3. Answer the questions:

1. What is transmitted to the car so the wheels rotate?

2. How many cylinders have most automobile engines?

3. What is the source of power?

4. What can you say about internal combustion engine?

4. Fill in missing words:

1. This burning, or combustion, takes place an ( большаяскорость).

2. Gasoline is (сгораетвнутрицилиндров) or combustion chambers.

3. Power that makes the ( колёсавращаются) and the car move.

4. The high pressure thus created causes a ( валповорачивается) or rotate.

5. Most (автомобильныедвигатели) have four or six cylinders.

5. Translate into Russian:

• car moves

• high pressure

• internal combustion engine

• wheels go around

• source of power

• rotary motion

• sixteen cylinder engines

• transmitted to the car

• Most automobile engines

• within its cylinders

Topic “STEAM ENGINE.”

1. Vocabulary.

steam chest – паросборник

the more...the more - чем больше….тем больше

mostly - главным образом, большей частью

to invent – изобретать

to boil - кипеть

pipe - труба

steam - пар

valves - клапана

piston - поршень

to reach - достигать

pressure - давление

stroke - ход

speed - скорость

opening - отверстие

2. Read and translate the text.

STEAM ENGINE.

The steam engine was the first high-speed engine ever invented. The principle of the steam engine is simple. When water is boiled, it changes in to steam. The more the steam is heated, the more pressure it has.

A steam engine has some important parts. One is a boiler where fire turns water into steam. The steam goes through a pipe to the other important part - the steam chest with a cylinder and a piston in it. There are valves, or openings, in the steam chest. As the piston moves in the cylinder, it opens and closes the valves automatically, so that fresh steam enters just when the piston has reached the end of its stroke. A rod from the piston is connected to a wheel.

Now steam engines are mostly used in locomotives.