The atmosphere does not escape away from the earth. Give reason.
Answers
Answer:
Earth’s atmosphere is only 1/1,200,000 the mass of Earth itself. So it is a very thin skin surrounding our planet. How does Earth hold on to this thin skin of atmosphere?
The answer is gravity – the same force that keeps us anchored to Earth.
And yet, although you might not realize it or think about it, Earth does continually lose some of its atmosphere to space. This loss occurs in the upper atmosphere, over billion-year time scales.
Molecules in our atmosphere are constantly moving, spurred on by energizing sunlight. Some move quickly enough to escape the grip of Earth’s gravity. The escape velocity for planet Earth is a little over 11 kilometers per second – about 25 thousand miles an hour. If Earth were much less massive – say, as massive as Mars – gravity’s grip would be weaker. That’s one reason why Mars lost most of its original atmosphere.
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Answer:
It's a good thing these gases are there. Our atmosphere protects the Earth from the harsh rays of the sun and reduces temperature extremes, acting like a duvet wrapped around the planet. ... As humans release more carbon dioxide into the atmosphere, Earth's greenhouse effect gets stronger, according to NCAR