Iceberg

An iceberg is a large piece of ice floating in the sea.^[1] They are generally found in cold water near the North or South Pole. Icebergs are especially common during spring, when ice has begun to melt.

About 90% of an iceberg is below the water line and ten percent above. Icebergs break off from larger structures made of ice, like glaciers or ice shelves. These are formed by snowfall in very cold places where it will not melt in the summer. The snow builds up and compacts into ice. This is gradually pulled downhill by gravity and into the sea. The ice then falls off and makes icebergs. The icebergs can drift in the sea for years before they have melted completely.

1. ↑ "Common Misconceptions about Icebergs and Glaciers — Icebergs and Glaciers — Beyond Penguins and Polar Bears". Retrieved 2020-08-16.