Atmospheric Moisture and Precipitation

Which refers to the measure of the amount of water vapor in the air?

• condensation

• dew

• humidity

• sleet

Which is associated with low humidity?

• dry air

• warm air

• rainforest

• coastal area

Which statement accurately describes humidity?

• Humidity is a measure of dew in the air.

• Colder air promotes more evaporation.

• Cold air holds more moisture than warm air.

• Humidity refers to the amount of water vapor in the air.

Clouds are formed when

• liquid water condenses on grass and windows.

• raindrops freeze into tiny pellets and fall to Earth.

• water vapor in the air condenses to form liquid water or ice.

• sunlight causes water droplets to evaporate.

Which is one factor that affects the type of cloud that will form?

• altitude

• size of ice pellets

• color of clouds

• wind direction

Which statement describes what will most likely occur when warm air cools and the temperature drops to the dew point?

• Air will become more humid.

• Solid ice will form on leaves.

• Cumulus clouds will disappear.

• Water vapor in the air will evaporate.

Which condition is necessary for water droplets to condense and form clouds?

• rising temperatures

• dry air

• ice crystals in air

• tiny particles in air

Which describes where fog forms?

• where the atmosphere contains few particles

• where the air has very low humidity

• in the upper atmosphere

• at the ground

Which type of clouds are shown?

• cumulus

• cirrocumulus

• stratus

• cumulonimbus

Which description refers to cirrus clouds?

• form at low altitudes

• produce snow

• are wispy

• are fluffy