Phase Changes of Water

Which phase change gains (absorbs) the most heat?

• Vaporization

• Condensation

• Freezing

• Sublimation

Which phase change gains (absorbs) the least heat?

Which phase change releases (loses) the most heat?

• Condensation

• Melting

• Sublimation

• Evaporation

Which phase change releases (loses) the least heat?

• Freezing

• Condensation

• Deposition

• Sublimation

Evaporation is a ________ process.

• cooling

• heating

• neutral

• insulating

When the air warms up, does the amount of water vapor it can hold increase or decrease?

• increase

• decrease

• stay the same

• disappear

Which can hold more water vapor, air that is 50°F or air that is 60°F?

• 60°F

• 50°F

• Both hold the same amount

• Neither can hold water vapor

Explain why colder air cannot hold as much water vapor.

• Colder air cannot hold as much water vapor because it has higher density, higher pressure, and lower temperature, which reduces its capacity to hold water vapor.

• Colder air cannot hold as much water vapor because it has lower density, higher temperature, and lower pressure, which increases its capacity to hold water vapor.

• Colder air cannot hold as much water vapor because it has higher density, higher temperature, and higher pressure, which increases its capacity to hold water vapor.

• Colder air cannot hold as much water vapor because it has lower density, lower pressure, and higher temperature, which reduces its capacity to hold water vapor.

Which of the following factors increases the rate of evaporation as shown in the graph? (Refer to the graph labeled 'Temperature')

• Temperature

• Humidity

• Wind

• Surface Area

Which of the following factors decreases the rate of evaporation as shown in the graph? (Refer to the graph labeled 'Humidity')

• Temperature

• Humidity

• Wind

• Surface Area