iceberg

The Iceberg

Find about icebergs here.

Icebergs come from glaciers, or large masses of slowly moving ice. In a process called calving, pieces of a glacier break off into the ocean. The pieces of ice (or icebergs), can drift for thousands of kilometres. When they reach warmer water, they melt away. Thousands of icebergs form each year in the Arctic and in Antarctica. Although icebergs are extremely heavy, they float for the same reason that an ice cube floats in a glass of water: ice is less dense, or lighter, than water.