IV. Analyze

1. Match the words with their Russian equivalents

1 to reduce	применять, использовать
2 motion	бассейн, водохранилище
3 mechanical	получать, приобретать
4 to suppose	движение
5 to lift	отпускать цилиндр
6 to release a cylinder	пружина, рессора
7 spring	механический
8 to gain	полагать, думать, предполагать
9 reservoir	поднимать
10 to apply	понижать, сокращать

2. Give the English equivalents

пружина, рессора ……………………………………………………………….…….

отпускать цилиндр…………………………………………………………………….

водохранилище………………………………………………………………………..

использовать…………………………………………………………………………..

сокращать ……………………………………………………………………………..

кинетический …………………………………………………………………………

механический …………………………………………………………………………

предполагать…………………………………………………………………………..

закачивать ……………………………………………………………………………..

пружина………………………………………………………………………………..

3. Put the words in the correct word order

1. energy / types / two / are / of / mechanical / there / .

2. coiled / toys / stored / from / spring / operate / in / a / some / energy / .

3. when / a / energy / is / motion / it / has / moving / car / .

4. patrol / is / engine / in / the / burned / and /kinetic / the /car / this / gives / energy /.

5. when / the / brakes / kinetic / the / reduced / the / car’s / applies / energy / is / driver / .

6. kinetic / a / substance / is / moving / the / liquid / has / if / energy / .

7. the / generator / turns / a / turbine / electricity / so / produces / and / .

4. Prove the following statements

1. There are two types of mechanical energy.

2. Sometimes potential energy is called gravitational potential energy.

3. When the driver applies the brakes the car's kinetic energy is reduced.

5. Match the words with their English definitions

potential energy	the action or process of moving or being moved
kinetic energy	think or assume that something is true or probable but lack proof or certain knowledge
reservoir	raise to a higher position or level
spring	make smaller or less in amount, degree, or size
gravitational	bring or put into operation or use
motion	the energy that an object has as a result of moving
to apply	relating to the force of gravity
to reduce	a large natural or artificial lake used as a source of water supply
to lift	a long thin piece of metal in the shape of a coil that quickly gets its original shape again after you stop stretching it
to suppose	the energy that a body or system has stored because of its position or condition