Q-2 Write the answers in short.
1. What percentage of the earth’s surface is covered by lithosphere?
2. Up to how many kms from the earth’s surface does the atmosphere extends?
3. What are the parts with large reservoirs in hydrosphere called ?
4. Which gas absorbs the ultraviolet rays of the Sun ?
Answers
1. The oceanic lithosphere covers approximately 60% of the Earth's surface. Well-constrained measurements of the seismic velocity structure of the crust and upper mantle beneath the ocean floor are sparse.
2. The atmosphere extends from the Earth's surface (commonly called the atmospheric boundry layer) to an altitude of about 110 miles (660 km). The atmosphere is divided into layers based on how the temperature varies with altitude.
3. Where are the storage places or reservoirs for the Earth's water? Oceans, rivers, glaciers, aquifers/ground water, atmosphere, and biosphere. Oceans are the largest reservoir. Frozen hydrosphere is the largest reservoir of fresh water, but ground water is the largest AVAILABLE source of fresh water.
4. Ozone in the lower part of the atmosphere acts as a greenhouse gas and is a major pollutant. Higher up, in the stratosphere, the ozone layer absorbs solar ultra-violet radiation and affects how much of the Sun's heat is radiated back into space
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Answer:
1. the percentage of the earth surface is covered by lithosphere is 60%
2.the earth surface the atmosphere extends is 630,000 kilometers.
3.These water storage areas are most commonly known as reservoirs. Natural reservoirs include oceans, glaciers and other bodies of ice, groundwater, lakes, soil moisture, wetlands, living organisms, the atmosphere, and rivers. Collectively, all water storage areas make up the hydrosphere.
4.Ozone gas absorbs the ultraviolet rays of the Sun