Explanation - The Atmosphere

 The Atmosphere 

Introduction

Earth has lots of different parts and systems to help it function. There are four particular parts that we could certainly not live without; these are Earth's spheres. These four spheres are called the Biosphere, Geosphere, Atmosphere and Hydrosphere. In my explanation, I will be informing you about the Atmosphere.

What is the atmosphere?

This question is commonly asked when someone has first heard of earth and its spheres. Well, the atmosphere is a layer of thin gases which surrounds the earth, it seals the planet and protects us from the vacuum of space. In other words, the atmosphere is a blanket of gases. A blanket of gases means the atmosphere is a bunch of harmful and non - harmful gases that protect us from the hazardous but amazing space.

Are the different layers in the atmosphere?

What are they called? What do they do?

Yes, the Atmosphere has layers. The six different layers are known as the Troposphere, Stratosphere, Mesosphere, Thermosphere, Ionosphere and Exosphere. The Ionosphere is not a part of the other five main layers. The order of the five main layers go, Exosphere, Thermosphere, Mesosphere, Stratosphere and Troposphere; Troposphere being the lowest layer and exosphere being the highest layer.

Troposphere: 

The Troposphere is the layer closest to Earth's surface. This particular layer includes the air we breathe and the clouds. It is also the layer where planes would fly. The Troposphere holds three-quarters of the mass of the entire atmosphere. This is the biggest layer. 

Stratosphere:

The stratosphere carries the EXTREMELY important ozone layer. The ozone layer protects us from ultraviolet radiation that comes from the sun. Actually, the ozone layer absorbs the UV rays. Without this layer, we life wouldn't be possible.

Mesosphere: 

The Mesosphere is the third closest layer to earth. The mesosphere burns up all the asteroids and meteors before they enter the earth. This layer is approximately 35 kilometres thick ( 22 miles) and is about 50 to 85 kilometres wide ( 31 - 53 miles). The mesosphere is by far the coldest layer of the atmosphere, dropping to as low as -173 degrees celsius ( 100 k) 

Thermosphere: 

The Thermosphere is the hottest layer of the atmosphere, reaching temperatures as high as 1727 degrees celsius ( 2000 k). The atmosphere has an extension that begins between 80km and 120km from the earth. Just like the stratosphere, the thermosphere soaks up the UV radiation and x-ray given by the sun. It also gives us a complete exploration of space.

Exosphere: 

The exosphere is the furthest away from earth and the last layer I will be explaining today. This layer is the very first protection layer we have; before all the other layers catch the rest that the exosphere can’t. Exosphere helps atoms to escape from the atmosphere and into space. Unlike the other atmospheric layers; exosphere is the only sphere with a definite shape. The Exosphere contains the lightest gases such as hydrogen and helium. 

Conclusion: 

Overall you can see that the atmosphere is exceptionally important. If the atmosphere didn’t exist we the biosphere and all the other spheres wouldn’t live either. The atmosphere protects us from the dangers of space. Make sure you remember how important the atmosphere is.  

GLOSSARY

Ultraviolet radiation (UV ray) - Invisible rays that are apart of the energy that comes from the sun

Atoms - the smallest particle of a chemical that can exist ( a molecule)

Hydrogen - a colourless, odourless, highly flammable gas.

Helium - An inert gas which is the lightest member of the noble gas series. This also means a chemical element.

Exploration - the action of exploring an unfamiliar area

Atmospheric - relating to the atmosphere of the earth.

Approximately - used to show something is almost, but not completely, accurate or exact (roughly

Mass - a large body of matter with no definite shape

Absorbs - sokes up or takes in (like a sponge)