Why is the Earth called a ‘blue planet’ especially when viewed from space? (HOTS)
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It is called as a blue planet because earth contains 71% of water as in seas and oceans
as water seems to be blue so when astronauts see it from space it seems to be blue in colour
as water seems to be blue so when astronauts see it from space it seems to be blue in colour
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Answer:
The Earth called a ‘blue planet’ especially when viewed from space because "three-fourth" or "71 percent" of the earth’s surface is covered with water. So, when our planet is viewed from the space it looks blue. Approximately "97 percent" of the water is in the oceans. The remaining "3 percent" is the form of rivers, glaciers, lakes, ground water ,etc. The water that is present in oceans is saline or salty water and hence is unfit for "human consumption". Water present in glaciers is also unfit for consumption as it is frozen. Only the water that is present in rivers, lakes, ground water is potable or drinking water.
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