INTRO TO EARTH SCIENCE

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INTRODUCTION TO EARTH SCIENCE
ESCI 121
Fall 2010
Section 05

DAILY OBJECTIVES
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Here are some review questions to help you check your understanding: 


WEATHER

w   The difference between climate and weather is _____________.

Air Masses

w   The two variables that characterize an air mass are ___ and ___.

w   Fill in the blanks in the table below, giving the characteristics of these air masses, and telling where they might be found in the continental U.S.: 
 
Air Mass Symbol Characteristics Where Found
Continental Polar   Cold    

 
cT   Moist  
Maritime Tropical        

 
  Warm Dry  

w   All other things being equal, a dry air mass will be more / less dense than a moist air mass. 

w   All other things being equal, a warm air mass will be more / less dense than a cold air mass.

Clouds

w   Dew point is a measurement of       temperature / pressure / elevation.

w   For a cloud to form, the following must take place:

Step 1) Liquid water changes to a vapor (gas) state, undergoing the process of _______. 
Step 2) Condensation nuclei such as ______, ______, or salt crystals, must be present.

Step 3) Temperature of the air containing water vapor

rises / falls / remains constant,

causing... (Step 4).

Step 4) ...causing the vapor to change to tiny liquid droplets, undergoing the process of _______.  When enough of these are present, they form a cloud.
Step 5)    The tiny liquid droplets coalesce around the condensation nuclei.  When a million droplets have coalesced on a single nucleus, a _______ forms, and precipitation may follow.

w   Sketch each of the following cloud types: cirrus, cumulus, and stratus

w  When cumulus clouds acquire the gray color indicating that they contain abundant raindrops, they are called  __________________ clouds.  When stratus clouds acquire that color, they are called __________________ clouds.
 

Fronts and Precipitation

w   When warm, moist air rises, _______________ results.

w   A front is ___________________________.

w
  Name a geographic location where orographic precipitation is likely to take place.

w   Convective precipitation is most likely to take place in  summer / winter

w   Sketch a "profile" diagram illustrating a warm front, and label on the diagram the place where precipitation would occur.   

w   New this time:  Sketch a "profile" diagram illustrating a cold front, and label on the diagram the place where precipitation would occur.     


 
NEIU DEPARTMENT OF EARTH SCIENCE

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Department of Earth Science | Northeastern Illinois University

Copyright 2010 Laura L. Sanders.  Last updated December 7, 2010.