1 A) argon B) carbon dioxide C) water vapor D) ozone 2 A) high pressure, low temperature B) low density, high density C) high pressure, low pressure D) low pressure, high pressure 3 A) thermosphere B) troposphere C) tropopause D) stratopause 4 A) stratosphere B) troposphere C) mesosphere D) thermosphere 5 A) Abrasion B) Conduction C) Convection D) Radiation 6 A) It is the source of clouds, rain, and snow. B) It changes with the seasons. C) It helps regulate the amount of energy the atmosphere absorbs. D) It makes up such a small amount that it isn't very important. 7 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078746361/561682/68_sun_ss_110c.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (42.0K)</a>]]> A) 6 percent B) 25 percent C) 35 percent D) 31 percent 8 A) conduction B) advection C) condensation D) convection 9 A) due to convection currents B) The air has reached the dew point. C) Clouds block incoming radiation from the Sun. D) The air is farther from the heat source. 10 A) a temperature gradient B) conduction C) a temperature inversion D) normal temperature 11 A) Temperature B) Humidity C) Heat D) Dew point 12 A) radiation B) advection C) coalescence D) convection 13 A) extraterrestrial particles B) organic particles C) dust and salt particles D) clay particles 14 A) latent particles, warms B) latent energy, cools C) latent heat, decreases the temperature of D) latent heat, warms 15 A) X-ray radiation B) ultraviolet radiation C) infrared radiation D) microwave radiation 16 A) rock cycle B) water cycle C) carbon cycle D) nitrogen cycle 17 A) Cold air rises, and warm air sinks. B) Warm air rises, and cold air sinks. C) A layer of cooler air lies over a relatively cool layer of air. D) A layer of warmer air lies over a cool layer of air. 18 A) argon B) nitrogen C) oxygen D) carbon dioxide 19 A) 10% B) 20% C) 30% D) 50% 20 A) ultraviolet B) infrared C) violet D) red 21 A) Warm air sinks in clouds as cold air rises. B) Higher pressure in the upper atmosphere forces warm air to the surface. C) The Sun's rays heat the upper atmosphere most, and the heat transfers to the surface. D) Heat at the surface transfers to the atmosphere. 22 A) conduction B) radiation C) subduction D) convection
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