how would you define the term atmosphere
Answers
Answer:The earth is surrounded by a layer of gas called the
atmosphere. This thin blanket of air is an integral
and important aspect of the planet. It provides us with
the air we breathe and protects us from the harmful
effects of sun’s rays.
The atmosphere extends up to a height of about
1,600 kilometres. The atmosphere is divided into five
layers based on composition, temperature and other
properties. These layers starting from earth’s surface
are called the troposphere, the stratosphere, the
mesosphere, the thermosphere and the exosphere.
The atmosphere is composed mainly of nitrogen and
oxygen, which make up about 99 per cent of clean,
dry air. Nitrogen 78 per cent, oxygen 21 per cent and
other gases like carbondioxide, argon and others
comprise 1 per cent by volume
Explanation:
Answer:
An atmosphere (from Ancient Greek ἀτμός (atmos), meaning 'vapour', and σφαῖρα (sphaira), meaning 'ball' or 'sphere') is a layer or a set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body. An atmosphere is more likely to be retained if the gravity it is subject to is high and the temperature of the atmosphere is low.
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