Exploring Earth's Atmospheric Layers

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

• Oxygen

• Nitrogen

• Carbon Dioxide

• Argon

Which layer of the atmosphere is closest to Earth's surface?

• Stratosphere

• Mesosphere

• Troposphere

• Thermosphere

What is the primary function of the ozone layer?

• To trap heat and keep Earth warm

• To reflect sunlight back into space

• To absorb harmful ultraviolet radiation

• To provide oxygen for breathing

Which human activity has significantly contributed to the depletion of the ozone layer?

• Deforestation

• Use of chlorofluorocarbons (CFCs)

• Burning of fossil fuels

• Industrial agriculture

Tags

NGSS.MS-ESS3-4

In which layer of the atmosphere does weather primarily occur?

• Stratosphere

• Mesosphere

• Troposphere

• Exosphere

Tags

NGSS.MS-ESS2-5

Which layer of the atmosphere contains the ozone layer?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

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

• 21%

• 78%

• 1%

• 0.03%

Which of the following is a greenhouse gas found in Earth's atmosphere?

• Nitrogen

• Oxygen

• Carbon Dioxide

• Argon

What is the approximate height range of the stratosphere?

• 0 to 10 km

• 10 to 50 km

• 50 to 85 km

• 85 to 600 km

Which of the following best describes the composition of Earth's atmosphere?

• 78% Oxygen, 21% Nitrogen, 1% Other gases

• 78% Nitrogen, 21% Oxygen, 1% Other gases

• 50% Nitrogen, 50% Oxygen

• 100% Carbon Dioxide