Water on Earth

Water on Earth

Assessment

Flashcard

Science

6th - 8th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the main source of freshwater on Earth?

Back

Glaciers and polar ice caps contain the greatest amount of Earth's freshwater.

2.

FLASHCARD QUESTION

Front

What percentage of Earth's water is saltwater?

Back

97% of Earth's water is saltwater.

3.

FLASHCARD QUESTION

Front

What is the importance of conserving water?

Back

Conserving water helps to ensure that there is enough freshwater available for all living things.

4.

FLASHCARD QUESTION

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.

5.

FLASHCARD QUESTION

Front

What is groundwater?

Back

Groundwater is water that is stored underground in soil and rock layers.

6.

FLASHCARD QUESTION

Front

Why is less than 0.3% of Earth's water drinkable?

Back

Most of Earth's water is saltwater or trapped in ice, making only a small fraction available for drinking.

7.

FLASHCARD QUESTION

Front

What human activities harm freshwater sources?

Back

Pollution, overuse, and habitat destruction are major human activities that harm freshwater sources.

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