Question and answer
Score: Which sub-layer thins out into space, where there is no air? ozonosphere thermosphere ionosphere exosphere Question #2MultipleChoice Score: Today's atmosphere is full of nitrogen and oxygen. These are _____. trace gasesvariable gasesprimary gasessecondary gases Question #3MultipleChoice Score: Northern lights or auroras can be seen within the _____ sub-layer. ozonosphereionosphereexospheretroposphere Question #4MultipleChoice Score: Weather is associated with the _____ layer of the atmosphere. tropospherestratospheremesospherethermosphere Question #5MultipleChoice
Score: Water vapor in the air can be high or low, depending on your location. Water vapor is a _____. primary gasvariable gasdependent gassecondary gas Question #6TrueFalse Score: Life is responsible for creating the oxygen in our atmosphere. TrueFalse Question #7MultipleChoice Score: The most abundant trace gas in the atmosphere is _____. neonhydrogenargonhelium Question #8MultipleChoice Score: The sub-layer that protects us from ultraviolet radiation is the _____. troposphereozonosphereionosphereexosphere Question #9TextMultipleChoice Score: The stratospherethermosphereozonospheremesosphere is the coldest layer of the atmosphere. Question #10MultipleChoice Score: Most meteors do not hit the earth's surface because they collide with the atmosphere causing friction with the air and thus the meteor _____________. burns upexplodesshrinks in sizegoes back into space Question #11TextMultipleChoice Score: In the paleoatmosphere, carbon dioxideoxygennitrogenwater vapor was able to condense to form clouds and rain because the earth's surface cooled as there were fewer meteorite impacts. Question #12TextMultipleChoice Score: There is little vertical air movement in the mesospherestratosphereexospheretroposphere because of the cold, heavy air at the bottom of the layer. Question #13TrueFalse Score: Without gravity, air molecules would float away into space, leaving us without an atmosphere. TrueFalse Question #14MultipleSelect Score: Select all of the answers that apply. Billions of years ago, Earth was a very hot place due to _____. meteorite bombardmenthigh levels of carbon dioxide and water vaporEarth's strong gravitational pullcyanobacteria photosynthesis Question #15MultipleSelect Score: Select all of the answers that apply. Without its atmosphere, Earth would be _____. warmerbombarded by meteoritessimilar to Marsrelatively lifeless Question #16TextMultipleChoice Score: After most of the iron in the ocean was trapped in banded iron formations, argonoxygencarbon dioxidenitrogen began dispersing into the atmosphere.
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Expert answered|vanilla2bean|Points 3353|
Question
Asked 1/3/2013 10:40:10 AM
Updated 102 days ago|10/7/2021 3:21:02 PM
16 Answers/Comments
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3
Exosphere thins out into space, where there is no air.
Added 102 days ago|10/7/2021 3:05:15 PM
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3
Today's atmosphere is full of nitrogen and oxygen. These are primary gases.

Added 102 days ago|10/7/2021 3:07:05 PM
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3
Northern lights or auroras can be seen within the ionosphere sub-layer.

Added 102 days ago|10/7/2021 3:07:34 PM
This answer has been confirmed as correct and helpful.
3
Weather is associated with the troposphere layer of the atmosphere.
Added 102 days ago|10/7/2021 3:09:44 PM
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3
Water vapor in the air can be high or low, depending on your location. Water vapor is a primary gas.
Added 102 days ago|10/7/2021 3:11:58 PM
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3
Life is responsible for creating the oxygen in our atmosphere. TRUE.


Added 102 days ago|10/7/2021 3:13:34 PM
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3
The most abundant trace gas in the atmosphere is: Argon.


Added 102 days ago|10/7/2021 3:14:24 PM
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3
The sub-layer that protects us from ultraviolet radiation is the ozonosphere.
Added 102 days ago|10/7/2021 3:14:53 PM
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3
The Mesosphere is the coldest layer of the atmosphere.
Added 102 days ago|10/7/2021 3:15:24 PM
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3
Most meteors do not hit the earth's surface because they collide with the atmosphere causing friction with the air and thus the meteor burns up.
Added 102 days ago|10/7/2021 3:15:47 PM
This answer has been confirmed as correct and helpful.
3
In the paleoatmosphere, water vapor was able to condense to form clouds and rain because the earth's surface cooled as there were fewer meteorite impacts.
Added 102 days ago|10/7/2021 3:17:26 PM
This answer has been confirmed as correct and helpful.
3
There is little vertical air movement in the stratosphere because of the cold, heavy air at the bottom of the layer.
Added 102 days ago|10/7/2021 3:18:08 PM
This answer has been confirmed as correct and helpful.
3
Without gravity, air molecules would float away into space, leaving us without an atmosphere. TRUE.
Added 102 days ago|10/7/2021 3:18:55 PM
This answer has been confirmed as correct and helpful.
3
Billions of years ago, Earth was a very hot place due to meteorite bombardment.

Added 102 days ago|10/7/2021 3:19:47 PM
This answer has been confirmed as correct and helpful.
3
Without our unique atmosphere, the earth might be more similar to Mars, bombarded by meteorites, and lifeless.
Added 102 days ago|10/7/2021 3:20:26 PM
This answer has been confirmed as correct and helpful.
3
After most of the iron in the ocean was trapped in banded iron formations, oxygen began dispersing into the atmosphere.
Added 102 days ago|10/7/2021 3:21:02 PM
This answer has been confirmed as correct and helpful.
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