ATMOSPHERIC MOISTURE
PRACTICE TEST
Question 1: Which phase change transfers water from a liquid surface into the
atmosphere as water vapor?
Choices:
1) Condensation 2) Evaporation 3) Deposition 4) Freezing
Correct Answer: Evaporation
Explanation: Evaporation is the change from liquid water to water vapor. It requires energy and is a major pathway by which moisture enters the atmosphere.Page 1
Question 2: During which phase change is latent heat released to the surrounding air?
Choices:
1) Evaporation 2) Sublimation 3) Condensation 4) Melting
Correct Answer: Condensation
Explanation: Condensation changes water vapor to liquid water and releases latent heat to the surroundings. Evaporation, sublimation, and melting require energy input.
Question 3: What is sublimation in the atmospheric water cycle?
Choices:
1) A direct change from ice to water vapor 2) A direct change from water vapor to ice 3) A change from liquid water to ice 4) A change from water vapor to liquid water
Correct Answer: A direct change from ice to water vapor
Explanation: Sublimation is the direct phase change from solid water to water vapor without passing through the liquid state.Page 2
Question 4: A �eld of wet vegetation loses water both from leaf surfaces and from the ground. What combined process describes this moisture transfer to the atmosphere?
Choices:
1) In�ltration 2) Evapotranspiration 3) Deposition 4) Coalescence
Correct Answer: Evapotranspiration
Explanation: Evapotranspiration combines evaporation from surfaces with transpiration from plants, transferring water vapor to the atmosphere.Question 5: Which quantity is de�ned as the ratio of the actual water vapor pressure to the saturation water vapor pressure at the same temperature, expressed as a percentage?
Choices:
1) Speci�c humidity 2) Mixing ratio 3) Relative humidity 4) Dew-point depression
Correct Answer: Relative humidity
Explanation: Relative humidity compares actual vapor pressure with saturation vapor pressure at the same temperature and is expressed as a percent.Page 3