Unit 5: Reading

Water vapour and gases occur naturally... Vehicles pollute the air in cities by giving off smoke, burning oil and lead.. What does sulphur dioxide combined with water vapour and oxygen

HÒA ĐA HIGHSCHOOL

TUY PHONG DISTRICT-BINH THUAN PROVINCE

1.Fog : Thick mist

2. Smog

3.SMOKE STACK

? 4.marsh

5.Forest fire

?

6.lightning

7.Dust storm

9.VOLCANIC ERUPTION 10.SULPHUR- OXYGEN GROUPS

11.FLOWER 12.POLLEN ?

GREEN HOUSE EFFECT

1 When does air pollution occur ?

2 What two gases occur naturally ?

3 What are some sources of air pollution in cities ?

Air pollution occurs when wastes are poured into the atmosphere and the air becomes contaminated and unpleasant

to breathe.

Some sources of air pollution are industry, automobiles, home eating, garbage, disposal Water vapour and gases occur naturally

4.How do vehicles pollute the air in the

cities ?

Vehicles pollute the air in cities by

giving off smoke, burning oil and lead.

5 What does sulphur dioxide combined

with water vapour and oxygen turn into.

Sulphur dioxide combined with water vapour and oxygen turns into a

sulphuric – acid mist.

1 What / clean air / provide ?

What does clean air provide ?

Clean air provides a healthy supply of oxygen.

2 What / might / forest fires ?

What might cause forest fires ?

Lightning, pllen and marsh gases

might cause forest fires.

3 What / carbon monoxide / come / from ?

What does carbon monoxide come from ?

Carbon monoxide comes from automobile exhausts and some industrial processes

4 What / in / engine exhausts ?

What are emitted in engines exhausts ?

Lead and smoke are emitted in engines

exhausts

5 What / burning / coal and oil /

release ?

What does burning coal and oil release ?

Burning coal and oil releases

other gases harmful to humans , especially sulphur dioxide.

Accounts for – disposal – lightning – oxygen – atmosphere – emits – poisonous – pollution – contaminated- lead – odourless - organic

a.The air we breathe in contains

more……… Than the air we breathe out.

b.This river has been ………by

chemicals Its water is now unsafe to drink.

oxygen

contaminated

c.The safe ……… of nuclear waste is a

major problem.

d Nam hasnot come to class for a week His doctor sent the school a teller this morning saying that he’s ill and needs another week’s rest His illness…

……… his absence.

e.You can smell………gases.

f These chemicals are ……… They can cause death or illness if taken into the body.

g………… is usually mixed with other metals to

h.The tre in that open field was struck by

………last month It’s now dead.

i.The………surrounds the earth

is about 900 coins thick.

j, A volcano………smoke , lava and

ashes.

k ………manure is very important in farming It brings back fertility to the soil without harm.

l Air………is now a problem for big cities.

lightning

atmosphere

emits organic

pollution

1 Find the words or phrases in the reading text

which have the following meaning:

1.to discharge (v)

2.exhaust – pipe of a motor vehicle

3 tin, iron , gold and copper

to contaminate poisonous

combine contains

1 Other causes of air pollution include power stations,

which release waste into rivers.

2 water pollution is caused by smoke and by chemicals

such as carbon monoxide in the exhaust fumes of cars

and others kinds of motor vehicles.

3 Scientists think that the green house effect will not be

serious.

4 Other gases and dust in the air and chemical in

clouds are also important to the climate of the earth.

F F F F

THINK ABOUT THIS QUESTION

If you are a member in government, what can you do to prevent air

pollution ?

IV Guessing Game

Choose the number you like and

follow the instructions!

AIR POLLUTION

NOISE POLLUTION

SEA POLLUTION (ATOMIC BOMB TEST)

WATER POLLUTION

V CONSOLIDATION: Summarize the reading by this

Dangerous chemicals