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План урока по английскому языку на тему " Batteries "

«Утверждаю»

Date: Зам.директор по УР

Бисалиева Ж.Е____

«___»________20___г

Lesson № __

Тhe theme of the lesson: Batteries

The aims of the lesson: Активизировать в речи учащихся использование новой лексики, связанную с батареями.

Задачи:

1) читать текст с пониманием основного содержания

2) восринимать текст на слух, добиваясь в случае необходимости понимания с помощью переспроса, уточняющих реплик;

3) повторение лексического материала

The type of the lesson: Combined lesson

Methods of the lesson: showing, explaining, individual, group work

The visual aids: lecture, pictures.

Connection of the subjects: Physics, Russian.


Procedure of the lesson:

I. Organization moment: Good morning? Glad to see you! How are you? What date is it? Who is absent today? What problem has he (she)? Are you ready for the lesson? Let’s start!

II.Brainstorming. Let’s play a game “Guess the word”. The first task is trying to guess “What are we going to speak about at our lesson?”

Betsaetir -Batteries C:\Users\adm\AppData\Local\Temp\FineReader11\media\image59.jpeg



III. Phonetic Drill.


IV. Checking up homework .

V. Demonstration of the new language:

A)Vocabulary:

Words to the text


  1. Source-источник

  2. Cell-элемент

  3. Flashlight-сигнальный огонь

  4. Plate-пластинка

  5. Acid-кислота

  6. Copper-медь

  7. Wire-проволока, провод

  8. Insulator-изолятор

  9. Rubber-резина, каучук

  10. Tape-лента, тесьма

  11. To use-использовать

  12. To compose-составлять

  13. To fill-наполнять




  1. To connect-соединять

  2. To flow-течь

  3. To convey-переправлять

  4. To surround-окружать

  5. To remember-помнить

  6. Common-общий, частый

  7. Portable-переносной

  8. Dry-сухой

  9. Wet-мокрый

  10. Dissimilar-несходный

  11. Sulphuric-серный

  12. Faulty-неисправный

  13. Dangerous-опасный



B) read the text “BATTERIES”

Batteries as sources of electrical energy are the result of a long series of experiments which started with the discoveries of Alessandro Volta, аn Italian scientist, more than one hundred years ago.

Today battery cells are manufactured in two common forms: (1) dry cells, used in flashlights, portable radios, clocks, cameras and (well) (2) wet cells, used in automobiles, airplanes, boats, etc.

The voltaic cell, as shown in Fig. 9, is composed of three parts: a pair of dissimilar metal plates called electrodes, a dilute acid solution called the electrolyte, and a nonconducting container called the cell.



C:\Users\User\Pictures\2017-04-10\Сканировать3.JPG

In a glass container filled with sulphuric acid there are two plates: one copper and the other zinc. If the two plates are connected by a copper wire, electricity will flow through it from the copper plate to the zinc plate.

This may be shown by the wire becoming hot. If an ammeter is connected between the plates or electrodes, as they are now called, it will indicate that an electric current is flowing.

The electrode from which electricity flows is termed the positive electrode and the receiving electrode is termed the negative electrode. Thus for the voltaic cell the copper plate is the positive electrode and the zinc plate the negative electrode. A copper wire will convey electricity and is called an electrical conductor. Copper, aluminum and silver are outstandingly good conductors. Conductors must be surrounded by protective material which does not conduct electricity and prevent it to leak away. Materials which do not conduct electricity are called electrical insulators; there are many common examples—glass, wood, rubber, some plastics, “insulation” tape.

Remember that faulty insulation is dangerous and leads to unwanted electrical flow and probably to local overheating.
One common form of cell is shown in Fig. 9. If two or more cells are connected together, they form what is called a battery (Fig. 10).
In this diagram the battery is composed of four dry cells connected in series. By series connection it is meant that the (+-) terminal of one cell is connected to the ( —) terminal of the next. The purpose in connecting two or more cells in series is to obtain a higher
emf than that available with one cell alone.

C:\Users\User\Pictures\2017-04-10\Сканировать3.JPG










Each cell produces an
emf of 1.5 volts, so that if the voltmeter is connected to the points, it will indicate 1.5 volts between A and £ , 30 volts between A and C, 4.5 volts between A and D and 6 volts between A and E.
The common flashlight contains several dry cells connected in series.

V.Practice.

a)Выпишите из текста интернационализмы.
b)
Проанализируйте состав следующих слов:
flashlight, airplane, dissimilar, nonconducting, outstanding, unwanted, overheating, zinc-coated, container
c)Переведите словосочетания:
battery cell, dry cell, wet cell, metal plate, glass container, copper wire, zinc plate, a round carbon rod, liquid electrolyte, a dilute acid solution.
VI. Подберите существительные к глаголам:

1)to be composed of a) wires

2) to produce b) plates
3)to connect c) electricity
4)to conduct d) acid solution
5)to contain e) batteries
6)to consist of f) an electrolyte, electrodes
7)to surround g) dry cells
8)to manufacture

VII. Переведите на английский язык сочетания слов и предложения:
источник электрической энергии; состоит из трех частей; наполненный серной кислотой; электрод называется положительным, если ...;медная проволока проводит электричество. Материалы, которые не проводят электричество, называются изоляционными. Чем больше элемент, тем больше электрический ток. Элементы
, соединенные последовательно.
VIII. Вставьте пропущенные слова и выражения:

Copper, aluminum and silver, electrodes, electrolyte, between the plates or electrodes, two common forms, electrical energy, copper plate, electrical insulators, zink plate, three parts, battery, (+-) terminal of one cell is connected to the ( —) terminal of the next.

1. A battery is a source of . . . . electrical energy

2. Battery cells are manufactured in ... . two common forms

3. The voltaic cell is composed of ... . three parts

4. Dissimilar metal plates ... . electrodes

5. A dilute acid solution ... . electrolyte

6. If an ammeter is connected ... . between the plates or electrodes

7. The positive electrode is . . . . copper plate,

8. The negative electrode is ... . zink plate,

9. ...are good conductors. copper, aluminum and silver

10. Cells connected together form ... . battery

11. Series connection means . . . .

(+-) terminal of one cell is connected to the ( —) terminal of the next.
12. Materials which do not conduct electricity are called …. electrical insulators

IX. Выполните следующее задание:
Describe the battery shown in Fig. 10.
X. Battery Installation

  • Turn the cordless handset off before battery installation.

  1. Turn the antenna to the right and pull it out.

  2. Remove the screw cover on the rear bottom side and release the screw.

  3. Open the rear handset cover and change the battery.

  4. Assemble the rear handset cover.

To charge the battery

Place the cordless handset on the charger.

Charge the battery in the cordless handset for about 8 hours before initial use.

  • When the battery gets exhausted, warning tones will sound. Then, place the cordless handset on the base unit to recharge the battery.



THE CARE OF BATTERI

There are two other precautions, which should be observed in the care of batteries. First, the top of the battery must be kept clean and the terminals should be greased lightly. As the acid is extremely corrosive it will damage metal parts quickly and will cause burns on hands and clothing. Wool is not rapidly attacked by the acid so battery handlers often wear woolen clothing. The second precaution is to fill the battery up to the proper point with pure distilled water only. If tap water is used the battery will fail prematurely. In the aircraft non- spillable batteries the level in the cells should be up to the bottom of the filler neck and no higher. In all batteries the water level should cover the plates and will usually be about a quarter to a half inch over the plates.

Есть две других предосторожности, которые должны быть соблюдены на попечении батарей. Сначала, вершина батареи должна быть сохранена чистой, и терминалы должны быть смазаны жиром слегка. Поскольку кислота является чрезвычайно коррозийной, это повредит металлические части быстро и причинит ожоги на руках и одежде. Шерсть быстро не атакована кислотой, так что тренеры батареи часто носят шерстяную одежду. Вторая предосторожность должна заполнить батарею до надлежащего пункта (точки) с чистой дистиллированной водой только. Если вода из-под крана используется, батарея будет терпеть неудачу преждевременно. В самолете non-spillable батареи уровень в ячейках должен быть до основания шеи наполнителя и не выше. Во всех батареях водный уровень должен закрыть (охватить) пластины и обычно будет о четверти (квартале) к половине дюйма по пластинам.









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Автор Тулепбергенова Гулмира Саматовна
Дата добавления 21.12.2017
Раздел Другое
Подраздел Другое
Просмотров 348
Номер материала MA-072811
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