Existing comment:
Iceberg Facts:
* The average iceberg is 70,000 cubic feet (1,982 cubic meters) -- about 840,000 ice cubes.
* Seven-eights of an iceberg's mass is below the waterline.
* Melting an average iceberg takes the specific heat of 2.4 million gallons (9.1 million liters) of gasoline.
* It takes 1,900 tons (1,724 metric tons) of TNT to blow up an average iceberg.
* The tallest known iceberg in the North Atlantic was 550 feet (168 meters) high, sighted off Greenland in 1967.
* Ice islands from Antarctica can reach the size of Rhode Island.
* Icebergs float because they are fresh water, which is less dense than salt water. Sea ice floats because water is densest just about its freezing point.
* Meltwater flowing off icebergs sustains whole colonies of krill (Arctic shrimp), making them a magnet for fish and whales and thus for seals and polar bears.
* Icebergs are most dangerous to ships when they turn over in the water. Don't go near them in a small boat! |