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Study Guide Answers

1.     The temperature at which condensation occurs is known as the ________ _____________ .
     dew point
2.     Convection currents, generated over warm surfaces such as the heated earth on a summer day, are also known as ____________________ .
     thermals
3.     Most clouds and weather systems form in the [a) highest; b) middle; c) lowest] layer of the atmosphere.
     c) lowest
4.     The percentage of water vapor in a mass of air compared to the maximum amount of water vapor possible for air at that temperature is called_________________ ________________.
     relative humidity
5.     Clouds formed in layers are said to be: a) cumuliform b) thermal c) stratiform d) stratospheric
     c) stratiform
6.     The familiar puffy white clouds seen against a vivid blue sky are called _______________________ clouds.
     cumulus
7.     Cumulonimbus clouds are: a) high wispy clouds; b) low, dark layer clouds; c) towering thunderheads; d) stratospheric
     c) towering thunderheads
8.     Sunlight shining on raindrops produces ______________________.
     a rainbow
9.     A frontal system of heavy thunderstorms is known as a: a) thermal line; b) squall line; c) castellanus line; d) corona line.
     b) squall line
10.     A cloud that has its base on the earth's land or water surface is called _________ .
     fog
11.     Because of the way they are formed, which cloud type will remain stationary in the sky as long as the wind speed remains constant?
      altocumulus lenticularis
12.     A yellow sunset is an indicator of ______________ .
     rain
13.     A small, colored ring around the sun, caused by a cloud formed by smaller than usual water drops or ice crystals, is called a _________________ .
     corona
14.     A cirrostratus cloud layer often forms a larger ring than that in number 13. What is this larger ring called?
     halo
15.     An inversion layer of warm air lying above cool air creates ______________________ (stable or unstable) conditions.
     stable
© Educational Video Network, Inc. 2005 - www.evndirect.com
Your leading source for curriculum-based educational videos and DVDs.