Unit 7 grade 8: Pollution – A Closer Look 1

1. Vocabulary

1.1. Task 1 Unit 7 grade 8

Complete the table with appropriate verbs, nouns, and adjectives. (Complete the table with the appropriate verbs, nouns and adjectives.)

Guide to answer

(1) poison

(2) contaminate

(3) pollutant

(4) tarnished

(5) death

(6) damage

1.2. Task 2 Unit 7 grade 8

Complete the sentences with the words from the table in 1.1. You do not need to use all the words. The first letter of each word has been provided. (Complete the sentences with the words from the table from section 1.1. You do not need to use all the words. The first letter of each word is provided.)

Guide to answer

1. poisonous

2. pollutants

3. dead

4. contaminated

5. damage

6. pollute

Translated:

1. Toxic chemical waste is discharged into the river.

2. Do you know which pollutant causes air pollution?

3. Dead fish float on water.

4. Don’t drink that water. It’s been poisoned.

5. Acid rain has caused damage to trees in this area.

6. If we pollute the air, more and more people will have breathing problems.

1.3. Task 3 Unit 7 grade 8

a. Decide which sentence in each pair of sentences is a cause and which is an effect. Write C for cause) or E (for effect) next to each sentence. (Decide which sentence in each pair of sentences is the cause and which is the effect. Write C (cause) or E (effect) for each.)

Guide to answer

first. People throw litter on the ground.(People throw garbage on the ground.) (C)

Many animals eat the litter and become sick. (Many animals eat garbage and get sick.) (E)

2. Ships spill oil in oceans and rivers. (The ships flowed oil into the oceans and rivers.) (C)

Many aquatic animals and plants die. (Many aquatic animals and plants'” died.) (E)

3. Household dump waste into the river. (Households discharge garbage into the river.) (C)

It is tarnished. (The river is polluted.) (E)

4. Their children have birth effects. (Reduced birth rate.) (E)

The parents were exposed to radiation. (Parents were radioactive.) (C)

5. We can’t see the stars at night. (We can’t see the stars at night.) (E)

There is too much light pollution. (There is too much light pollution.) (C)

b. Combine the sentences in each pair into a new sentence that shows a cause/ effect relationship. Use the cause or effect signal word or phrase given in brackets. You will have to add, delete, or change words in most sentences. (Combine the sentences in each pair into a new cause/effect sentence. Use the cause/effect word given in parentheses. You will have to add, remove or change words in most of the sentences. sentence.)

Guide to answer

1. Because people throw litter on the ground, many animals eat it and become sick.

(Because people throw garbage on the ground, many animals eat it and become sick.)

2. Oil spills from ships in oceans and rivers lead to the death of many aquatic animals and plants.

(Oil spills from ships in oceans and rivers lead to the death of many aquatic animals and plants.)

3. Households dump waste into the river so it is tarnished.

(Households dump waste into the river so it gets polluted.)

4. Since the parents were exposed to radiation, their children have birth defects.

(Since the parents were exposed to radiation, their children had birth defects.)

5. We can’t see the stars at night due to the light pollution.

(We can’t see the stars at night due to light pollution.)

1.4. Task 4 Unit 7 Grade 8

Work in groups. Look at the pairs of pictures. Give as many sentences as possible to show cause/effect relationships. (Work in groups. Look at pairs of pictures. Give multiple sentences to show cause/effect.)

Guide to answer

first. People cough because they breathe in the fumes from cars.

(People cough because they breathe in smoke from cars.)

2. The soil is tarnished, so plants can’t grow.

(The soil is contaminated, so the tree cannot grow.)

3. We won’t have fresh water to drink because of water pollution.

(We won’t have clean water to drink because it’s polluted.)

4. We plant trees, so we can have fresh air.

(We plant trees, so we have clean air.)

2. Pronunciation

Stress in words ending in -ic and -al (Put sounds in words ending in -ic and -al)

2.1. Task 5 Unit 7 Grade 8

Listen and mark the stress in each word, then repeat it. (Listen and highlight the stress in each word, then repeat it.)

Click to listen

Guide to answer

2.2. Task 6 Unit 7 Grade 8

Underline the words ending in -ic and circle the words ending in -al in the following sentences. Mark the stress in each word. Listen and check your answer, then repeat the sentences. (Underline the endings of -ic and circle the endings of -al in the following sentences. Tick each word. Listen and check your answers, then repeat the sentences.)

Click to listen

Guide to answer

first. According to scien’tific research, tiny species may help clean radioactive pollution.

(According to scientific research, microscopic substances can help clean up radioactive pollution.)

2. Water quality has become a ‘national’ problem.

(Water quality has become a national issue.)

3. Many people have received ‘medical treatment because of the disease.

(Many people receive medical treatment because of illness.)

4. ‘Chemical waste can cause water pollution.

(Chemical waste can contaminate water.)

5. The reduction in air pollution was dra’matic last year.

(The reduction in air pollution has been evident in the past year.)

3. Practice Task 1

Choose the best answers

Question 1: __________ pollution is harmful or annoying level of noise, as from vehicles, industry activities, etc.

A. light B. visual C. soil D. noise

Question 2: Parents should teach children not to __________ wastes on the road

A. litter B. poison C. cause D. measure

Question 3: I can’t hear your voice __________ I’m wearing an earplug

A. although B. due C. however D. because

Question 4: His grandfather made him __________ hard when he was small

A. study B. to study C. study D. study

Question 5: This picture __________ the contamination of ground water.

A. illustrate B. illustrating C. illustrate D. illustrated

4. Practice Task 2

Choose the letter A, B, C or D the word that has the underlined part different from others.

Question 1: A. aperfect B. algae C. aquatic D. perm anet

Question 2: A. school B. cholera C. chemistry D. machine

Question 3: A. litter B. light C. visual D. radiation

Question 4: A. radiooactive B. pollution C. contaminate D. convey

Question 5: A. billboard B. loss C. onlyolera D. fox

5. Conclusion

Through this lesson, children need to do full exercises and practice how to stress sounds in words ending in -ic and -al; At the same time, there are a few words to keep in mind:

• poison (n): poison
• poisonous (Adj): poisoned
• contaminate (v): to contaminate
• pollution (n): pollution
• death (n): death
• damaged (adj): destroyed