SCIENCE
EARTH SCIENCE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
2/10
|
|
|
4/10
|
|
|
6/10
|
|
|
9/10
|
Detailed explanation-1: -Icebergs are very dangerous for ships as icebergs are huge masses of ice floating in the sea with a density of 0.917 g cm-³ i.e 9/10 portion is below water and only 1/10 portion of it is above the surface of water.
Detailed explanation-2: -Ninety percent of an iceberg is below the waterline. U.S. Geological Survey.
Detailed explanation-3: -Ice has a slightly lower density than seawater, so we see ice floating above the surface of oceans. However, because the difference in relative density between ice and sea water is small, only some of the iceberg floats above the water. In fact, on average only 1/10th of an iceberg is above the surface of the water.
Detailed explanation-4: -Icebergs float on the ocean with only about 10% of their mass appearing above the ocean; the remaining 90% is concealed beneath the waves.
Detailed explanation-5: -Icebergs may reach a height of more than 100 metres (300 ft) above the sea surface and have mass ranging from about 100, 000 tonnes up to more than 10 million tonnes.