What is Iceberg?
[[Image:Greenland Ilulissat-25.jpg|thumb|right|An iceberg]] [[Image:Iceberg.jpg|thumb|right|An iceberg might look like this.]] An '''iceberg''' is a large piece of [[ice]] floating in the [[sea]].<ref>{{Cite web|title=Common Misconceptions about Icebergs and Glaciers — Icebergs and Glaciers — Beyond Penguins and Polar Bears|url=https://beyondpenguins.ehe.osu.edu/issue/icebergs-and-glaciers/common-misconceptions-about-icebergs-and-glaciers|access-date=2020-08-16|language=en}}</ref> They are generally found in cold water near the [[North Pole|North]] or [[South Pole]]. Icebergs are especially common during [[Spring (season)|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 [[glacier]]s or [[ice shelf|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. == History == The first person to give a correct scientific explanation of this phenomenon was [[Mikhail Lomonosov]], around 1750. The density of ice is about 0.92 kg per liter, that of sea water is about 1.025 kg per liter. For this reason, 920 parts of the 1025, or about 90 percent, of the iceberg's volume need to be below the water line. Lomonosov grew up on the shore of the [[White Sea]] in the European part of [[Russia]]. He studied in [[Marburg]], and is credited with introducing the word ''iceberg'' into the [[Russian language]]. Icebergs are very dangerous to ships, and many ships have sunk after crashing into icebergs. The most famous one was [[RMS Titanic|RMS ''Titanic'']] in 1912. The largest iceberg people know about was called [[B-15]]. It broke off from the [[Antarctica|Antarctic]] [[ice shelf]] in the year 2000, and was as large as the island of [[Jamaica]] (