The Levels of the Atmosphere (Science)

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The Levels of the Atmosphere

     There are 5 levels to the Earth’s atmosphere. The 5 layers are troposphere, stratosphere, mesosphere, thermosphere, and exosphere. The last layer fades away into space. The layers start from the ground and then go up to space. Each layer has a different trait.

    Troposphere, the lowest level of earth’s atmosphere. It starts about 10KM above ground level. 10Km is about 33,000 feet above the ground level. Humans live on the troposphere. We breathe the air that the troposphere produces. All weather happens at this atmosphere level because all clouds appear on this level. About 99% of vapor is found circulating inside the troposphere. This amount of vapor causes clouds to form. The temperature will tend to get colder as you climb up the Troposphere.

     The second layer of Earth is the stratosphere. It goes past the troposphere and extends 50km above Earth’s ground. The ozone layer is in the stratosphere. The layer protects humans from ultraviolet radiation from the sun. In other words, It prevents humans from burning up too much. Airplanes fly in the stratosphere, but they only travel in the lower part. The higher part of the stratosphere has strong and rocky winds. The wind is smoother at the bottom of the stratosphere.

     The third level of Earth’s atmosphere is the mesosphere. To lives above our planet at 85km. Temperatures is at -90 Celsius at the top of the mesosphere atmosphere. This is the coldest level atmosphere level on Earth. The air at this level is too thin for humans to breathe in. Humans can not survive at this level.

     The fourth level of the Earth’s atmosphere is thermosphere. Satellites orbit the earth at this atmosphere level. If a human was at this level, they would feel a cold sensation. The sun is very hot at this level, but the atmosphere will make humans think they are being frozen to death. The atmosphere is 500km above Earth’s ground. The aurora or strange green lights can be seen at this atmosphere level.

     Exosphere, the last atmosphere level of Earth. The air in this level is very thin and similar to space. Air is leaked out from Earth at this level. The exosphere is about 100,000km above Earth’s ground level. There is no exact top to the exosphere, but some would say it extends to the half travel distance of the Moon and Earth.





Reference:


(2015). Layers of Earth’s Atmosphere. Retrieved from URL: https://scied.ucar.edu/atmosphere-layers.