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3. Answer the following questions.

  1. What is the difference between force and motion?

  2. What do Newton’s three Laws of motion state?

  3. Does the weight have any relation to gravity?

  4. What does gravity depend on?

  5. How does friction influence one’s moving?

  6. Ho can you explain the phenomenon of magnetism?

  7. Where are the electromagnets used?

  8. There are different kinds of force. Name some of them referring to the text.

4. Fill in the gaps with appropriate words.

Action, attracted, electromagnet, friction, measure, physics, relation, repelled

1. ________ studies force and motion in detail.

2. According to the third Law of motion there is an equal ___ for each ___.

3. The ________ of gravity on the planet Earth is weight.

4. ________ slows down the speed of movements.

5. Scientific explanation of magnetism is following: objects are ______ to other objects or ______ by them.

6. ________, one type of magnet, has many practical uses.

5. Find English equivalents to the following words in the text.

Механічна сила, визначення, галузь науки, переломне наукове відкриття, зовнішня сила, інерція, шкала, визначати(ся), полюс, квантова механіка

6. Match the following modal verbs with their equivalents.

may

had to

was/were allowed to

must

shall/will be able to

shall/will have to

can

was/were able to

shall/will be allowed to

7. Translate the following sentences into English. Use equivalents of modal verbs.

1. Ви змогли знайти його вчора? 2. Сестрі дозволили залишитися на вечірці. 3. Джону скоро дозволять водити машину. 4. Які іспити ти повинен будеш скласти влітку? 5. Її син повинен був залишити країну. 6. Машин була надто дорогою. Він не зміг її купити. 7. Вона зможе тебе завтра відвідати? 8. Ти мусив піти вчора до лікаря. 9. Тобі ще не дозволили піти. 10. Вам не дозволять приховати правду.

8. Choose the proper example.

1. …… studies force and motion in detail.

a)

Mathematics

b)

Physics

c)

Chemistry

d)

Philology

2. ……. slows down the speed of movements.

a)

Air

b)

Movement

c)

Pole

d)

Friction

3. Scientific explanation of magnetism is following: objects are attracted to other objects or …… by them.

a)

come

b)

getted

c)

read

d)

repelled

4. If the current stops, the ….. stops too.

a)

magnets

b)

magnetism

c)

electromagnet

d)

poles

5. With more friction, you have to work …… to move the same distance, because the friction slows you down.

a)

harder

b)

hardly

c)

hard

d)

harded

6. A planet's gravity is determined by its own size, or …… .

a)

kilograms

b)

mass

c)

long

d)

satellite

7. The term force means anything that causes the …… or motion of an object to change.

a)

shape

b)

square

c)

triangle

d)

bolt

8. The force is measured in …… .

a)

miles

b)

hertz

c)

newtons

d)

km per hour

Part 2. Simple and Complex Machines