LINKS            CHAPTER 6  HUMIDITY, SATURATION, AND STABILITY

Books                             [~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~]
Class Meetings
Course            1. The largest fresh water reservoir in the global
Description       hydrologic cycle:
Course Schedule   oceans
Grading           lakes
Learning          ice sheets and glaciers
Objectives        ground water
Photographs
Practice          2. On the continents over the course of a year, annual
Questions         precipitation _______ annual evapotranspiration.
Special Notice    equals
Student           is greater than
Responsibilities  is less than
                  is much less than
Access to Online
Daily Weather     3. Rain may
Summary and       infiltrate the soil.
Learning          run off into rivers and lakes.
Activities        evaporate.
                  some combination of the above is correct
National Weather
Service - Green   4. The saturation vapor pressure is _______ proportional
Bay               to air temperature.
                  directly
       Home       inversely
                  not

                  5. The saturation mixing ratio is _______ proportional to
                  air temperature.
                  directly
                  inversely
                  not

                  6. The mixing ratio is 10 g/kg and the relative humidity
                  is 40%. What is the saturation mixing ratio?
                  4 g/kg
                  25 g/kg
                  2.5 g/kg
                  50 g/kg

                  7. The vapor pressure is 3 mb and the saturation vapor
                  pressure is 12 mb. What is the relative humidity?
                  25%
                  100%
                  33.3%
                  2.5%

                  8. The vapor pressure is 18 mb and the saturation vapor
                  pres-sure is 18 mb. What is the relative humidity?
                  25%
                  100%
                  40%
                  6.8%

                  9. Relative humidity is _______ proportional to air
                  tempera-ture.
                  directly
                  inversely
                  not

                  10. On a clear and calm day, the relative humidity has
                  its lowest value
                  at sunrise.
                  around 3 A.M.
                  when air temperature is maximum
                  just after sunset.

                  11. The relative humidity increases when the vapor
                  pressure is constant and
                  the air temperature rises.
                   the saturation vapor pressure increases.
                  the air cools
                  None of the above is correct.

                  12. The relative humidity increases when the temperature
                  is constant and
                  the vapor pressure decreases.
                  the saturation vapor pressure increases.
                  the mixing ratio increases
                  the saturation mixing ratio increases.

                  13. As saturated (cloudy) air ascends within the
                  atmosphere,
                  its temperature rises.
                  it expands and cools
                  its relative humidity increases.
                  its saturation vapor pressure increases.

                  14. As unsaturated air ascends within the atmosphere, its
                  tem-perature
                  rises at 10 Celsius degrees per 1000 meters.
                  does not change.
                  drops at 6 Celsius degrees per 1000 meters
                  falls at the dry adiabatic lapse rate

                  15. An unsaturated air parcel at an initial temperature
                  of 5 C is forced to ascend 2500 meters. Following ascent,
                  the air parcel has a temperature of
                  5 C
                  30 C
                  -20 C
                  -10 C

                  16. The moist adiabatic lapse rate
                  is constant.
                  is about 10 Celsius degrees per 1000 meters.
                  equals the dry adiabatic lapse rate.
                  ranges from about 4 Celsius degrees per 1000 m to almost
                  9 Celsius degrees per 1000 m

                  17. Atmospheric stability can change with
                  altitude
                  time
                  location
                  any of the above is correct

                  18. Which one of the following soundings indicates an
                  atmosphere that is unstable for both cloudy and clear air
                  parcels.
                  -12 Celsius degrees per 1000 m
                  -10 Celsius degrees per 1000 m
                  +1 Celsius degree per 1000 m
                  +6 Celsius degrees per 1000 m

                  19. In an inversion, air temperature _______ with
                  increasing altitude.
                  rises
                  drops
                  does not change

                  20. A temperature inversion indicates _______ atmospheric
                  condi-tions.
                  stable
                  neutral
                  unstable



                  Score =
                  Correct answers:


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