Question 1 The most abundant gas in the atmosphere is A) argon. B) oxygen. C) ni

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Question 1 The most abundant gas in the atmosphere is A) argon. B) oxygen. C) nitrogen. D) water vapor. Question 2 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 Question 3 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. Question 4 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. Question 5 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. Question 6 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 descending air. D) dry rising air is moved horizontally by the jet stream. Question 7 The principal source of water vapor in Earth's hydrologic cycle is A) the ocean. B) lakes, rivers, and soil. C) plants and animals. D) burning of wood, fossil fuels, and crop residue. Question 8 Showers or thunderstorms are usually associated with which type of cloud? A) stratus B) cirrus C) cumulus D) any of the above Question 9 A cold front is the boundary between A) the southward edge of a cold air mass. B) the northward edge of a warm air mass. C) a moving warm air mass and a cooler air mass. D) a moving cold air mass and a warmer air mass. Question 10 Winds tend to blow in what direction with respect to a low-pressure center in the Northern Hemisphere? A) counterclockwise B) clockwise C) perpendicular to the direction of movement D) parallel to the isobars Question 11 Tornadoes are associated with what type of clouds? A) thunderstorms B) stratus C) cirrus D) none of the above Question 12 Most of the southeastern part of the United States has a climate that is A) Mediterranean. B) humid continental. C) marine. D) humid subtropical.

Explanation / Answer

1) nitrogen

2) about half

3) carbon dioxide and water vapor

4) dew point temperature

5)  is warmed by compression.

6)  rising air cools as it is pushed upward.

7) the ocean

8) cumulus

9)   a moving cold air mass and a warmer air mass

10) counterclockwise

11) thunderstorms

12)   humid subtropical

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