3. Answer these questions. Use the information from the text above.
1. Do batteries provide portable electricity? Prove your answer.
2. Where do people use small batteries?
3. Where do people use large batteries?
4. Give the scientific description of a battery.
5. Why does battery refer to a single cell?
6. Who invented the first battery? When did it happen?
7. How are batteries classified?
8. What is the function of batteries?
9. How are primary batteries designed?
10. How are secondary batteries designed?
4. Work with your partner and find in the text the English equivalents to the words.
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1. знать 2. труба, трубка 3. плейер 4. фонарь 5. свет 6. портативное электричество 7. на самом деле 8. форма 9. размер 10. колебаться от … до … 11. пуговица, кнопка 12. слуховой аппарат 13. наручные часы 14. тяжелый 15. подводная лодка 16. обеспечивать 17. электроэнергия 18. с тех пор как 19. изобретение 20. обычный, общий |
21. согласно 22. всемирный 23. промышленность 24. классифицировать 25. основной 26. категория 27. тип 28. менять 29. энергия 30. предназначать 31. один раз, единожды 32. выбрасывать 33. содержать 34. перезаряжать 35. дешевый 36. корпус 37. настенные (настольные) часы 38. снова, опять 39. описание 40. дорогой |
5. Match the terms and their definitions.
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Terms
|
Definitions |
|
1. EMF 2. torch 3. charge 4. battery 5. walkman 6. recharge 7. electrode 8. hearing aid 9. primary cell 10. electrolyte 11. secondary cell 12. electricity |
a) combination of cells for providing electrical energy b) put an electrical charge into a component such as a battery or a capacitor c) supply of electric current and voltage d) positive or negative connector which collects or emits a charge e) chemical which aids the flow of current between electrodes f) voltage produced by an electrical source (e.g. a battery) g) amplifying device which makes it easier for people with hearing difficulties to hear h) energy source which cannot be recharged i) restore the charge or energy to a battery j) energy source which can be recharged k) portable electrical device for producing a beam of light l) trade name of a popular type of personal player |
6. Complete the tables. Use the words from the text. Pay attention to the part of speech. Translate all words.
|
Noun |
Adjective |
|
Noun |
Verb |
|
1 |
advantageous |
|
13 |
aid |
|
2 |
powerful |
|
14 |
centre |
|
3 |
applicable |
|
classification |
15 |
|
4 |
central |
|
16 |
compute |
|
cord |
5 |
|
container |
17 |
|
5 |
shapeless |
|
18 |
cord |
|
7 |
electrical |
|
19 |
describe |
|
8 |
energetic |
|
estimation |
20 |
|
multiplication |
9 |
|
exchange |
21 |
|
10 |
exchangeable |
|
force |
22 |
|
11 |
forceful |
|
23 |
grow |
|
industry |
12 |
|
24 |
invent |
|
|
|
|
knowledge |
25 |
|
|
|
|
multiplication |
26 |
|
|
|
|
|
telephone |
|
|
|
|
power |
27 |
|
|
|
|
provision |
28 |
|
7. Label these diagrams of a cell with these terms:
a) current collector / carbon rod positive electrode electrolyte zinc can / jacket |
| |
|
b) a) brass cap b) carbon rod c) chemical mixture d) expansion space e) plastic seal f) porous cardboard g) zinc can |
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Language Study. Describing components
Two questions we may need to answer when we describe components are:
1. What is it called?
2. What does it do?
In other words, we need to be able to:
1. label components
2. describe their function
We can use these ways of labeling components:
It is called a Zinc-carbon cell.
It is known as a NiCad cell.
We can describe the function of components like this:
A cell provides electricity.
Cells change chemical energy into electricity.