Earth's Atmosphere Quiz

What is the main gas that makes up 78% of Earth's atmosphere?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Argon

Which layer of the atmosphere is closest to Earth and where humans live?

• Mesosphere

• Thermosphere

• Troposphere

• Stratosphere

What is the outermost layer of the atmosphere that acts as the boundary between Earth's atmosphere and space?

• Troposphere

• Stratosphere

• Mesosphere

• Exosphere

What is the measure of how fast the gas molecules in the atmosphere are moving?

• Air Pressure

• Density

• Temperature

• Altitude

Which gases are known as greenhouse gases that absorb heat and reradiate it back toward Earth's surface?

• Carbon Dioxide and Water Vapor

• Nitrogen and Carbon Dioxide

• Oxygen and Nitrogen

• Argon and Water Vapor

What is the main reason Earth's atmosphere can support life?

• Absorbs energy from the sun

• Absorbs harmful radiation from the sun

• Prevents Earth's surface from getting too hot

• Provides essential materials like oxygen and carbon dioxide

Which layer of the atmosphere has temperature increasing with altitude due to the presence of ozone molecules?

• Stratosphere

• Troposphere

• Thermosphere

• Mesosphere

What is the main gas that makes up about 21% of Earth's atmosphere?

• Nitrogen

• Oxygen

• Carbon Dioxide

• Argon

What is the measure of the mass of the air present in a particular volume of space?

• Altitude

• Air Pressure

• Temperature

• Density

Which layer of the atmosphere is above the mesosphere and has temperature increasing with altitude?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere