Section 1. True/False (5 pts. each)

1. Atmospheric pressure always decreases with height.
   True False
   

2. Winds are currents of air that are caused by the rotation of the Earth about its axis.
   True False
   

3. The amount of water vapor that a given parcel of air can hold depends on its temperature.
   True False
   

4. Infrared and visible satellite photographs provide a way of determining cloud thickness and altitude.
   True False
   

5. Your body shivers when you feel cold because it is trying to reduce the amount of heat being lost to the environment.
   True False
   

6. The human body cools itself by evaporating water from the skin's surface.
   True False
   

7. Clouds are conglomerates of water vapor suspended in the air.
   True False
   

8. Stratus-type clouds can occur at all levels and are caused by a general lifting due to air convergence.
   True False
   

   Section 2. Multiple Choice Questions (5 pts. each)

9. When the air is saturated, which of the following statements is not correct?
   the relative humidity is 100%
   the air temperature equals the dew point temperature
   an increase in temperature will cause condensation to occur
   a decrease in temperature will cause condensation to occur
   

10. Relative humidity changes with:
    addition of water vapor in the air
    decreases in temperature
    increases in temperature
    removal of water vapor from the air
    all of the above
    

11. Particles that serve as surfaces on which water vapor may condense are called:
    hydrophobic nuclei
    nacreous nuclei
    condensation nuclei
    scud
    

12. Which association is not correct?
    cirrocumulus -- high cloud
    cumulus -- cloud of vertical extent
    altostratus -- high cloud
    stratus -- low cloud
    

13. The three forces that can act on an air parcel away from the influence of the Earth's surface are:
    Coriolis, pressure gradient, and frictional force
    Coriolis, temperature gradient, and frictional force
    Pressure gradient, Coriolis, and centrifugal force
    Pressure gradient, centrifugal, and frictional force
    Pressure gradient, temperature gradient, and Coriolis force
    

14. If the weather stations at Tucson and Phoenix report the same sea-level pressure at a given time, then it will be true to say that:
    the station pressure in Tucson and Phoenix are the same
    the station pressure in Tucson is lower than that in Phoenix
    the station pressure in Tucson is higher than that in Phoenix
    the measurement from one of these stations is probably wrong
    

    [Hint: Tucson's elevation is higher than that of Phoenix]
    

15. Lines of equal pressure on a weather chart are called:
    isotherms
    streamlines
    isoplets
    isobars
    

16. The heat index takes into account
    the temperature and humidity of the air
    the temperature and pressure of the air
    the temperature of the air and its wind speed
    the temperature of the air and the cloud types present
    

17. Damage to structures inflicted by tornadoes can be caused by:
    flying debris
    the tornado's high winds
    the drop in air pressure as a tornado moves overhead
    the drop in air pressure above a roof as high winds blow over it
    all of the above
    

18. The main source of energy for a hurricane is:
    upper-level jet stream
    rising of warm air and sinking of cold air in the vicinity of weather fronts
    warm ocean water and release of latent heat of condensation
    ocean currents and tides
    

19. Which of the following areas in the United States would be most likely to experience thunderstorms, hurricanes and tornadoes during the course of one year?
    Pacific Coast states
    New England states
    Gulf Coast States
    Great Plains states
    

20. Most of the destruction caused by a hurricane is due to:
    high winds
    flooding
    tornadoes
    hail
    

Short Answer Questions (10 pts. each) - Note: These cannot be submitted!!!

1. What symptoms does a person suffering from heat stroke experience? What should you do to help this person while you wait for help to arrive?
   

2. Hurricane-related losses have increased dramatically during the last few decades. List and explain the three main factors that have contributed to this increase.
   

3. What is the classification system for tropical cyclones and what is it based on?
   

4. Name three processes that cause the air to lift and might generate clouds.
   

5. On the map of the United States below mark and label
   

   1. two regions where tornados are most likely to occur.

   2. two regions where hurricanes are most likely to occur.

   3. one region where thunderstorms are unlikely to occur.

      

Answers: 1.T, 2.F, 3.T, 4.T, 5.F, 6.T, 7.F, 8.T, 9.D, 10.E, 11.C, 12.C, 13.C, 14.B, 15.C, 16.A, 17. E., 18.C, 19.C, 20.B.