CH. 18 Moisture, Clouds, & Precipitation

Of the following, which contains more water vapor?

• cold air

• warm saturated air

Which gas that is the most important in understanding cloud formation?

• oxygen

• ozone

• carbon dioxide

• wator vapor

If the water vapor content of air remains constant, lowering air temperature causes a(n) ____________

• decrease in relative humidity

• increase in relative humidity

• temperature inversion

When the dry and wet bulbs read the same on the psychrometer is rain likely?

• YES

• NO

Which of the following occurs when air is compressed?

• a. air temperature rises

• b. air molecules move faster

• c. air temperature cools

• d. both a and b

Which of the following is an example of condensation nuclei?

• smoke

• dust

• salt particles

• all of the above

What 2 gases contribute to the greenhouse effect? CHOOSE 2

• nitrogen

• carbon dioxide

• nitrogen

• water vapor

What type of clouds are these?

• cumulonimbus

• cirrus

• stratus

What type of cloud is this?

• stratus

• cumulus

• cirrus

• alto

What type of clouds are these?

• stratus

• cirrus

• cumulus