Read the text again. Are these sentences true, false or not given?

1) Electricity was invented as a natural phenomenon.

2) Electricity is the flow of electrical power or charge.

3) Electricity is actually given as a radiation carrier.

4) Electricity can be renewable and nonrenewable.

5) Some notable accomplishments were made by Benjamin Franklin, Thomas Edison, and Nikola Tesla.

6) Scientists and inventors have worked to decipher the principles of heat transfer since the 1600s.

7) Tesla's inventions used electricity to bring indoor lighting to homes and used electricity to power industrial machines.

8) None of our actions involve electricity.

6. Look at the text again and find the words below. Which other words do they combine with? Is each compound adjective +noun or noun + noun?

For example: electric power, heat transfer.

a) power g) source

b) carrier h) energy

c) phenomena i) bulb

d) current j) machine

e) impact k) supply

f) devices l) policy

7. Work in pairs to discuss the following:

1) Do you agree that electricity has completely changed our daily life? In what way?

2) There were a number of scientists who carried out experiments with electricity. Which of these inventions are used nowadays? (Name them).

3) In your opinion do the majority of actions involve electricity?

Match column A to column B to make up a word combination

A B

1/discover a/ energy-efficient

2/ reduce b/ machines

3/ convert c/ electricity

4/ decipher d/ notable accomplishments

5/ make e/ the principle of electricity

6/ invent f/ indoor light to homes

7/ bring g/ the first light bulb

8/ power h/ laptops

9/ energize i/ electricity supply

10/ become j/ an impact

11/ keep k/ energy

Ask two questions (General and Special Questions) to the following sentences.

1) An English scientist named Thomas Young made contribution to the theory of light.

2) The light theory has explained the laws of mirrors and lenses, and the formation of shadows.

3) After scientists had begun to study the way lights behaves, they came up with two different ideas.

4) They have already compared the experimental and theoretical data.

5) Light consists of a stream of particles travelling in straight lines or rays.

6) Thomas Young’s experiment could not be explained at all by Newton’s corpuscular theory.

7) Young’s experiment had a remarkable result.

8) Scientists had studied light further when they came to realize that both theories of light were right.

10. Change the sentences below into the Passive Voice using Perfect Tenses:

1). By the beginning of the 17^th century William Gilbert, an English scientist, had already experimented with magnetism and static electricity.

2). The electrical engineers will have disconnected all the electrical installations and equipment by the end of the week.

3). By the end of 18^th century Franklin had conducted extensive research in electricity.

4). This scientist has already carried out the experiments with electricity..

5). The experts promise that they will have repaired the electrical equipment by the next morning.

6). The engineers of our laboratory have done all preparations for testing the electrical equipment.

7). By 1730 scientists had noticed a close interaction between electricity and magnetism.

8). Particular attention has been paid to the means of improving the properties of electric materials.

9). Electromagnet induction has produced an electric current in the field coils of a generator.

10). The step-up transformers have reduced amperage and increased voltage.