1 : the whole mass of air that surrounds the earth . 2 : the gas surrounding a heavenly body (as a planet) The atmosphere of Mars is made up mostly of carbon dioxide. 3 : the air in a particular place. 4 : a surrounding influence or set of conditions an atmosphere of excitement.
What do you mean by atmosphere?
An atmosphere is the layers of gases surrounding a planet or other celestial body . ... These gases are found in layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere) defined by unique features such as temperature and pressure.
What is the best definition for atmosphere?
1 : the whole mass of air that surrounds the earth . 2 : the gas surrounding a heavenly body (as a planet) The atmosphere of Mars is made up mostly of carbon dioxide. 3 : the air in a particular place. 4 : a surrounding influence or set of conditions an atmosphere of excitement.
What does the Greek word atmosphere mean?
The adjective atmospheric comes from atmosphere, which stems from the Greek root words atmos, “ steam or vapor ,” and spharia, “sphere or globe.”
What is atmosphere in one word answer?
An atmosphere is a layer or a set of layers of gases surrounding a planet . 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.
What are the important terms of atmosphere?
The atmosphere is comprised of layers based on temperature. These layers are the troposphere, stratosphere, mesosphere and thermosphere . A further region at about 500 km above the Earth’s surface is called the exosphere.
What is an example of atmosphere?
Atmosphere is defined as the area of air and gas enveloping objects in space, like stars and planets, or the air around any location. An example of atmosphere is the ozone and other layers which make up the Earth’s sky as we see it. An example of atmosphere is the air and gases contained inside a greenhouse .
What are the 5 types of atmosphere?
Earth’s atmosphere has five major and several secondary layers. From lowest to highest, the major layers are the troposphere, stratosphere, mesosphere, thermosphere and exosphere . Troposphere.
Why is the atmosphere important for humans?
The atmosphere protects us from UV and other short wavelength light that would otherwise do a lot of damage to the DNA of living organisms. ... The atmosphere is also important because it contains oxygen , which we and other living organisms breathe.
What is the main function of the atmosphere?
Atmosphere is essential for life on Earth as it supplies oxygen, water, CO 2 and some nutrients (N) to living organisms , and protects living organisms from temperature extremes and excessive UV radiation.
What is the highest level of the atmosphere?
Exosphere . The exosphere is the outermost layer of Earth’s atmosphere (i.e. the upper limit of the atmosphere). It extends from the thermopause, at the top of the thermosphere at an altitude of about 700 km above sea level, to about 10,000 km (6,200 mi; 33,000,000 ft), where it merges into the solar wind.
Why is it called atmosphere?
An atmosphere (from Ancient Greek ἀτμός (atmós) ‘vapour, steam’, and σφαῖρα (sphaîra) ‘sphere’) is a layer of gas or layers of gases that envelope a planet, and is held in place by the gravity of the planetary body .
What is the origin of the atmosphere?
When Earth formed 4.6 billion years ago from a hot mix of gases and solids, it had almost no atmosphere. The surface was molten. As Earth cooled, an atmosphere formed mainly from gases spewed from volcanoes . ... After about half a billion years, Earth’s surface cooled and solidified enough for water to collect on it.
What is an example of atmosphere in literature?
Flaming candles, the ‘set’ of the skeletons dining, and so on all conjures a specific atmosphere. We’re usually going for spooky around Halloween, but in literature, atmosphere refers to the feeling, emotion, or mood a writer conveys to a reader through the description of setting and objects .
What are four uses of atmosphere?
the atmosphere help us to protect from the harmful rays of the sun . the earth atmosphere contains water oxygen and carbon dioxide. life on Earth needs the atmosphere. the atmosphere of earth stop the rays which can cause eye problems and skin cancer.
