This ppt contains layers of the atmosphere

1. LAYERS OF THE ATMOSPHERE
Std – 6TH
Sec – A

2. ATMOSPHERE
• Our earth is surrounded by a huge
envelope of air called atmosphere
• Atmosphere extends to more than
800km above the surface of earth
• It protects us from harmful rays
coming from sun
• Availability of air is thicker near
the earths surface and, it gradually
decrease when we go higher

3. LAYER OF THE ATMOSPHERE
• The atmosphere is made up of five different layers
The troposphere
The stratosphere
The mesosphere
The ionosphere
The exosphere

4. DIFFERENT LAYERS OF THE ATMOSPHERE

5. TROPOSPHERE
• Lowest layer of the atmosphere (closest to earth)
• We all live in this layer of atmosphere
• Most of the mass of the atmosphere is in troposphere
• Clouds, weather changes happen in this layer

6. STRATOSPHERE
• Second layer of the atmosphere
• It is 50km above the troposphere
• Here another layer is placed
Ozone layer – it protects the living things from the harmful UV
rays from sun, altitude increase and temperature also increase
because ozone layer absorbs heat
• Jets fly here because it is calm

7. MESOSPHERE
• It is the third layer of the atmosphere
• Meso means middle
• Reaches from 80 km above the earths surface
• It protects the earth from being hit from meteoroids which
comes from space

8. IONOSPHERE
• The Ionosphere is part of Earth's upper atmosphere,
between 80 and about 600 km
• where Extreme Ultra-Violet (EUV) and x-ray solar radiation
ionizes the atoms and molecules thus creating a layer of
electrons.
• The ionosphere is important because it reflects and modifies
radio waves used for communication and navigation.

9. EXOSPHERE
• The exosphere is the highest and top layer of the Earth's
atmosphere.
• It marks the edge of space.
• There are very few molecules in this layer.
• The lightest atmospheric gases such as hydrogen and helium
exist throughout the exosphere.

10. Thank you