21%

• 0.9%

• 0.1%

What is the lowest layer of Earth's atmosphere called?

• Mesosphere

• Stratosphere

• Thermosphere

• Troposphere

Which layer of Earth's atmosphere extends to about 50,000 meters?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

What is the name of the layer of Earth's atmosphere that extends to about 90,000 meters and where meteors burn up?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

Which layer of Earth's atmosphere is the top layer that goes out into space?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

Where is the ozone layer located?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

At what altitude does the thermosphere start?

• 15,000 meters

• 50,000 meters

• 90,000 meters

• Beyond 110,000 meters