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