Atmosphere Evolution

The current atmosphere is composed of mainly?

• Oxygen
• Argon
• Carbon dioxide
• Nitrogen

Oxygen is the most common gas in the current atmosphere.

• True
• False
• Both True and False
• Neither True nor False

Within the current atmosphere, what gas is 21%?

• nitrogen
• oxygen
• argon
• flatulence

What two elements made up the early atmosphere?

• Nitrogen and Oxygen
• Carbon Dioxide and Oxygen
• Hydrogen and Helium
• Water Vapor and Oxygen

Has the Earth's atmosphere remained constant throughout time?

• Yes
• No

What produced oxygen within the early stages of our atmosphere?

• Plants
• Volcanos
• Galactic Debris
• Bacteria

Which of the following were not one of the major gases in the atmosphere when the moon formed?

• Water Vapor (H20)
• Carbon Dioxide (CO2)
• Ammonia (NH3)
• Oxygen (O2)

What happened to our initial atmosphere?

• It drifted off into space
• The gases combined to form oxygen
• We've always had the same atmosphere
• None of the above

If you looked up into the sky and did not see a moon, what gases would make up the atmosphere?

• Oxygen and Nitrogen
• Helium and Hydrogen
• Water Vapor, Carbon Dioxide, and Ammonia
• Oxygen and Ammonia

How many stages of evolution has the Earth's atmosphere received?

• 1
• 2
• 3
• 4