When do the oceans freeze?

In Antarctica and the Arctic, the oceans freeze because the temperatures are so low. Seawater, unlike fresh water, continues to increase in density as its temperature decreases towards freezing point (about -1.8 ). In fact Antarctica contains 90 per cent of all the ice on the Earth. Scientists have calculated that should all this ice melt, sea levels would rise by 60 m causing world-wide flooding. An accumulation of sea ice can cause an iceberg which floats in the sea because it is less dense than water.

Fact File:

Over 360 million square kilometres of the Earth’s surface area are covered by oceans and seas, with the Pacific accounting for nearly 36% of the total.


Picture Credit : Google