Water Cycle Review

Front

What is the water cycle?

Back

The water cycle is the continuous process by which water moves from the Earth's surface to the atmosphere and back, involving processes such as evaporation, condensation, precipitation, and infiltration.

Front

What are the main processes of the water cycle?

Back

The main processes of the water cycle include evaporation, condensation, precipitation, infiltration, and runoff.

Front

What role does the sun play in the water cycle?

Back

The sun provides the energy needed for evaporation, which is the process of water turning into vapor and rising into the atmosphere.

Front

Where does precipitation occur?

Back

Precipitation occurs when water vapor in the atmosphere condenses into droplets that become heavy enough to fall to the ground as rain, snow, sleet, or hail.

Front

What is the difference between usable water and total water on Earth?

Back

Usable water refers to the fresh water available for human consumption and use, while total water includes all water on Earth, including saltwater and frozen water.

Front

Where is most of the world's usable water found?

Back

Most of the world's usable water is found frozen in ice caps and glaciers.

Front

Why is rain from evaporated ocean water not salty?

Back

Rain from evaporated ocean water is not salty because the salt does not evaporate with the water; only the water vapor rises into the atmosphere.

Front

What is evaporation in the context of the water cycle?

Back

Evaporation is the process by which water changes from a liquid to a gas or vapor, usually due to heat from the sun.

Front

What is condensation in the water cycle?

Back

Condensation is the process by which water vapor cools and changes back into liquid water, forming clouds.

Front

What is runoff in the water cycle?

Back

Runoff is the flow of water, usually from precipitation, that moves across the ground and returns to bodies of water like rivers, lakes, and oceans.