Fresh Water/Hydrosphere Flashcard

Front

What process forms valleys by wearing away particles of rock?

Back

Erosion, specifically by rivers or glaciers, slowly over time through abrasion.

Front

What percent of total water on Earth is salt water?

Back

97%.

Front

What is the main source of Earth's fresh water?

Back

Groundwater, which makes up about 30% of fresh water.

Front

What is the process called that moves weathered rock and soil from one place to another?

Back

Erosion.

Front

What type of weathering occurs due to chemical changes in the composition of rocks?

Back

Chemical weathering.

Front

What is the term for the breaking down of rocks by physical forces?

Back

Mechanical weathering.

Front

What is the term for the accumulation of sediment in a new location?

Back

Deposition.

Front

What natural forces can cause erosion?

Back

Water, ice, wind, and gravity.

Front

What is the difference between weathering and erosion?

Back

Weathering is the breaking down of rocks, while erosion is the movement of those weathered materials.

Front

What percentage of Earth's fresh water is found in glaciers and ice caps?

Back

About 68.7%.