Reducing Pollution

Reducing Pollution

Answer the following

1.      What is air pollution? What are the major causes of air pollution? What can we do to control them?

ë  The mixing of harmful gases and particles in the air is called air pollution

ë  It is caused by air pollutants like carbon dioxide. Carbon monoxide released by burning fossils fuels and automobile exhausts

We can control them by

1)      Planting more trees

2)      Using public transport

3)      Avoid crackers.

4)      Not burning garbage.

2.      Explain the term “Green House Effect” and “Global Warming”?

ë  Carbon dioxide in the atmosphere traps the heat released from the earth’s surface. This causes green house effect.

ë  Excess carbon dioxide increases the earth’s temperature leading to global warming.

3.      How is water polluted? What corrective measure can we take to control water pollution?

Water is polluted by littering industrial waste, sewage treatment plant and house hold activities.

To control water pollution.

1)      Recycle and dispose garbage properly

2)      Use natural fertilizer like compost and manure.

3)      Do not dump toxic house hold products.

4.      What harm does noise pollution causes? Suggest ways of reducing noise pollution?

Noise pollution causes hearing loss, loss of sleep, high blood pressure, increased heart beat and rate of breathing.

To reduce noise pollution

1)      Maintain vehicles and home appliances for smooth functioning.

2)      Don’t blow horns unnecessarily

3)      Don’t light fire crackers.

4)      Don’t play loud music at home.

Grouping

(Asthma, Tuberculosis, Jaundice, Cancer, Diarrhoea, Typhoid)

Air pollution	Water Pollution
Asthma Tuberculosis Cancer	Jaundice Diarrhoea Typhoid

(Fossil fuels, littering, vehicles, industrial wastes, generators, automotive exhaust, fertilizers, electric gadgets, loud speakers)

Causes of Air pollution	Causes of water pollution	Causes of noise pollution
Fossil fuels Automotive exhaust	Littering Industrial waste fertilizer	Vehicles Generators Electric gadgets Loud speakers.

Fill in

1.      The mixing of poisonous chemical with rain water is called Acid Rain

2.      The pressure of loud speaker in the atmosphere is called noise pollution

3.      Intensity of sound is measured in decibels (dB)

4.      Any sound louder then 90 dB is harm to our ears.

5.      Composting helps to soil moisture