8) Air Pollution

Question 1

Air is a mixture of gas.
Name 3 components of air.

Answer 1

nitrogen
oxygen
carbon dioxide

Question 2

What one use of oxygen in the air for living things?

Answer 2

Oxygen is needed for respiration.

Question 3

What are air pollutants?

Answer 3

They are harmful substances found in the air.

Question 4

What does PSI stand for? (in Singapore)

Answer 4

Pollutants Standard Index

Question 5

What does PSI measure?

Answer 5

The amount of air pollutants in the air.

Question 6

There are 4 main air pollutants.
Name one of them.

Answer 6

carbon monoxide
sulfur dioxide
nitrogen oxides
particulate matter

Question 7

When fossil fuel is burnt, which 2 air pollutants are produced?

Answer 7

sulfur dioxide
particulate matter

Question 8

Which air pollutant is produced when there is incomplete burning of fossil fuel?

Answer 8

carbon monoxide

Question 9

Which air pollutant is produced by the hot engine of motor vehicles?

Answer 9

nitrogen oxides

Question 10

Which air pollutant is produced by forest fire?

Answer 10

particulate matter

Question 11

Which air pollutant is produced by lightning strikes?

Answer 11

nitrogen oxides

Question 12

Which air pollutant is produced by volcanos?

Answer 12

sulfur dioxide

Question 13

Carbon monoxide can cause respiratory problems for humans.
What is the other harmful effect?

Answer 13

It can cause poisoning as it reduces the ability of the blood to carry oxygen.

Question 14

Nitrogen oxides can cause respiratory problems for humans.
What is the other harmful effect?

Answer 14

It can form acid rain to corrode buildings and kill plants and animals.

Question 15

Sulfur dioxide can cause respiratory problems for humans.
What is the other harmful effect?

Answer 15

It can form acid rain to corrode buildings and kill plants and animals.

Question 16

How are acid rains formed?

Answer 16

When sulfur dioxide and nitrogen oxides dissolves in rainwater.

Question 17

What are some of the harmful effect of acid rain?

Answer 17

1) Corrode buildings and statue
2) Kill plants and fishes

Question 18

What is the cause of haze?

Answer 18

Forest fires

Question 19

What are some of the harmful effect of haze?
Give 1 example.

Answer 19

1) Causes visibility of the surrounding to drop
2) Causes irritation to eyes, throat and mouth.

Question 20

Name one way we can reduce air pollution.

Answer 20

1) Walking or cycling instead of using motor vehicles.
2) Traveling by public transport instead of using a car.
3) Use hybrid cars instead of motor vehicles.
4) Turn off idling vehicles.
5) Use less electricity.
6) Industrial plants and factories are to install exhaust filters to reduce air pollutants released into the air.
7) Reduce, reuse and recycle materials to reduce the amount of rubbish burnt in incineration plants.
8) Use biodegradable packaging to reduce the amount of rubbish burnt in incineration plants.