Puzzling Weather

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Icebergs are blocks of fresh-water ice that break off, called "calving", from glaciers and float out to sea. Icebergs are found in both the Arctic and Antarctic regions but differ in form and size from each region. Icebergs in the Arctic regions are formed from mountain glaciers and are typically high and narrow. Called castle bergs, the above-water shapes resemble towers.

In the Antarctic, large, and sometime enormous, flat-topped chunks of ice break off off ice shelves and are called tabular bergs. The Arctic produces 10,000 to 50,000 icebergs annually and normally have a four-year life-span.

To discover about icebergs, go to JetStream - an Online School for Weather.

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