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Etymology
The word iceberg is a partial loan translation from Dutch ijsberg, literally meaning ice mountain, cognate to Danish Isbjerg, Swedish Isberg, Low Saxon Iesbarg and German Eisberg
Overview
Because the density of pure ice is about 920 kg/m³, and that of sea water about 1025 kg/m³, typically only one-tenth of the volume of an iceberg is above water. The shape of the remainder under the water can be difficult to surmise from looking at what is visible above the surface. This has led to the expression "tip of the iceberg", generally applied to a problem or difficulty, meaning that the visible trouble is only a small manifestation of a larger problem.
Icebergs generally range from 1 to 75 meters (3–250 ft) above sea level and weigh 100,000 to 200 000 tonnes. The tallest known iceberg in the North Atlantic was 168 meters (550 ft) above sea level, making it the height of a 55-story building. Despite their size, the icebergs of Newfoundland move an average of 17 kilometers a day (10 mi). These icebergs originate from the glaciers of western Greenland, and may have an interior temperature of -15 to -20°C (5 to -4 °F).Canadian Geographic Facts on Icebergs URL accessed December 20, 2006.
Though usually confined by winds and currents to move close to the coast, the largest icebergs recorded are calved, or broken off from, the Ross Ice Shelf of Antarctica. Iceberg B-15, photographed by satellite in 2000, measured 295 km long and 37 km wide (183-23 mi), with a surface area of 11,000 km² (4,250 mi²). The mass was estimated around three billion tonnes.
When an iceberg melts, it makes a fizzing sound called "Bergie Seltzer." This sound is made when compressed air bubbles trapped in the iceberg pop. The bubbles come from air trapped in snow layers that later become glacial ice.
Ice campers who camp on top of flat or hollowed icebergs are known as icebergers.
Size

Shape
In addition to the above size classification, there is also a type of classification based on shape. The two basic types of iceberg forms are tabular and non-tabular. Tabular icebergs have steep sides and a flat top, much like a plateau, with a length-to-height ratio of more than 5:1.Clarification on the Sizes and Shapes of Icebergs URL accessed December 20, 2006. Non-tabular icebergs have different shapes, and include:































