TB_chapter5-condense,fog - Chapter 5 Condensation Dew Fog...

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Chapter 5 Condensation: Dew, Fog, and Clouds TEST BANK Multiple Choice Questions 1.Dew is most likely to form on: a. clear, calm nights. b. cloudy, calm nights. c. clear, windy nights. d. cloudy, windy nights. e. rainy nights. ANSWER: a 2. The name given to a liquid drop of dew that freezes when the air temperature drops below freezing is: a. frost. b. black frost. c. hoarfrost. d. white frost. e. frozen dew. ANSWER: e 3.The cooling of the ground to produce dew is mainly the result of: a. conduction. b. radiational cooling. c. cooling due to the release of latent heat. d. advection. ANSWER: b 4. For frozen dew to form, a. the dew point must be above freezing. b. the minimum temperature must fall to freezing or below. c. dew must form and then freeze. d. all of the above ANSWER: d 102
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5. Suppose it is a winter night and at about 11 p.m., the air cools to the dew-point temperature and a thick radiation fog develops. If the air continues to cool during the night, in 5 hours the dew point temperature will probably: a. decrease as the air becomes drier. b. decrease as the air becomes moister. c. increase as the air becomes drier. d. increase as the air becomes moister. ANSWER: a 6. Particles that serve as surfaces on which water vapor may condense are called: a. hydrophobic nuclei. b. nacreous nuclei. c. condensation nuclei. d. scud. ANSWER: c 7. Frost forms when: a. objects on the ground cool below the dew point temperature. b. the dew point is 32 o F or below. c. water vapor changes into ice without first becoming a liquid. d. all of the above ANSWER: d 8. On a humid day, the __________ causes salty potato chips left outside in an uncovered bowl to turn soggy. a. repelling of water by hydrophobic condensation nuclei b. repelling of water by hygroscopic condensation nuclei c. attraction of water by hydrophobic condensation nuclei d. attraction of water by hygroscopic condensation nuclei ANSWER: d 9. Frost typically forms on the inside of a windowpane (rather than the outside) because: a. the inside of the pane is colder than the outside. b. there is more water vapor touching the inside of the pane. c. there is less water vapor touching the inside of the pane. ANSWER: b 103
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10. At midnight in a shallow layer of air near the ground, the air temperature is 44 o F and the dew point temperature is 36 o F. If the air cools at a rate of 2 o F per hour until the dew point is reached, and at a rate of 1 o F per hour thereafter, then at 6:00 a.m.: a. the temperature will be 34 o F and no condensation will be present. b. the temperature will be 32 o F with frost and frozen dew present. c. the temperature will be 32 o F and only frost will be present. d. the temperature will be 32 o F and only frozen dew will be present. e. the temperature will be 34
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TB_chapter5-condense,fog - Chapter 5 Condensation Dew Fog...

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