Monday 9 May 2011

Amazing Facts about Iceberg .

An Iceberg is a large piece of ice that has broken away from a glacier or ice shelf.In the North Atlantic most came from Greenland glaciers ,and in the South Atlantic from Antarctica .


*The word iceberg probably comes from the Dutch ijsberg or ice hill.
*Icebergs float because they are made of fresh water , which is less dense than sea water .
*The tallest Iceberg measured was 168m(551 ft)high .It was seen in 1958 off Greenland and was as tall as a 50-storey skyscraper .
*Seven-eights of an iceberg is below the surface of the sea,hence the expression"the tip of the iceberg" which means that more is hidden that can be seen .
*Icebergs less than 1m high and 5m wide are known as growlers because of the noise they make .
*Icebergs larger than growlers are called bergs bits , then they are graded small , medium , large or very large.very large icebergs are those measuring more than 75m high and 213m wide .
*One of the biggest icebergs of recent times , known as B-15, broke away from the ross ice shelf , Antarctica , in March 2000.It had an average length of 295 km and width of 37 KM , making it about the size of Jamaica .
*About 10,000 to 15,000 new icebergs are formed every year .This process is called "Calving".
*The air trapped in icebergs is"harvested"and sold for use in drinks.It may be 2000 years old.
*At least 500 incidents have been recorded of ships striking icebergs .The worst disaster involving an iceberg happened when the Titanic struck one on April 14 1912 and 1503 people died.


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