Ch.8 Practice Test

In the water cycle, what falls from the clouds in the form of rain or snow?

• Water vapor

• Precipitation

• Evaporation

• Condensation

What is the process by which water returns to the atmosphere as vapor?

• Condensation

• Precipitation

• Evaporation

• Freezing

What does water vapor in the atmosphere form to create clouds?

• Ice

• Rain

• Condensation

• Snow

Which type of air can hold more water vapor?

• Cool air

• Warm air

• Dry air

• Cold air

At 10°C, if 1 cubic meter of air can hold 8 grams of water vapor and the air has 2 grams of vapor, what is the relative humidity?

• 25%

• 50%

• 75%

• 100%

What is the process by which water vapor becomes liquid water?

• Evaporation

• Condensation

• Precipitation

• Sublimation

What is a measure of the amount of water vapor in the air?

• Psychrometer

• Humidity

• Relative humidity

• Temperature

What is an instrument for measuring relative humidity?

• Thermometer

• Barometer

• Psychrometer

• Hygrometer

What is a percentage comparing the amount of water vapor in the air to the maximum amount the air can hold at a particular temperature?

• Humidity

• Relative humidity

• Dew point

• Saturation

Which two conditions are required for cloud formation?

• high humidity and warm temperatures

• high humidity and cool temperatures

• warm temperatures and the presence of particles

• cool temperatures and the presence of particles