E.1.1 Notes

Front

What percentage of Earth's water is freshwater?

Back

3%

Front

Which type of water reservoir contains the largest volume of fresh water?

Back

Ice sheets

Front

What are the rivers that flow into the Mississippi River called?

Back

Tributaries

Front

Why is water from an aquifer often cleaner than water from other sources?

Back

Because pollutants are filtered by rock and soil deep within Earth.

Front

What is the importance of an aquifer?

Back

It holds uncontaminated ground water for human consumption.

Front

What is a watershed?

Back

An area of land that drains into a particular water body.

Front

What is the difference between a river and a tributary?

Back

A tributary is a smaller river that flows into a larger river.

Front

What is the main source of water for aquifers?

Back

Precipitation that seeps into the ground.

Front

What role do ice sheets play in the Earth's freshwater supply?

Back

They store the largest volume of freshwater on Earth.

Front

How do pollutants affect freshwater sources?

Back

They can contaminate water, making it unsafe for consumption.