Why is the exosphere important?

Answer 1

well the The troposphere is the lowest major atmospheric layer, extending from the Earth's surface up to the bottom of the stratosphere. The troposphere is where all of Earth's weather occurs. It is seven miles thick. It contains approximately 80% of the total mass of the atmosphere. The troposphere contains 99% of the water vapor in the atmosphere. Carbon dioxide is present in small amounts, but its concentration has nearly doubled since 1900.Like water vapor, carbon dioxide is a greenhouse gas which traps some of the Earth's heat close to the surface and prevents its release into space.

The stratosphere is the second lowest atmospheric layer. The ozone layer is part of this layer. The temperature in the stratosphere increases with height, but this isn't because the sun is closer to the stratosphere compared to the troposphere. It is because the stratosphere contains high concentrations of the gas ozone, which absorbs ultraviolet radiation from the sun and converts it to heat. This prevents the ultraviolet radiation getting to the Earth's surface. Very little air moves between the troposphere and the stratosphere so the stratosphere contains hardly any water

The mesosphere is the third layer of the atmosphere. The mesosphere is the middle layer. The mesosphere is one of the coldest layers. It is colder then Antarctica's lowest recorded temperature, and it is cold enough to freeze water vapor into ice clouds, which can be seen mostly after sunset. The most important function of mesosphere is the destruction of the meteors that fall on earth. According to scientists, about 40 tons of meteors fall on earth every day. The mesosphere burns these meteors when they enter this layer. These meteors collide with the gas particles present in the mesosphere and burn up.

The thermosphere is the layer closest to outer space. The air is very hot and thin. The temperature can be about 1,000 degrees; the temperature is not measured with a thermometer. The thermosphere is the hottest layer of the atmosphere with temperatures up to 3,200 F. The thermosphere rises several hundred miles above the earth's surface The Thermosphere contains a layer of charge electrical ion particles, also known as the ionosphere. The ions allow radio waves to be transmitted. Astronauts orbit Earth in the space station or space shuttle spends their time in this layer.

Answer 2

Atmosphere is the envelope of air that surrounds the earth. This envelope prevents the harmful ultraviolet rays from the sun from entering the earth. It also helps in maintaining the temperature of the earth. Hence it is very important.

Answer 3

The exosphere emits a geocorona; a sphere of ultra-violet light spherically surrounding the Earth, when viewed from outer space.

Answer 4

it absorbs sun radiation.