homework help, science?

Question

The most abundant gas in the atmosphere is:

Answer 1

Nitrogen 78% Oxygen 21%

Answer 2

The Atmosphere of Earth

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Question #1: The most abundant gas in the atmosphere is
(A). argon.
(B). oxygen.
(C). nitrogen.
(D). water vapor.


#1 Answer is C
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Question #2: The atmospheric gas that exists in variable amounts is
(A). oxygen.
(B). water vapor.
(C). nitrogen.
(D). argon.


#2 Answer is B
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Question #3: The height of a mercury column in a barometer depends on
(A). the width of the glass tube.
(B). the height of the glass tube.
(C). atmospheric pressure alone.
(D). the width and height of the glass tube and the density of mercury.


#3 Answer is C
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Question #4: About how much incoming solar radiation makes it through the atmosphere to reach the earth's surface?
(A). about a tenth
(B). about a quarter
(C). about half
(D). all of it


#4 Answer is C
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Question #5: Incoming solar radiation is absorbed by the earth's surface, which emits the energy with
(A). about the same wavelength.
(B). wavelengths longer than visible light.
(C). wavelengths shorter than visible light.
(D). variable wavelengths ranging over a wide range of frequencies on both sides of visible light.


#5 Answer is B
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Question #6: The greenhouse effect occurs because outgoing radiation is partly absorbed by
(A). oxygen and water vapor.
(B). carbon dioxide and oxygen.
(C). carbon dioxide and water vapor.
(D). oxygen, nitrogen, and argon.


#6 Answer is C
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Question #7: Temperature increases with altitude in the
(A). stratosphere.
(B). troposphere.
(C). mesosphere.
(D). no, temperature never increases with altitude.


#7 Answer is A
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Question #8: A sea breeze is partly a result of
(A). density differences between soil and water.
(B). differences in specific heat of soil and water.
(C). storms out at sea.
(D). dust devils over adjacent land areas.


#8 Answer is B
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Question #9: One of the factors that influences the movement of warm and cool air masses is a wave in the
(A). prevailing westerlies.
(B). jet stream.
(C). northeast trade wind belt.
(D). intertropical convergence belt.


#9 Answer is B
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Question #10: A news story reports a humidity of 60%. This is a report on the
(A). water vapor capacity.
(B). dew point.
(C). absolute humidity.
(D). relative humidity.


#10 Answer is D
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Question #11: The temperature to which air must be cooled to result in a relative humidity of 100% is called the
(A). dew point temperature.
(B). condensation point temperature.
(C). wind cooling factor.
(D). absolute temperature.


#11 Answer is A
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Question #12: If the temperature of an object is below 0o C
(A). frost will fall from the air onto the object.
(B). frost will form directly on the object.
(C). the dew point cannot be reached.
(D). dew will form, which freezes into frost.


#12 Answer is B
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Question #13: Tiny droplets of water can form in air when the relative humidity reaches 100% only if the air
(A). can hold more water vapor.
(B). contains dust or smoke particles.
(C). has not reached the dew point.
(D). is not being cooled.


#13 Answer is B
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Question #14: Frost would be most likely to form
(A). under trees on a windy night.
(B). in the open on a calm, cloudy night.
(C). in the open on a calm, clear night.
(D). under trees on a calm, cloudy night.


#14 Answer is C
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Question #15: The air temperature is 35 degrees Fahrenheit and the wind is blowing 20 mph, giving a wind chill factor of 12 degrees Fahrenheit. This means
(A). this is how cold you will feel.
(B). water will freeze in a bowl on the ground.
(C). a car radiator will need antifreeze protection down to 12 degrees F.
(D). all of the above.


#15 Answer is A
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Question #16: Air moving from a higher altitude to a lower altitude on the side of a mountain
(A). is cooled since cool air is more dense.
(B). will have a higher absolute humidity.
(C). will have a higher relative humidity.
(D). is warmed by compression.


#16 Answer is D
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Question #17: The intertropical convergence zone has tropical rain forests because
(A). sinking air warms, increasing the relative humidity.
(B). rising air cools as it is pushed upward.
(C). it is a high pressure belt of desending air.
(D). dry rising air is moved horizontally by the jet stream.


#17 Answer is B
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Question #18: The major factor that sets the stage for wind to blow is
(A). the fact that warm air will hold more water vapor than cool air.
(B). the fact that air becomes cooler when water vapor is condensed.
(C). that rising air becomes warmer from compression.
(D). uneven heating of the earth's surface.


#18 Answer is D

Answer 3

Nitrogen 78%