The 4 layers of the Atmosphere

There are 4 main layers that the atmosphere on Earth. From short to high altitude, they space as follows:


The 2 parts of the thermosphere are the ionosphere and the exosphere.

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We know every one of our weather occurs in the atmosphere. But in which setting layers? Let’s dig a little bit deeper into the function of each environment layer and also how does that relate to Earth.

1. Troposphere


The troposphere is the great that we live in. The troposphere starts in ~ ground level and also extends around 12 kilometres upwards.

This is whereby all weather occurs and also it’s the wait that us breathe.

A far-reaching amount the the troposphere is just 2 gases. For example, 78% is nitrogen and 21% is oxygen. Because that the continuing to be 1%, it’s mostly argon and also carbon dioxide.

Whether it’s indigenous agriculture, vehicles, electricity, or organic disasters, these significant sources the air pollution emit indigenous the ground right into primarily the troposphere and stratosphere.

2. Stratosphere


From about 12 km to 50 kilometres upwards is the stratosphere. In this layer, the jet currently blows strong winds eastward.

Airplanes use this class of the atmosphere when they take trip from west to east. It offers an extra push on that is tail which helps it relocate faster.

It additionally has the ozone layer, which absorbs harmful radiation from the sun. This consists of UV rays. Yet in the south pole, there is a hole and also if that enlarges could reason issues.

3. Mesosphere


The mesosphere is the coldest an ar of earth atmosphere. It’s somewhere close come -100 levels Celsius.

In the mesosphere, researchers send unmanned balloons to measure the temperature.

Actually, this layer additionally protects the planet from huge meteoroids. The friction within this layer causes meteors to burn up.

4. Thermosphere


The thickest class in the environment is the thermosphere beginning at around 80 kilometres going upwards.

This is whereby the UV radiation from the sunlight turns to heat causing the air to be really hot. It can reach temperatures approximately 1500 levels Celsius or more.

Actually, the thermosphere has 2 class of that is own referred to as the ionosphere and also the exosphere.


The ionosphere and magnetosphere have far-ranging overlap between them. The ionosphere is simply the inner great of the magnetosphere.

The ionosphere is where the sun’s radiation causes particles to it is in electrically charged, for this reason the term ‘ion’. In fact, this is whereby the sunlight flows through spectacular light reflects for the Aurora Borealis or north Lights.


The exosphere is the uppermost class of the thermosphere. It starts at about 500 km. Then, it extends to the outer edge of earth atmosphere and fades right into the vacuum of outer space.

It’s greatly lighter gases in the exosphere such as hydrogen and also helium. However there room heavier molecule such as nitrogen, oxygen, and carbon dioxide closer come the bottom that the exosphere.

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It’s in the exosphere whereby satellites can openly orbit the Earth. Because that example, this has GPS, telecommunication, and weather satellites.


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