Glaciers and Ice Caps

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How much of Earth's freshwater is locked away in glaciers and ice caps?

70%

Select all of the answers that apply. How do glaciers move?

Gravity pulls them downhill. Melted ice allows the glacier to slide forward.

Older glaciers have ____ ice crystals than younger glaciers.

Longer

Global warming _____.

causes the sea to rise, which can contaminate freshwater sources

Which of the following statements is true?

Older glaciers have longer ice crystals than younger ones.

The Arctic ice cap _____.

floats on top of the Arctic Ocean

Glaciers______

form when snow stays in the same place for a long time.

Kettle lakes form when _____.

ice chunks break off a glacier, then melt


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