Lesson 4

Vocabulary

1. Complete the sentences with these words.

1. Scientists can use a filter,to take out small pieces of plastic from rivers.
2. Scientists used the new app to determine the location of underground water.
3. We have a system for recycling in our house: we put old bottles in a box, then take them to the recycling bin once a week.
4. Don't drink water from a canal because it can be full of dangerous bacteria.

2. Complete the table. Can you add any words?

Reading

3. Read the article on Student’s Book page 50. Choose the correct answer.

1. How much plastic is in our seas?

a. a lot

b. a little

c. a few

d. many

2. What do the filters do on the Ocean Cleanup Array?

a. They kill wildlife.

b. They save plastic.

c. They take plastic out of sea water.

d. They cause pollution.

3. What is the problem with some water in India?

a. It is not enough,

b. Animals live in it.

c. It is expensive.

d. It is not clean.

4. How does Deepika's green system work?

a. It removes salt.

b. It uses chemicals.

c. It is expensive.

d. It kills bacteria and cleans water.