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- 1. Multiple Choice
The most abundant gas in Earth's atmosphere today is what?
Oxygen
Nitrogen
Troposphere
Helium
- 2. Multiple Choice
What gas makes up 21% of Earth's Atmosphere today?
Nitrogen
Oxygen
Ozone
None of the Above
- 3. Multiple Choice
Water vapor is one of the two main gases found in
Earth's atmosphere today
True
False
- 4. Multiple Choice
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
- 5. Multiple ChoiceThis gas was in high concentrations in the developing atmospheres and later dissolved into rainwater, added to the oceans, then settled to the bottom of the ocean.oxygencarbon dioxideargonwater vapor
- 6. Multiple Choice
What is the percentage of nitrogen in Earth's atmosphere today?
1%
21%
78%
90%
- 7. Multiple ChoiceWhat produced oxygen within the early stages of our atmosphere?PlantsVolcanosGalactic DebrisBacteria
- 8. Multiple ChoiceWhat happened to the carbon dioxide that was dissolved in the early oceans?It evaporatedIt turned into sedimentIt was changed into oxygenI can't think of another good wrong answer
- 9. Multiple ChoiceWhy is Earth's atmosphere important?It is beautiful.It prevents pollution from happening.Life on Mars could not exist without it.Life on Earth could not exist without it.
- 10. Multiple Choice
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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