Task 12. Choose one of the following quotations and explain what it means. Write a short paragraph (60-80 words). Express your point of view

“Science is facts; just as houses are made of stones, so is science made of facts; but a pile of stones is not a house and a collection of facts is not necessarily science.”

Henri Poincare (French mathematician & physicist)

“Our scientific power has outrun our spiritual power. We have guided missiles and misguided men.”

Martin Luther King Jr. (US black civil rights leader & clergyman)

“There are in fact two things, science and opinion; the former begets knowledge, the latter ignorance.”

Hippocrates (Greek physician)

UNIT 9

ELECTRICITY AND ELECTRICAL DEVICES

LEAD - UP ACTIVITY

Short discussion.

1. Can you live a day without electrical devices?

2. What electrical devices are the most widely-used in your house?

3. What do you know about the history of electricity?

4. What rules of using electrical devices we must remember?

5. What new electrical devices can we imagine in the nearest future?

2) Do a quiz on the general concepts of electricity. Choose the correct answer for each question:

1. Static electricity occurs when:

a) two metals are connected to a battery

b) different insulators are rubbed together

c) the weather is very humid

2. Examples of static electricity include:

a) lightning

b) the Van de Graaff generator

c) both of the above

3. A flow of electrons along a wire is called:

a) electromagnetism

b) static electricity

c) current electricity

4. Substances that allow electricity to pass easily through them are:

a) conductors

b) resistors

c) insulators

5. Substances that do not allow electricity to pass through them are:

a) conductors

b) cells

c) insulators

 

READING

 

1. Read and translate the following words:

fascinated, physicist, conductivity, abandoned, submerged, decomposition, galvanometer, pioneering, inventors, electrolysis

 

2. Read and translate the text: