SCIENCE
EARTH SCIENCE
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Detailed explanation-1: -Icebergs that drift into warmer waters eventually melt. Scientists estimate the lifespan of an iceberg, from first snowfall on a glacier to final melting in the ocean, to be as long as 3, 000 years.
Detailed explanation-2: -Despite their size and weight, icebergs float on water because they have a lower density than the surrounding water. In fact, the visible part of icebergs that we see comprises only 10% of the total iceberg. How Far Can Icebergs Float? Icebergs can float on water for up to six years.
Detailed explanation-3: -The age of the oldest Alaskan glacier ice ever recovered (from a basin between Mt. Bona and Mt. Churchill) is about 30, 000 years old.
Detailed explanation-4: -The largest iceberg reliably assessed using satellite imagery is iceberg B15, which calved from Antarctica’s Ross Ice Shelf in March 2000 and according to NASA measured approximately 300 km long by 40 km wide (186 x 25 mi), with a surface area of 11, 000 km2 (4, 250 sq mi).