Exploring the Layers and Composition of Earth's Atmosphere

What process is believed to have formed Earth's early atmosphere?

• Solar radiation

• Meteor impacts

• Volcanic outgassing

• Photosynthesis

What was the early atmosphere rich in?

• Hydrogen and helium

• Oxygen and nitrogen

• Carbon dioxide and water vapor

• Methane and ammonia

What is the primary component of the modern atmosphere?

• Oxygen

• Nitrogen

• Water vapor

• Carbon dioxide

Where can you find the average chemical composition of the troposphere?

• In the periodic table

• On page one of the Earth science reference tables

• In the weather forecast

• In the biology textbook

Which layer of the atmosphere is directly above the troposphere?

• Exosphere

• Thermosphere

• Stratosphere

• Mesosphere

What happens to the temperature as you rise through the troposphere?

• It increases

• It remains constant

• It decreases

• It fluctuates

How does air pressure change as you go up through the atmosphere?

• It increases

• It remains the same

• It decreases

• It fluctuates

Tags

NGSS.MS-ESS2-6

What happens to water vapor concentration as altitude increases?

• It increases

• It fluctuates

• It remains constant

• It decreases

Where does all of Earth's weather occur?

• Troposphere

• Stratosphere

• Thermosphere

• Mesosphere

Tags

NGSS.MS-ESS2-5

What is the function of the ozone layer?

• To produce oxygen

• To reflect sunlight

• To absorb harmful ultraviolet rays

• To trap greenhouse gases