Hydrologic Cycle

Front

What is the hydrologic cycle?

Back

The hydrologic cycle, also known as the water cycle, is the continuous movement of water on, above, and below the surface of the Earth. It involves processes such as evaporation, condensation, precipitation, infiltration, and runoff.

Front

What percent of the Earth's freshwater is available for use by humans?

Back

Less than 1%.

Front

What is percolation in the context of the hydrologic cycle?

Back

Percolation is the process of water filtering through rocks and sediments, allowing it to move into the ground.

Front

What is surface runoff?

Back

Surface runoff is water that flows across the land and enters rivers and streams, eventually flowing into lakes and the ocean.

Front

What is the role of runoff in the hydrologic cycle?

Back

Runoff is responsible for transporting pollution from farms into nearby streams, rivers, and eventually to lakes.

Front

What is infiltration?

Back

Infiltration is the process of water soaking into the ground after precipitation occurs.

Front

What is evaporation?

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?

Back

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

Front

What is precipitation?

Back

Precipitation is any form of water that falls from the atmosphere to the Earth's surface, including rain, snow, sleet, and hail.

Front

What is the significance of groundwater in the hydrologic cycle?

Back

Groundwater is water that is stored underground in aquifers and is a crucial source of freshwater for drinking and irrigation.