River Systems Flashcard

Front

What is the point where a river meets the ocean called?

Back

Mouth of River

Front

What does the Continental Divide do in North America?

Back

Separates watersheds that drain into different oceans

Front

What happens to valleys when streams move into regions with a smaller gradient?

Back

They become wider with floodplains

Front

What happens to precipitation that does not infiltrate the ground or evaporate?

Back

It flows downhill as runoff.

Front

What is the relationship between the amount of precipitation and runoff?

Back

The greater the amount of precipitation, the greater the runoff.

Front

What is a tributary?

Back

A river or stream that flows into a larger river or lake.

Front

Define watershed.

Back

An area of land that drains into a particular river or lake.

Front

What is the significance of floodplains?

Back

Floodplains are areas adjacent to rivers that are prone to flooding and are important for ecosystem health.

Front

Explain the term 'confluence'.

Back

The point where two rivers meet.

Front

What is the role of vegetation in a watershed?

Back

Vegetation helps to absorb rainfall, reduce runoff, and prevent soil erosion.