Earth's Atmosphere


The exosphere is the outer layer of Earth's atmosphere and first layer. This layer extends into space.The zone has a very low concentration of gases (mostly molecules of oxygen, hydrogen, and helium).This layer is the thickest layer of the  atmosphere.In the first picture it shows you that the exosphere goes on into space.

The Thermosphere

The thermosphere is located right under the exosphere (above the mesosphere).This layer of the atmosphere is where the temperature is found in earth's layer.At the tip of this layer  it is very hot it get up to 3,630*F( In the daytime it gets to 4530*F ). But at the bottom its very cold and gets low as 32*F.

The Mesosphere

Have you seen a meteor shower before ? Well this layer of the atmosphere is where it occur. This layer burns the meteor before it gets to earth. he top of the mesosphere is the coldest part of Earth's atmosphere. The temperature there is around-130° F.In the mesosphere and below, different kinds of gases are all mixed together in the air. Above the mesosphere, the air is so thin that atoms and molecules of gases hardly ever run into each other. The gases get separated some, depending on the kinds of elements (like nitrogen or oxygen) that are in them.

The Stratosphere

Because of this temperature stratification, there is little convection and mixing in the stratosphere, so the layers of air there are quite stable. Commercial jet aircraft fly in the lower stratosphere to avoid the turbulence which is common in the troposphere below.The stratosphere is very dry; air there contains little water vapor. Because of this, few clouds are found in this layer; almost all clouds occur in the lower, more humid troposphere.Very few airplanes can fly as high as the stratosphere because the air is so thin that there is not enough lift to keep the aircraft supported. Some spy planes do fly in the lower stratosphere

The Troposphere

This is our last layer so it is very thin the photo above shows that it is only 7 miles wide unlike all the other layers .The space shuttle and the International Space Station both orbit Earth within the thermosphere The thermosphere, gases made of different types of atoms and molecules are thoroughly mixed together by turbulence in the atmosphere.Although the thermosphere is considered part of Earth's atmosphere, the air density is so low in this layer that most of the thermosphere is what we normally think of as outer space.

The End

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