The atmosphere surrounds the Earth and is composed of various gases like nitrogen and oxygen. Air allows things to burn and is necessary for both animals and humans to breathe, as the lungs extract oxygen from inhaled air and release carbon dioxide. The atmosphere contains five layers - the troposphere where weather occurs, the stratosphere containing the ozone layer, the mesosphere where meteors burn up, the thermosphere which is the hottest layer, and the exosphere near space where satellites orbit.

1. Air and the AtmosphereAir and the Atmosphere
The atmosphere is all the air thatThe atmosphere is all the air that
surrounds the Earth.surrounds the Earth.

2. AirAir
 Air is a mixture of different gases, likeAir is a mixture of different gases, like
nitrogen and oxygen.nitrogen and oxygen.

3. Air is important in allowing things toAir is important in allowing things to
burnburn

4. Fish need air that is in water to liveFish need air that is in water to live

5. Animals need to breath air in order to stay
alive. Animals take the air into their lungs.
The lungs take the OXYGEN out of the air
and expel CARBON DIOXIDE.

6. USING AIRUSING AIR
As well as breathing, we can use air for many different purposes.
These include:
Sailing Hair drying Flying
Balloons Parachuting Kite Flying

7. Earth’s atmosphere is made upEarth’s atmosphere is made up
of 5 different layers thatof 5 different layers that
protect us from the Sun’s rays.protect us from the Sun’s rays.

8. The first layer of the atmosphere isThe first layer of the atmosphere is
the…the…
 The troposphere is the layer of the atmosphere nearest toThe troposphere is the layer of the atmosphere nearest to
earth.earth.
 All weather changes happen in the troposphere.All weather changes happen in the troposphere.
TROPOSPHERETROPOSPHERE

9. The second layer of theThe second layer of the
atmosphere is the…atmosphere is the…
 Some jets fly in this layer.Some jets fly in this layer.
 The ozone layer is inThe ozone layer is in
stratosphere. It protects usstratosphere. It protects us
from the ultraviolet rays offrom the ultraviolet rays of
the Sun.the Sun.
STRATOSPHERESTRATOSPHERE

10. The third layer of the atmosphereThe third layer of the atmosphere
is the…is the…
 is the coldest layer of theis the coldest layer of the
atmosphere.atmosphere.
 Meteors burn up in thisMeteors burn up in this
layer.layer.
MESOSPHEREMESOSPHERE

11. The fourth layer of the atmosphereThe fourth layer of the atmosphere
is the…is the…
 The thermosphere is the hottest layer of the atmosphere.The thermosphere is the hottest layer of the atmosphere.
THERMOSPHERETHERMOSPHERE

12. The last layer of the atmosphere isThe last layer of the atmosphere is
the…the…
 The exosphere is theThe exosphere is the
layer that is close tolayer that is close to
space.space.
 Satellites orbit earthSatellites orbit earth
in the exosphere.in the exosphere.
EXOSPHEREEXOSPHERE