What Does Exosphere Mean

What does the name exosphere mean?

The exosphere is the outermost layer of our atmosphere. “Exo” means outside and is the same prefix used to describe insects like grasshoppers that have a hard shell or “exoskeleton” on the outside of their body. The exosphere is the very edge of our atmosphere.

What is the definition of exosphere in geography?

exosphere. / (ˈɛksəʊˌsfɪə) / noun. the outermost layer of the earth’s atmosphere. It extends from about 400 km above the earth’s surface.

What is the exosphere known for?

Although the exosphere is the most distance layer of earth’s atmosphere it is the layer that is the planet’s first line of defense against the sun’s rays. It is also the first layer to come into contact and protect the earth from meteors asteroids and cosmic rays.

What is another name for exosphere?

Exosphere Synonyms – WordHippo Thesaurus.

What is another word for exosphere?
aerospace atmosphere
stratosphere thermosphere
troposphere upper atmosphere
air ether
aerosphere airspace

What is the pressure of the exosphere?

about 0.0007 atmospheres

The exosphere’s composition varies from oxygen carbon dioxide hydrogen and helium at its base to just hydrogen and helium in the outer limits. The exosphere’s pressure is about 0.0007 atmospheres at its base to virtually nothing in the outer reaches.

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What is the line between Earth and space?

In its simplest form the Kármán Line is the boundary between Earth’s atmosphere and outer space. It exists between Earth’s Mesosphere and Thermosphere but it’s often not brought up when discussing the various layers of the atmosphere.

What is the best definition of exosphere?

Definition of exosphere

: the outer fringe region of the atmosphere of the earth or a celestial body (such as a planet)

Where is the exosphere?

Earth’s atmosphere
The exosphere is the outermost layer of Earth’s atmosphere (i.e. the upper limit of the atmosphere) and extends from the exobase which is located at the top of the thermosphere.

Does the moon have an exosphere?

Mercury and several large natural satellites such as the Moon and three Galilean satellites of Jupiter (all except Io) have exospheres without a denser atmosphere underneath referred to as a surface boundary exosphere.

What’s after the exosphere?

The layer directly below the exosphere is the thermosphere the boundary between the two is called the thermopause. The bottom of the exosphere is sometimes also referred to as the exobase. The altitude of the lower boundary of the exosphere varies.

What are 5 facts about the exosphere?

10 Facts about Exosphere
  • Earth atmosphere is divided into many distinct layers. …
  • The exosphere is the most outermost layer of earth’s atmosphere.
  • This layer start at 500 km above the earth’s surface and goes about 10000 KM.
  • The air is extremely thin in exosphere.

What is the relationship between temperature and altitude of troposphere?

Temperature varies with altitude as follows: In the troposphere temperature decreases as altitude increases. In the stratosphere temperature generally increases as altitude increases due to the increasing absorption of ultraviolet radiation by the ozone layer.

What is in the thermosphere?

In the upper thermosphere atomic oxygen (O) atomic nitrogen (N) and helium (He) are the main components of air. Much of the X-ray and UV radiation from the Sun is absorbed in the thermosphere. When the Sun is very active and emitting more high energy radiation the thermosphere gets hotter and expands or “puffs up”.

What is in the ionosphere?

The ionosphere is a shell of electrons and electrically charged atoms and molecules that surrounds the Earth stretching from a height of about 50 km (30 mi) to more than 1 000 km (600 mi). It exists primarily due to ultraviolet radiation from the Sun.

What’s another word for convection?

Find another word for convection. In this page you can discover 13 synonyms antonyms idiomatic expressions and related words for convection like: oscillation evaporation convective upwelling radiative convecting magnetic field flux ionosphere and boundary layer.

What is the temperature of exosphere?

Temperature of Exosphere: The temperature range of the exosphere can reach up to 2 700 degrees Fahrenheit (1 500 degrees Celsius) in the uppermost atmosphere as the thin air transmits little heat.

What is the greenhouse effect?

The greenhouse effect is a process that occurs when gases in Earth’s atmosphere trap the Sun’s heat. This process makes Earth much warmer than it would be without an atmosphere. The greenhouse effect is one of the things that makes Earth a comfortable place to live.

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Why exosphere is the hottest layer?

The exosphere is almost a vacuum. The “air” is very very thin there. When air is thin it doesn’t transfer much heat to objects in the air even if the air is very very hot. … The particles in the exosphere are moving very quickly so the temperature there is quite hot.

Where does the Earth end?

According to a paper that was published in the Journal of Geophysical Research-Space Physics the border between the two—the so-called Karman line—sits 73.2 miles (188 kilometers) above Earth’s surface.

Where does space end?

Interplanetary space extends to the heliopause whereupon the solar wind gives way to the winds of the interstellar medium. Interstellar space then continues to the edges of the galaxy where it fades into the intergalactic void.

What altitude does gravity stop?

Near the surface of the Earth (sea level) gravity decreases with height such that linear extrapolation would give zero gravity at a height of one half of the Earth’s radius – (9.8 m·s2 per 3 200 km.)

How do you use the word exosphere in a sentence?

the outermost atmospheric layer.
  1. This region is called exosphere.
  2. The presence of the moon’s exosphere was confirmed by instruments on the Cassini probe which orbits Saturn and its moons.
  3. Last is the exosphere which is outermost layer of the atmosphere.

How far is the tropopause above sea level?

The troposphere extends upward to about 10 km (6.2 miles or about 33 000 feet) above sea level. The height of the top of the troposphere varies with latitude (it is lowest over the poles and highest at the equator) and by season (it is lower in winter and higher in summer).

What is the exosphere quizlet?

Exosphere. The outer layer of the thermosphere extending outward into space. Exosphere-altitude.

What color is the exosphere?

Solar radiation simply passes through the exosphere with little to no deflection refraction dispersion or scattering that is why the exosphere has no color.

How far is the exosphere from Earth?

6 200 miles

Exosphere. This is the outermost layer of the atmosphere. It extends from the top of the thermosphere to 6 200 miles (10 000 km ) above the earth.

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How tall is the exosphere?

The exosphere is the outermost layer of the Earth’s atmosphere. It starts at an altitude of about 500 km and goes out to about 10 000 km. Within this region particles of atmosphere can travel for hundreds of kilometers in a ballistic trajectory before bumping into any other particles of the atmosphere.

Is there gravity in the exosphere?

Gravity pulls the majority of the molecules in the exosphere down towards Earth’s lower atmospheric levels. However due to the exosphere’s low gravity and pressure some do make it into outer space. Solar wind storms compress the exosphere causing pressure to build up.

Can you breathe on Mars?

The atmosphere on Mars is mostly made of carbon dioxide. It is also 100 times thinner than Earth’s atmosphere so even if it did have a similar composition to the air here humans would be unable to breathe it to survive.

How old is Moon?

4.53 billion years

What does the tropopause do?

The tropopause is the boundary that demarcates the troposphere from the stratosphere and is the part of the atmosphere where there occurs an abrupt change in the environmental lapse rate (ELR) from a positive rate in the troposphere to a negative rate in the stratosphere.

What does the ozone layer do?

The ozone layer is the common term for the high concentration of ozone that is found in the stratosphere around 15–30km above the earth’s surface. It covers the entire planet and protects life on earth by absorbing harmful ultraviolet-B (UV-B) radiation from the sun.

What does the thermosphere do?

The thermosphere is the fourth layer of the Earth’s atmosphere that absorbs the sun’s radiation making it very hot. The thermosphere puts on the auroras a dazzling light show caused by colliding particles and the thermosphere is also where satellites orbit the Earth. The thermosphere is one busy layer!

What is the exosphere for kids?

The exosphere is the highest and top layer of the Earth’s atmosphere. It marks the edge of space. There are very few molecules in this layer. The lightest atmospheric gases such as hydrogen and helium exist throughout the exosphere.

What does exosphere mean?

What is exosphere

Layers Of Atmosphere | The Dr. Binocs Show | Educational Videos For Kids

Where the Exosphere Ends…Space Begins!

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