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10 questions
The most abundant gas in Earth's atmosphere today is what?
Oxygen
Nitrogen
Troposphere
Helium
What gas makes up 21% of Earth's Atmosphere today?
Nitrogen
Oxygen
Ozone
None of the Above
Water vapor is one of the two main gases found in
Earth's atmosphere today
True
False
This gas was in high concentrations in the early atmosphere, and later condensed to form the Earth's oceans.
oxygen
carbon dioxide
sulfur oxides
water vapor
What is the percentage of nitrogen in Earth's atmosphere today?
1%
21%
78%
90%
What was the Earth's early atmosphere like ?
Similar to Mars and Venus. A large amount of carbon dioxide,little or no oxygen small amounts of other gases, such as ammonia and methane
Similar to Mercury. A large amount of oxygen, sodium and hydrogen.
Similar to Jupiter. A large amount of hydrogen and helium.
Similar to Pluto. A large amount of nitrogen.
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