Unit 7 grade 8: Pollution – Skills 2
1. Listening
1.1. Task 1 Unit 7 grade 8
Describe what you see in the pictures and talk about the relationship between them. (Describe what you see in the picture and talk about the relationship between them.)
Click to listen
Guide to answer
– The first picture shows an algal bloom in coastal seawater.
(The first image shows an algae bloom in coastal seawater.)
– The second picture shows the cooling towers from a power station.
(The second image shows the cooling towers from a power station.)
– They are both related to thermal pollution.
(Both are related to thermal pollution.)
1.2. Task 2 Unit 7 grade 8
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. (Listen to a televised dialogue between a member and an environmentalist about heat pollution. Complete the table. Use no more than 3 words for each blank.)
Click to listen
Guide to answer
(1) hotter
(2) cooler
(3) cool
(4) warm rivers
(5) warm water
(6) fish populations
(7) harmful
(8) colors
(9) poison
(10) cool down
Translated:
Thermal pollution
– Definition: hotter or cooler water Cause:
+ Thermal power plants use water to cool equipment.
+ Discharging hot water into rivers.
– Consequence:
Hotter water reduces the amount of oxygen.
Less oxygen harms fish.
The growth of harmful algae is another consequence.
+ Can change the color of water and cause fish poisoning.
– Solution:
Build cooling towers to cool the water.
Audio scripts:
Reporter: Does thermal pollution mean that bodies of water get hotter, Mr 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 is it?
Mr Nam: Power stations 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 color of the water like in the first picture and, more seriously, the algea 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 the water from power stations.
Reporter: Anything else we can do?…
Translated:
Reporter: Does thermal pollution cause water sources to heat up, Mr. Nam?
Mr. Nam: Not quite right. Sometimes the water becomes colder, and that also pollutes the heat which means changes in the water temperature.
Reporter: Interesting! What is the cause?
Mr Nam: Power plants are a factor. They use the water in nearby lakes or rivers to cool their equipment, heating the water. Then they pour the hot water back to its source.
Reporter: Is there any other cause?
Mr. Nam: Yes. Thermal pollution can also occur from the discharge of cold water from reservoirs into warm rivers.
Reporter: Thermal pollution can have dramatic effects. Is it right?
Mr. Nam: Sure. Most aquatic organisms need a certain temperature to survive. Warmer water has less oxygen, and this can harm fish populations. Besides, warmer water can cause harmful algal blooms. This can change the color of the water as shown in the first picture and, more seriously, the algae poison 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 water from power plants.
Reporter: Can we do anything else? …
2. Writing
2.1. Task 3 Unit 7 grade 8
Work in pairs. Discuss the causes and effect of one type of pollution in your area. Make notes in the diagram. (Work in pairs. Discuss the causes and consequences of one of the types of pollution in your area. Make notes on the chart.)
Guide to answer
Soil pollution
– Definition: Soil pollution happens when human activities destroy the earth’s surface.
– Cause: pesticides, herbicides, chemical industrial watse, deforestation…
– Effect: soil pollution, the upper layer of soil is damaged, effect on wild-life…
Translated:
Soil pollution
– Definition: Soil pollution occurs when human activities destroy the earth’s surface.
– Causes: pesticides, herbicides, chemical industry waste, deforestation…
– Impacts: soil pollution, damaged topsoil, impact on wildlife…
2.2. Task 4 Unit 7 Grade 8
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. (Imagine you are writing an article for a local newspaper about a type of pollution in your area. One of you writes about the cause and the other writes about the effect, then discuss.)
Guide to answer
Air pollution:
– Definition: Air pollution occurs when the air contains gases, dust, fumes or odor in harmful amounts
– Cause: industrial watte, 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.
– Solutions: Fine companies that release emissions into the air.
Translated:
Air pollution
– Definition: Air pollution occurs when the air contains toxic gases, dust, fumes or odors in dangerous quantities.
– Causes: industrial waste, exhaust from cars and planes…
– Consequences: causing disease, death to humans, harm to living populations such as animals and food crops, or the natural environment or environmental architecture.
– Solution: Penalize companies that emit emissions into the air.
2.3. Task 5 Unit 7 Grade 8
Read each other’s work an put them together to make a complete article. (Read each person’s work and put them together to complete the task.)
3. Practice Task 1
Choose the letter A, B, C or D to complete the sentences with given words
Question 1: If/ people/ breath/ contaminate/ air, they/ have/ breathing problems
A. If people breathe contaminated air, they had breathing problems.
B. If people breathe contaminated air, they would have breathing problems.
C. If people breathe air, they have breathing problems.
D. If people breathe air, they will have breathing problems.
Question 2: Many/ people/ this area/ have/ cholera/ because/ they/ drink/ untreat/ water.
A. Many people in this area have cholera because they drink raw water.
B. Many people on this area have cholera because they drink raw water.
C. Many people on this area have cholera because they drink untreating water.
D. Many people in this area have cholera because they drink untreating water.
Question 3: The street/ not/ look/ attractive/ because/ there/ be/ a lot of/ rubbish.
A. The street not look attractive because there’s a lot of rubbish.
B. The street not look attractive because there’re a lot of rubbish.
C. The street doesn’t look attractive because there’s a lot of rubbish.
D. The street don’t look attractive because there’re a lot of rubbish.
Question 4: The music club/ be/ make/ so/ much noise/ that/ the residents/ require/ them/ turn/ the music/ down
A. The music club is making so much noise that the residents require them to turn the music down.
B. The music club is make so much noise that the residents require them to turn the music down.
C. The music club be make so much noise that the residents require them to turn the music down.
D. The music club be making so much noise that the residents require them to turn the music down.
Question 5: Visual/ pollution/ prevent/ us/ see/ far/ away.
A. Visual pollution prevents us from seeing far away.
B. Visual pollution prevents us with seeing far away.
C. Visual pollution prevents us on seeing far away.
D. Visual pollution prevents us of seeing far away.
4. Practice Task 2
Rearrange the sentences to make meaningful sentences
Question 6: What/ pollution/ to/ is/ types/ the/ of/ most/ human/ harmful?
A. What pollution of types is the most harmful to human?
B. What types of pollution is the most harmful to human?
C. What the most types of pollution is harmful to human?
D. What are types of pollution harmful the most to human?
Question 7: poison/ Sewages/ lakes/ from/ such/ and/ water/ factories/ bodies/ as/ rivers
A. Sewages as rivers from factories poison water bodies such and lakes.
B. Sewages and lakes from factories poison water bodies such as rivers.
C. Sewages from factories poison rivers and lakes such as water bodies.
D. Sewages from factories poison water bodies such as rivers and lakes.
Question 8: of/ are/ Plastic/ of/ source/ the/ main/ bags/ one/ pollution.
A. Plastic bags are the one of main source of pollution.
B. Plastic bags are one of source of the main pollution.
C. Plastic bags are one of the main source of pollution.
D. Plastic of bags are one pollution of the main source.
Question 9: in/ food/ Soil/ results/ contamination/ unsafe
A. Soil food results in unsafe contamination.
B. Soil contamination results in unsafe food.
C. Soil unsafe results in food contamination.
D. Soil results in contamination of unsafe food
Question 10: If there were more trees in the area, the air would be fresher.
A. If there were more trees in the area, the air would be fresher.
B. If there were more trees in the area, the air would be fresher.
C. If there would be more trees in the area, the air were fresher.
D. If the air were more trees in the area, there would be fresher.
5. Conclusion
At the end of this lesson, students need to practice listening skills and practice writing about the causes and consequences of a type of pollution in the locality and offer solutions for that type of pollution; At the same time, memorize the words in the following lesson:
- thermal pollution: thermal pollution
- power station: power station
- cool down: cool down >< heat up: heat up
- smoke (n): smoke
- industrial watte: industrial waste
- living organisms: living organisms
- discharge (n): discharge
- temperature (n): temperature
- survive (v): to survive
- seriously (adv): seriously
.
=============