1. The Atmosphere
Atmosphere
The atmosphere is a mixture of gases and dust that surrounds a planet.
Earth’s atmosphere is divided into FOUR layers.
7 ½ min Journey through the layers of atmosphere BBC
5 min Earth’s Atmosphere – surfing the air

2. Atmosphere 78% nitrogen 21% oxygen 1% (argon, carbon dioxide, dust,
water vapor, ash, dirt & smoke)
5 min  Layers of Atmosphere

3. Troposphere All weather and life – are found in this layer.
It is a layer of mixing and changing gases.
TROPO = change or mixing

4. Stratosphere The gases found here are layered.
The OZONE layer is located in this layer.
It protects life on Earth from harmful UV radiation from the sun.
STRATO = layer

5. Mesosphere The middle layer of the atmosphere. Coldest layer
Layer where meteors burn up
Meso = middle
Coldest

6. Thermosphere The outermost and the hottest layer
“Northern lights” - auroras
Thermo = heat
hottest