The Atmosphere.

The Atmosphere.

1. Gaseous Matter

   • Al matter occupy a space in the enviroment. Matter in different states has different properties.
   • Gaseous State
     • In the gaseous state the mass are fixed and the volume and form are variable.
   • Liquid state
   • Solid state

2. Origin of the atmosphere

3. Composition of the atmosphere

   • The atmosphere are composed of a mixture of gases called air. Air is invisible but we can feel it as wind. Are composed from nitrogen, oxygen , CO2, water vapour, ozone, helium and argon.
   • 78% of nitrogen
   • 21% of oxygen
   • 1% of other gases, such as CO2 or helium

4. Structure of the atmosphere

   • Troposphere
     • The troposphere is an external layer of planet Earth that is very important for its functions. This is the layer of the atmosphere closest to the Earth's crust.
   • Stratosphere
     • The gases here move horizontally. The Ozono layer is here , 25 km away de Earth surface. Temperature increases as the altitud increases.
   • Mesosphere
     • Here in the mesosphere the temperature are of  -100 Cº. When a small meteorites break up in yhe thermosphere , shooting stars appear.
   • Thermosphere
     • Absorb the most powerful radiation from the Sun, The X- rays. Here are the ionposphere. The temperature are to 1000 Cº.
   • Exosphere
     • Exosphere are exterior layer of the atmosphere. Has a very low concentration of gases

5. Atmospheric phenomena

   • Precipitation
     •  
   • Frost
     • Fros occurs when dew freezes becaused the temperatue are below of 0 Cº.
   • Wind
     • Wind is the movement of the air from areas where the air is colder and denser , to ares where the air is warmer and lighter.
   • Clouds
     • The clouds form when the water vapour condensed into water droplets or ice crystals.
   • Dew
     • Occurs when the water vapour condensed of a surface of the Earth.
   • Fog
     • The fog is a cloud that are near of the surface of the Earth.

6. Living things and the atmosphere

   • Protects of meteorites
   • Regulate temperature

7. Atmospheric pollution

   • Greenhouse effect
   • Enviroment consequences of pollution

8. The Ozone layer

   • The Ozone layer is a layer in the stratosphere that protect we to the Ultraviolet - rays.
   • The hole of the Ozono layer
   • Dangers of destroying the Ozono layer
   • Protecting the ozono layer

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