Layers of the atmosphere

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

• Nitrogen

• Argon

• Oxygen

• Carbon Dioxide

Which layer of the atmosphere contains the ozone layer?

• Stratosphere

• Troposphere

• Mesosphere

• Thermosphere

Where is nearly all of Earth's water vapor found?

• Stratosphere

• Thermosphere

• Troposphere

• Mesosphere

What happens when warm air near Earth's surface rises to mix with cooler air high in the troposphere?

• It absorbs UV radiation

• It creates clouds

• It forms rain droplets

• It carries water vapor with it

Which layer of the atmosphere is the home of shooting stars?

• Thermosphere

• Troposphere

• Mesosphere

• Stratosphere

What causes the temperature to soar in the thermosphere?

• Rising warm air

• Presence of ozone layer

• Solar radiation

• Absorption of UV light

What is the final layer before entering outer space?

• Mesosphere

• Stratosphere

• Exosphere

• Troposphere

What makes the exosphere the perfect place for human-made satellites to orbit the planet?

• Low temperature

• Presence of water vapor

• Light gases

• High density

What holds the gases in Earth's atmosphere in place?

• Magnetic force

• Solar radiation

• Gravity

• Friction

Which layer of the atmosphere is the densest?

• Stratosphere

• Troposphere

• Mesosphere

• Thermosphere