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Question
The region of Earth's upper atmosphere that extends from about 60 km (37 mi) to 1,000 km (620 mi) altitude is called __________.
The region of Earth's upper atmosphere that extends from about 60 km (37 mi) to 1,000 km (620 mi) altitude is called __________.
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Solution
The correct option is B Ionosphere
Ionosphere lies beyond the ozonosphere at height of about 60 km above the earth's surface. In this layer temperature again starts rising with altitude. Here density of air is very low and the gases present is very small. At this level ionization of atmosphere begins to occur by the impact of cosmic rays. Radio waves transmitted from the earth are reflected back to the earth from this layer.
Ionosphere lies beyond the ozonosphere at height of about 60 km above the earth's surface. In this layer temperature again starts rising with altitude. Here density of air is very low and the gases present is very small. At this level ionization of atmosphere begins to occur by the impact of cosmic rays. Radio waves transmitted from the earth are reflected back to the earth from this layer.
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