Atmospheric Layers

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

• Mesosphere

• Stratosphere

• Thermosphere

• Troposphere

Which layer of the Earth's atmosphere is directly above the stratosphere?

• Troposphere

• Mesosphere

• Thermosphere

• Exosphere

In which layer of the Earth's atmosphere do most weather phenomena occur?

• Stratosphere

• Mesosphere

• Thermosphere

• Troposphere

Tags

NGSS.MS-ESS2-5

Where is the ozone layer located?

• Troposphere

• Mesosphere

• Stratosphere

• Thermosphere

What gases were predominantly present in the early atmosphere?

• Oxygen and Carbon Dioxide

• Methane and Ammonia

• Nitrogen and Hydrogen

• Argon and Helium

What role does the ozone layer play in relation to ultraviolet radiation from the sun?

• It generates ultraviolet radiation

• It blocks out ultraviolet radiation

• It has no effect on ultraviolet radiation

• It amplifies ultraviolet radiation

What process do micro-organisms such as Blue-Green Algae perform that affects the atmosphere?

• They take in oxygen and release carbon dioxide

• They take in nitrogen and release oxygen

• They take in carbon dioxide and release oxygen

• They take in ultraviolet radiation and release oxygen

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

• Oxygen

• Carbon Dioxide

• Argon

• Nitrogen

What percentage of today's atmosphere is Oxygen?

• 78%

• 21%

• 0.9%

• 0.037%

What is the outermost layer of the Earth's atmosphere?

• Mesosphere

• Stratosphere

• Troposphere

• Exosphere