Exam 4: Humidity, Condensation and Clouds

Instructions: Choose one answer from each pair of selections. Humid air is slightly MORE | LESS dense than dry air with the same temperature.

Instructions: Choose one answer from each pair of selections. At polar latitudes, high and middle altitude clouds are generally CLOSER TO | FURTHER FROM the ground than at tropical latitudes.

Describe lenticular clouds. Where are they frequently formed?

Instructions: Choose one answer from each pair of selections. ADVECTION | RADIATION fog forms when the wind moves warm, moist air over a sufficiently colder surface and the moist air is cooled to its saturation point.

Hot air with a low relative humidity may actually contain more water vapor than cool air with a high relative humidity.

Frost occurs when dew freezes.

What is a measure of how cool skin can become, i.e., the lowest temperature that can be reached by evaporating water into the air?

Describe the process of deposition.

Instructions: Choose one answer from each pair of selections. When air is saturated, the rate of evaporation is GREATER THAN | EQUAL TO the rate of condensation.

Which cloud is least likely to produce precipitation that reaches the ground?

Clouds that appear as bag-like sacks hanging from beneath a cloud are ____.

Transpiration from plants and evaporation from soil, lakes, and streams account for the majority of the water vapor added to the atmosphere each year.

Instructions: Choose one answer from each pair of selections. Halos are sometimes observed in thin, sheetlike, high clouds, composed of WATER | ICE particles.

Small particles of ordinary table salt are hygroscopic. What does hygroscopic mean and what is a likely natural source of salt particles?

What does it mean when air is saturated?

A warm rain falling through a layer of cold, moist air can produce ____.

Which instrument uses wet-bulb and dry-bulb temperatures to obtain relative humidity?

Exhaled breath from your mouth in cold weather produces ____.

Hail is usually associated with what cloud?

Light or moderate continuous precipitation is most often associated with ____ clouds.