This lesson teaches you some important facts on air.
Air is a mixture of gases. It covers the Earth in a layer, which is called atmosphere.
Can you feel air? Yes
When the air is moving we can feel it. Moving air is called wind.
E.g. – When you run or cycle you can feel the air is blowing on your face and body.
Can you hear air? Yes.
E.g. – On a windy day as the air rushes through the trees we can hear it.
Can you see air? No.
Does air have a colour? No.
Can you taste air? No.
Can you smell air? No. Clean air does not have a smell.
Carbon dioxide 0.03%
Noble gases 0.97% (Helium, Argon, Krypton)
Yes, the gases in the air are important for us in many ways.
|Nitrogen||Too much of oxygen is dangerous for humans. Nitrogen reduces the strength or flavour of oxygen in the air.|
Hope you learned a lot of interesting facts on air.
Also, read the lesson Oxygen in air.