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Icebergs are huge sheets of ice that caused the tragedy of the Titanic, etc.

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An iceberg is a floating block of ice with an irregular shape. The ice was formed by frozen water moving downhill on a continent -- slowly, but rather like a river -- all the while compacting the minerals out of the ice and being built up increasing its thickness year after year by precipitation.

When the ice sheet 'flows' into the sea and part of the ice sheet floats against the tides, any weak spot in the ice sheet causes one of these blocks to 'calve' off the sheet -- separate -- and float into the sea.

Most of an iceberg floats underwater, hidden from view. Icebergs as large as some US states have been known to calve off ice sheets in the Antarctic.
An iceberg is a chunk of a glacier that has broken away and floats free in the ocean.

An iceberg is a large chunk of ice broken off from a glacier or from an ice shelf such as those in Antarctica. They can be very large. The Titanic hit a towering iceberg, but the damage was done below the surface. Only 10 percent of an iceberg sits above the surface of the water.

The largest recorded iceberg was 28 miles wide and 208 miles long.

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9y ago

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