Activity 4. Are these statements true (T) or false (F) according to the text? 1. Dale Vince’s diamonds will be made from natural materials such as air and water.
2. They will be chemically different from diamonds mined from the earth.
3. Lab-grown diamonds are becoming more popular because of their low price.
4. Producing a one-carat diamond from mining creates more than 108kg of carbon-dioxide emissions.
5. Diamonds take billions of years to grow in laboratories.
6. Vince’s process produces hydrogen by splitting rainwater molecules.
Answers: 1. T 2. F 3. F 4. T 5. F 6. T
Activity 5. Find the following words in the text. The paragraph numbers are given to help you. 1. an adverb meaning completely (para 1)
2. an adjective meaning exactly the same (para 2)
3. a noun meaning fighting between countries or groups (para 5)
4. a noun meaning a process in which layers of a substance form gradually over a period of time (para 6)
5. a noun meaning an enclosed space inside a machine (para 7)
6. a verb meaning become firmly fixed together (para 7)
7. a noun meaning the process of sending electricity through liquid in order to create chemical changes (para 8)
8. an adjective meaning able to be replaced by natural processes (para 8)
Answers: 1. entirely 2. identical 3. conflict 4. deposition 5. Chamber 6. bond 7. electrolysis 8. renewable
Activity 6. Match the words in the left-hand column with the words in the right-hand column to make phrases from the text. 1. carbon a. industry
2. renewable b. impact
3. mining c. dioxide
4. irreversible d. supplier
5. environmental e. energy
6. energy f. damage
Answers: 1. c 2. e 3. a 4. f 5. B 6. d
Activity 7. Complete the phrases from the text using these prepositions. on with of at to in 1. identical _______ something else
2. grown _______ a laboratory
3. decide _______ something
4. awareness _______ something
5. create something _______ a facility
6. bond _______ something
Answers: 1. to 2. in 3. on 4. of 5. at 6. with
