CIKGU WANI

THE AIR AROUND US

Realizing importance of keeping the air clean

CHAPTER 5

CIKGU WANI

Learning Outcomes:

1) How life would be clean without clean air

2) Ways to keep the air clean

CIKGU WANI

Harmful effects of cigarette smoking

• Diseases related to cigarette smoking • Harmful substances in cigarette smoke

CIKGU WANI

Diseases related to cigarette smoking

• Heart disease

• Emphysema

• Lung and throat cancer

• Bronchitis• Asthma

• Click the disease to find out more!!!

CIKGU WANI

Diseases related to cigarette smoking

• Heart disease

• Emphysema

• Lung and throat cancer

• Bronchitis• Asthma

• Chemicals in cigarette smoke can cause high blood pressure, stroke (bursting of an artery) and heart attack (blocking blood supply to the heart)

CIKGU WANI

Diseases related to cigarette smoking

• Heart disease

• Emphysema

• Lung and throat cancer

• Bronchitis• Asthma

• Cigarette smoke damages the air sacs in the lungs

• The air sacs lose their elasticity and are unable to expand and contract

• The patient has difficulty in breathing

CIKGU WANI

Diseases related to cigarette smoking

• Heart disease

• Emphysema

• Lung and throat cancer

• Bronchitis• Asthma

• Heavy smokers run the risk of getting lung or throat cancer

CIKGU WANI

Diseases related to cigarette smoking

• Heart disease

• Emphysema

• Lung and throat cancer

• Bronchitis• Asthma

• The bronchi of the lungs become red and inflamed

• The patient coughs up excessive phlegm

• The patient suffers from chest pain

CIKGU WANI

Diseases related to cigarette smoking

• Heart disease

• Emphysema

• Lung and throat cancer

• Bronchitis• Asthma

• Asthma patients become worse with smoking

CIKGU WANI

Harmful substances in cigarette smoke

• Nicotine • Tar • Carcinogens• Carbon mon

oxide • Irritants

• Let’s find out!!! Click the substance…

CIKGU WANI

Harmful substances in cigarette smoke

• Nicotine • Tar • Carcinogens• Carbon mon

oxide • Irritants

• It is addictive • It stimulates the nervous system

and damages brain tissues• It harden blood vessels and

increases blood pressure

CIKGU WANI

Harmful substances in cigarette smoke

• Nicotine • Tar • Carcinogens• Carbon mon

oxide • Irritants

• It is a black acidic liquid which corrodes and damages the lungs

• It contains 17 chemicals which cause cancer in animals

CIKGU WANI

Harmful substances in cigarette smoke

• Nicotine • Tar • Carcinogens• Carbon mon

oxide • Irritants

• Cigarette smoke contains chemicals which can cause cancer of the lungs and throat

CIKGU WANI

Harmful substances in cigarette smoke

• Nicotine • Tar • Carcinogens• Carbon

monoxide • Irritants

• It is a poisonous gas which is found in cigarette smoke

• It combines readily with haemoglobin, depriving the body of oxygen

CIKGU WANI

Harmful substances in cigarette smoke

• Nicotine • Tar • Carcinogens• Carbon mon

oxide • Irritants

• Cigarette smoke contains irritants such as ammonia which irritate the respiratory passage as well as the air sacs in the lungs

CIKGU WANI

Life without clean air

Life without clean air

Acid raine.g. metal objects are corroded and pH of soil and water sources is lowered.

Deformities e.g. radioactive waste causes deformities in unborn babies

Blurred vision e.g. dust or smoke in the air blurs vision.

A reduction in agricultural productione.g. dust sticks to leaves and slow down the photosynthesis process.

The green house effecte.g. man will live in a warmer environment

Health problems e.g. lead causes blood poisoning and brain damage; smoke in the air can cause lung infections such as bronchitis.

CIKGU WANI

Ways to keep the air clean

• Use unleaded fuels. • Use public transport when available. Carpool

when necessary. Use bicycles instead of motor vehicles. Walk to nearby destinations whenever possible.

• Avoid open burning. Burn plastic waste in closed incinerators.

• Plant trees in your surroundings.

CIKGU WANI

Ways to keep the air clean

• Buy and use products in their non-aerosol form. Propellants used in aerosol can contribute to pollution.

• Select products with less packaging. Packaging consumes energy when it is made, generates harmful volatile organic compounds when it is printed and produces CO2 and CO when it is burned. When thrown away it goes to landfills, which generate greenhouse gases.

CIKGU WANI

Ways to keep the air clean

• Reduce, reuse and recycle items whenever possible. Buy and use recycled products.

• Look for durability in products you buy and use, not just lower prices.

• Ensure factories follow the environmental laws.

• Use ozone-friendly gases for air conditioners and aerosol sprays.

CIKGU WANI

Habits to maintain clean air

• Do not smoke • Do not carry out open burning• Save energy such as gas and electricity• Walk or cycle instead of travelling by car• Go to work in a car pool• Use public transport such as buses and LRT• Keep your home well-ventilated

CIKGU WANI

Test yourself!!!• What is the sources of air pollution caused by

carbon monoxide?

• State the gas that causesa) Acid rain b) The greenhouse effectc) Thinning of the ozone layer.

• What is the effect of lead on health.

CIKGU WANI

Test yourself!!!• State two steps that can be taken to prevent

factory smoke from polluting the air.

• State two negative effects of the depletion of the ozone layer.

CIKGU WANI

Test yourself!!!• State three air pollutants that are released by

motor vehicles.

• Give three ways to overcome this problem. • State the best ways to reduce carbon dioxide

in the air. Give a reason for your answer.