Unit 7: Pollution
SKILLS 2

VOCABULARY
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algal (n) tảo
bloom (v,n) nở hoa
discharge (n,v) đổ ra
Cool (v) làm mát
Population (n) dân số
Power plant (n) nhà máy điện
Power station (n) nhà máy điện

LISTENING
1. Describe what you see in the pictures and talk about the
relationship between them.

Listen and check your answers.
-The first picture shows an algal bloom in coastal seawater.
- The second picture shows the cooling towers from a power station.
They are both related to thermal pollution.

2. Listen to part of a conversation on TV between a
reporter and an environmentalist about thermal pollution.
Complete the diagram. Use no more than three words for
each blank.

2. Listen

Causes
- Power plants using water to (3)
cool equipment.
…………..
warm
- Discharge of cold water into (4)…………….

rivers

Thermal
pollution:
- Definition:
hotter
(1)…………or
(2)………..

cooler

Effects
Warmer
water decreasing oxygen
- (5)………..
……….…..
- Less oxygen harming (6) …………………..
fish populations
- (7)…………
Harmful algal blooms being another
effect

color of the water and (9)
- Can change (8)………..
………… fish.
poison

SOLUTIONS
cool down the water.
Building cooling towers to (10)……………….

Reporter: Does thermal pollution mean that bodies of water get hotter,Nam?
Mr Nam: Not always. Sometimes the water becomes colder, and that's also
thermal pollution means a change in the water temperature.
Reporter: That's interesting! What causes?
Mr Nam: Power station are one factor. They use water in the nearby lakes
or rivers to cool their equipment, which heats up the water. Then they
dump the hot water back into its source.
Reporter: Are there any other causes?
Mr Nam: Yes. Thermal pollution may also happen due to the discharge of
cold water from reservoirs into warm rivers.
Reporter: Thermal pollution can have dramatic effects. Right?
Mr Nam: Certainly. Most aquatic creatures need a certain temperature to
survive. Warmer water has less oxygen in it, and this can harm fish
populations. Besides, warmer water can cause harmful algal blooms.
This can change the colour of the water like in the first picture and, more
seriously, the algae poisons the fish.
Reporter: What can we do, Mr Nam?
Mr Nam: In many places, they build cooling towers like in the second
picture to cool down thewater from power stations.
Reporter: Anything else we can do?

WRITING
3. Work in pairs. Discuss the causes and effects
of one type of pollution in your area. Make
notes in the diagram.

……………………….
pollution
Definition:
………………………

EFFECTS
………………………
CAUSES
………………………

Pollution definition:
Air pollution occurs when the air contains
gases, dust, fumes or odour in harmful
amounts.
Cause:
industrial watse, exhaust from car and plane...
Effect:
causing diseases, death to humans, damage
to other living organisms such as animals
and food crops, or the natural or built
environment.

4. Imagine that you two are writing an article for the local newspaper about a type
of pollution in your area. One of you writes about the causes and the other writes
about the effects of the pollution type you have just discussed in 3.

Nowadays, air pollution has a big impact on the environment. Air
pollution is the release of particulates, biological molecules or other
harmful materials into Earth's atmosphere. It causes diseases and
death to humans, damage to other living organisms. There are a lot of
causes and effects of air pollution. I'd like to explain more in the
following paragraphs.
There are some causes of pollution such as: burning of fossil fuels,
agricultural activities, exhaust from favorite and industries,mining
operations and indoor air pollution. These activities contribute to air
pollution. We need to raise awareness in the community about these
causes to reduce them.
These causes lead to so many effects such as respiratory and heart
problems, globals warming , acid rain, effect on wildlife and depletion
of the ozone layer. These effects damage human life dramatically.
They are the reason why we need to prevent air pollution as much as
possible to create a better habitat.

5. Read each other's work and put them together
to make a complete article.

Air Pollution
Definition:
Air pollution Air pollution /be / one /
occurs when the air
serious /type / pollution. Air
pollution occurs …...........
contains gases, dust,
fumes in harmful amounts. which /be / harmful / man,
vegetation, and animals….
Causes: -industrial waste
Air pollution can / different
- exhaust from cars and
causes. The major source /
air pollution /be/ ………….
plane
The second /be / ......................
Effects: causing diseases,
Air pollution can / dramatic
death to human, damage to
effects. It causes …………
other living organisms such as
animals and food crops, or the So, what should we do to
reduce air pollution?
natural environment.
Exercise 3,4,5p12

Air Pollution
Air pollution /be / one / serious /type / pollution.
Air pollution occurs …........... which /be /
harmful / man, vegetation, and animals….

Air Pollution
Air pollution is one of a serious type of
pollution. Air pollution occurs when the
air contains gases, dust, fumes in harmful
amounts which are harmful to man,
vegetation, and animals….

Air pollution can / different causes. The major
source / air pollution /be/ ………….
The second /be / ......................

Air pollution can have many different
causes. The major source of air
pollution is industrial waste from
factories. The second is the exhaust
from cars, motor vehicles and planes...

Air pollution can / dramatic effects.
It causes …………

Air pollution can have dramatic effects. It
causes various dangerous diseases,
death to human, damage to other
living organisms such as animals and
food crops, or the natural environment
and the buildings look dirty.

Air Pollution
Air pollution is one of a serious type of pollution. Air
pollution occurs when the air contains gases, dust, fumes in
harmful amounts which are harmful to man, vegetation, and
animals….
Air pollution can have many different causes. The major
source of air pollution is industrial waste from factories.
The second is the exhaust from cars, motor vehicles and
planes...
Air pollution can have dramatic effects. It causes various
dangerous diseases, death to human, damage to other living
organisms such as animals and food crops, or the natural
environment and the buildings look dirty.
So, what should we do to reduce air pollution?

-Learn by heart vocab.
-Rewrite the article and do exercises E1,2 ( PAGE 10workbook).
- Prepare part : LOOKING BACK & PROJECT

Air pollution
Definition: Air pollution occurs when the air contains gases,
dust, fumes in harmful amounts.

• Causes: industrial waste, exhaust from cars and
plane;
• Effects: causing diseases, death to human, damage to
other living organisms such as animals and food
crops, or the natural environment.

Suggested article Air Pollution
Air pollution is one of a serious type of pollution. Air
pollution occurs when the air contains gases, dust, fumes in
harmful amounts which are harmful to man, vegetation, and
animals….
Air pollution can have many different causes. The major
source of air pollution is industrial waste from factories.
The second is the exhaust from cars, motor vehicles and
planes...Agricultural activities as crop spraying with
pesticides and herbicides are another one.
Air pollution can have dramatic effects. It causes various
dangerous diseases, death to human, damage to other living
organisms such as animals and food crops, or the natural
environment and the buildings look dirty.
So, what should we do to reduce air pollution?