Lesson 2: Water Cycle

Multiple Choice

Which of the following statements about water on Earth is correct?

• About 97% of Earth's water is freshwater.

• Saltwater is suitable for drinking without treatment.

• Only about 3% of Earth's water is freshwater.

• Most of Earth's water is found in rivers and lakes.

Multiple Choice

Which of the following contains the largest percentage of Earth's freshwater?

• Surface water (rivers, lakes, wetlands)

• Groundwater

• Glaciers and ice caps

• Atmosphere

Multiple Choice

Which of the following terms refers to the process by which water changes from a liquid to a gas?

• Evaporation

• Condensation

• Precipitation

• Run off

Multiple Choice

What is the process called when water vapor cools and changes back into tiny water droplets, forming clouds?

• Evaporation

• Condensation

• Precipitation

• Transpiration

Multiple Choice

Which sphere does transpiration primarily connect with the water cycle (hydrosphere)?

• Lithosphere

• Atmosphere

• Biosphere

• Cryosphere

Multiple Select

Which of the following are ways water moves in the water cycle?

• Evaporation

• Condensation

• Transpiration

• Photosynthesis

Multiple Choice

What is the main difference between saltwater and freshwater on Earth?

• Saltwater is found in oceans and is not suitable for drinking, while freshwater is found in rivers, lakes, glaciers, underground, and in the atmosphere and is suitable for drinking.

• Saltwater is only found underground, while freshwater is only found in the atmosphere.

• Saltwater can be used for farming without treatment, while freshwater cannot.

• Freshwater covers about 97% of Earth's surface, while saltwater covers only 3%.