Exam 19: Moisture, Clouds, and Weather

__________ forms when rain falls on subfreezing surfaces.

A single bolt of lightning produces as much power as a nuclear power plant for a few seconds.

When condensation occurs above the elevation at which air stops rising, __________ clouds form.

Monsoons blow from __________ in summer, bringing __________.

If air stops rising before it cools to its dew point:

A low-pressure region with its accompanying surface wind is called a/an __________.

When a moving mass of cool, dense air slides under a warm air mass forcing the warm air upward, this process is called __________ __________.

Rain doesn't fall from all clouds because some contain:

__________ __________ is the amount of water vapor in air relative to the maximum it can hold at a given temperature.

El Niño occurs every year.

When a mass of cool air comes in contact with warm air, the warm air rises above the warm air.

The amount of water vapor in a given volume of air divided by the maximum amount of water vapor that this air can hold is called:

When air blows against a mountainside, it is forced to rise by a process called __________ __________.

Evaporation fogs are common in late fall and early winter because the air is still warm but the water has become cool.

A high-altitude wind system traveling south from the Equator toward the South Pole would:

Water becomes __________ when it has cooled below its freezing point but remains liquid.

About one million cloud droplets must combine to form an average-size raindrop.

__________ is the horizontal movement of air in response to differences in air pressure.

El Niño is a weather pattern caused by:

A/an __________ is a small, short-lived, funnel-shaped storm that protrudes from the base of a cumulonimbus cloud.