Exercises

I. Answer the following questions:

1. What does the word “electron” mean? 2. What property has a piece of amber if to rub it? 3. Who noticed this property for the first time? 4. Is it possible to see an electron? 5. Is the speed of electrons slow or fast? 6. Does science know the weight, size, electrical character and the speed of motion of the electron? 7. What is the size of the electron in comparison with a ping-pong ball? 8. What is there at the heart of all the electron tubes? 9. What electron tubes do you know? 10. Are all the electrons identical to one another?

II. Define the meanings of the suffixes in the following words and translate there words:

Attraction, scientist, special, important, carrier, scientific, description, specially, different, condition, massive, effectively, slowly, possible, difference.

III. Read and translate the words from the text:

Amber, piece, people, in fact, whole, to attract, job, tiny, wire, subject, although, benefit, vacuum, figure, through, to move, everything, to compare, to describe, device, behaviour, under, condition, heart, to notice, science, at the heart of, per second, to discover, point, fast.

IV. Give Russian equivalents to the following groups of words of the same root:

To compare – compared – comparing – comparison – in comparison with – as compared to – comparative – comparable – incomparable;

To attract – attracted – attracting – attraction – attractive – attractively;

To mean – meant – meaning – mean – means – by means of – by all means – by no means – meaningful – meaningless; //To carry – carried – carrying – carrier;

To identify – identified – identifying – identify – identification – identical – identically;

To describe – described – describing – description – descriptive;

To carry – carrying – carried – carrier – majority carrier – minority carrier;

To move – moving – moved – movement – movable – immovable – motion – motionless – motional; // Wire – wireless – to wire.

V. Find synonyms:

I. To consider, all, to name, though, to travel, quick, to function, a set, certain, quantity, very small, flow, every, various, thus, the same

II. Each, definite, to think, to call, stream, device, different, identical, tiny, to operate, although, whole, fast, to move, amount, so

VI. Give antonyms to the following words:

Small, to move, fast, important, tiny, everything, to repel.

VII. Write the following sentences in the Past and Future Indefinite Tenses. Make these sentences negative and interrogative:

1. These are electrical charges in all the substances.

2. There is a flow of electrons in this wire.

VIII. Make the following sentences negative and interrogative and give “yes” and “no” answers:

1. They compare an electron with a ping-pong ball. 2. He noticed the effect of attraction.

3. You will describe the operation of this device. 4. He rubs a piece of amber.

IX. Ask all possible special questions:

1. Our Scientists study the properties of the electron. 2. Amber attracted the light object when we rubbed it. 3. Physicists will know more about the electron in the future. 4. The word “electron” means “amber” in Greek.

X. Translate into Russian paying attention to the use of the problem “it”. 1. It is interesting to know more about the electron. 2. It is important to study the properties of the electron. 3. It is not difficult to speak English. 4. It is necessary to use this device operates. 5. It is interesting to see how that device operates. 6. Is it difficult to do the labs? No, it is not. It is easy to do them. 7. It is difficult to make this experiment.