. . . Air Pollution. All emojis designed by OpenMoji – the open-source emoji and icon project. License: CC BY-SA 4.0. 

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All emojis designed by OpenMoji – the open-source emoji and icon project. License: CC BY-SA 4.0

. . . Lesson objectives. 1) Understand why clean air is important. 

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3) Understand where air pollution can come

. . . What is air?. •
Air is a mixture of gases that surrounds us.. 

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•
Air is a mixture of gases that surrounds us.

•
We cannot see it, taste it, or smell it.

. . . Why is air important?. Air =. . •
Our bodies need air so that we can breathe.. 

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•
Our bodies need air so that we can 
breathe.

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Air is as important as food and water.  We 
could not live without it.

. . . =. . Air pollution. Why is clean air important?. 

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•
Just like food and water, the air can get 
dirty.

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Something that makes the air dirty is 
called air pollution.

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Our bodies do not like air pollution, it is 
bad for our health.

. . . Air pollution. Two types of air pollution. Gases:
•
One of these gases is called Nitrogen Dioxide.. 

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Gases:
•
One of these gases 
is called Nitrogen 
Dioxide.

Small bits of dirt:
•
This dirt is called 
particles.

. . . Can we see air pollution?. •
We cannot see air pollution when it is in the air.. 

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•
We cannot see air pollution when it is in 
the air.

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Particles are 5 times smaller than a 
human hair!

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In order to see or measure air pollution, 
we have to do some science experiments.

. . . Science experiment:. Nitrogen Dioxide (???). 

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•
We use a small tube 
called a diffusion 
tube to measure 
???.

•
Local councils use 
these to measure air 
pollution in their 
area.

. . . Science Experiment:. Particles (PM). . Particles. 

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•
We can wipe wet cotton pads on a 
surface to pick up PM, so that we can see 
them.

. . . Sources of air pollution. . . . . . •
One cause of air pollution is traffic.. 

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•
One cause of air pollution is traffic.

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Which of these vehicles do you think 
release air pollution?

. . . Sources of air pollution. . . . . . •
Answer: the car, bus, motorbike and lorry.. 

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•
Answer: the car, bus, motorbike and lorry.

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They cause air pollution because they have 
an engine which burns fuel.

. . . Sources of air pollution. •
Sources of air pollution are either:
Natural: caused by nature.
Man-made: caused by human activity.. 

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•
Sources of air pollution are either:
Natural: caused by nature.
Man-made: caused by human activity.

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Below are some other sources of air 
pollution. Which are natural, and which are 
man-made?

. . . Sources of air pollution. Answer:. . . . Burning fuel. 

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. . . Reflection. •
How could the ways we travel to school affect air pollution?. 

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•
How could the ways we travel to school 
affect air pollution?

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How could we reduce air pollution at 
school?

. . . Activities. •
Test what you have learnt using the air pollution quiz!. 

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•
Test what you have 
learnt using the air 
pollution quiz!

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Find all the words on 
the word search!

. . . Key words. Air pollution: something that makes the air dirty.. 

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Air pollution: something that makes the air dirty.

Nitrogen Dioxide (???): a form of air pollution. 
It is a gas.

Particles (PM): a form of air pollution. It is small 
bits of dirt.

Diffusion tube: a small tube we use to measure 
???.

. . . Feedback. •
If you are a parent or guardian, please offer any feedback you have about this lesson using the short 2 minute survey below:. 

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•
If you are a parent or guardian, please 
offer any feedback you have about this 
lesson using the short 2 minute survey 
below: