Exam 5: Condensation - Dew - Fog - and Clouds

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​As Apollo 12 ascended into the atmosphere, the height of the surrounding clouds was noted to be 42,000 feet. A lightning strike was seen within these clouds, indicating that they must have been

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​When radiation fog "burns off", the fog tends to dissipate

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​In infrared-enhanced images, clouds with the coldest (highest) tops are typically assigned the colors ____ or ____.

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​Under what conditions can a cloud form when air is sinking?

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​As the air cools during the night, the relative humidity increases. When the relative humidity reaches about 75 percent, condensation may begin on the most active hygroscopic nuclei, producing a ____________________ haze.​

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​Nacreous clouds are commonly described as ____________________ clouds.

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​In modern satellites, a special type of advanced radiometer (called a(n) ____________________) provides satellite images with much better resolution than was available in the past.

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​Mammatus clouds most frequently form on the underside of ____ clouds.

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​In Howard's cloud classification system sheetlike clouds were named ____ ("layer"); a puffy cloud ____ ("heap"); a wispy cloud ____ ("curl of hair"); and a rain cloud ____ ("violent rain").

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​____________________ fog is rare over tropical water.

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​Frost forms when the dew point temperature is at or below freezing.

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​The cloud with the greatest vertical growth is

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​Light or moderate-but-steady precipitation is most often associated with ____ clouds.

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​Jet aircraft flying at high altitudes often produce a cirrus-like trail of condensed vapor called a condensation trail or ____________________.

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​Distinguish among dry haze, wet haze, and fog.

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​With which cloud type would each of the following phenomena be associated? lightning hail tornadoes brief heavy rain steady rain watery sun halo mackerel sky ​

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​Advection fog is often observed along the Pacific coast during summer, as westerly winds carry moist air toward the shore. The fog forms because the surface water near the coast is ____ the surface water farther offshore.

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​Outline the historic development of the cloud classification system used today.

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​The condensation nuclei most favorable for producing clouds (called cloud condensation nuclei) have radii of ____________________ µm or more.

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​____________________ fog forms when two unsaturated bodies of air mix and the resulting mixture is saturated.

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