LINKS                        CHAPTER 5  AIR PRESSURE

Books                             [~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~]
Class Meetings
Course            1. As colder air moves into our locality, the air
Description       pressure usually
Course Schedule   falls.
Grading           remains unchanged.
Learning          rises
Objectives
Photographs
Practice          2. The portion of the atmosphere's mass that is below the
Questions         600 mb level (that is, the altitude where the air
Special Notice    pressure is 600 mb) is
Student           0.6
Responsibilities  0.4
                  0.5
Access to Online  0.3
Daily Weather
Summary and       3. As a storm approaches your locality, the air pressure
Learning          ten-dency is usually
Activities        upward.
                  unchanged.
National Weather  downward
Service - Green
Bay
                  4. At the same temperature, humid air is _______ dry air.
       Home       denser than
                  as dense as
                  less dense than

                  5. Which one of the following air masses exerts the
                  greatest air pressure at Earth's surface?
                  warm and dry
                  warm and humid
                  cold and dry
                  cold and humid

                  6. The molecular weight of water vapor is _______ the
                  average molecular weight of dry air.
                  greater than
                  about the same as
                  less than

                  7. Radiational cooling of air causes air density to
                  increase
                  decrease.

                  8. When air is heated within the atmosphere, air density
                  increases.
                  decreases
                  does not change.

                  9. When air pressure readings at Denver are reduced to
                  sea level, air pressure is adjusted
                  upward
                  downward.

                  10. An aneroid barometer is usually _______ accurate and
                  _______ portable than a mercury barometer.
                  less...less
                  less...more
                  more...less
                  more...more

                  11. Earth's atmosphere has a well-defined top at
                  the tropopause.
                  the stratopause.
                  the mesopause.
                  none of these is correct

                  12. In a millionth of a second, _______ gas molecules
                  bombard every square centimeter of the Earth's surface.
                  hundreds of
                  thousands of
                  millions of
                  billions of

                  13. Air pressure varies with
                  time.
                  altitude.
                  location on the Earth's surface.
                  all of the above are correct

                  14. An isobar joins localities reporting the same
                  air pressure
                  temperature
                  humidity
                  rainfall

                  15. After reducing barometer readings to sea level, air
                  pressure varies with time because of
                  changes in air temperature.
                  changes in water vapor concentration of air.
                  convergence and divergence of the wind.
                  all of the above are correct

                  16. In the thermosphere, average kinetic molecular energy
                  is relatively _______ and the total kinetic molecular
                  energy is relatively _______.
                  low...low
                  high...high
                  high...low
                  low...high

                  17. The top of Earth's atmosphere
                  is the tropopause
                  is the stratopause
                  is in the homosphere
                  cannot be determined precisely

                  18. The standard atmosphere features an average sea-level
                  air pressure of
                  1013.25 mb.
                  101.325 kiloPascals.
                  1013.25 hectoPascals.
                  all of the above are correct

                  19. The standard atmosphere is a(n) _______
                  representation of the real atmosphere.
                  precise
                  approximate

                  20. The rate at which air pressure drops with altitude
                  is fixed and constant.
                  is greatest in the stratosphere.
                  is greatest close to the Earth's surface
                  is greatest in the heterosphere.



                  Score =
                  Correct answers:


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                      Web Site created by David Dimmer
                     Last Updated on December 11, 1998