What is a glacier?
Glaciers are really heavy, large bodies of ice. They move very slowly. Sometimes glaciers only move 2 cm per year.
Glaciers are usually formed in very cold places like Antarctica and Greenland. Surprisingly, the bottom layer of glaciers isn't ice, it is a putty-like material.
Did you know?
About 10% of the Earth is covered by glaciers.
There is a glacier in Africa on top of Mount Kilimanjaro.
Global warming might melt some of the glaciers. Some scientists think increasing temperatures by 39 degrees Fahrenheit would melt all the glaciers.
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