Презентация на тему Electricity

electricity.




ELECTRICITY

for producing electricity
- Energy or force that can be

used to do work
- A substance able to attract iron, either natural or by means of electric current
- A flow of electricity through something or along a wire or cable
- A supply of electric current for heating, lightning, etc
- An engine or motor whose driving-wheels turned by a current of water, steam or gas
- A closed path for an electric current

current

electricity

circuit

power

generator

magnet

turbine

to hear them pronounced and used in a sentence.

Translate these sentences.

ELECTRICITY

ELECTROMAGNET

GENERATOR

many details as possible

around 500 BC. They had discovered that a gold

colored
material called amber could be made to attract small objects,
like bits of a feather, when the amber had been rubbed with
a piece of fur.
Ben Franklin discovered the electricity in
lightning in 1752, although nobody knows exactly how he
did his experiment. Franklin was a careful scientist, and
would have known that flying a kite in a thunderstorm could
have deadly effects,. Both the ancient Greeks
and Ben Franklin had discovered examples of naturally
occurring electricity. Their discoveries were amazing in
their time, but not really useful yet. One of the first practical
uses of electricity occurred in England in 1858, when
electricity was first used to power the lamp in a house.  

Now read some information and compare it with the information from the cartoon. Is there something new for you?

with their symbols.
Cell, 6V battery,

wire, bulb, switch, ammeter, voltmeter, ohmmeter

a b c d





e f g h

power industry, and to provide communication and transportation. Home

uses of electricity include heat and light, as well as power to run appliances and games. Factories use electricity to power the machines used to produce all kinds of goods. Communication systems that depend on electricity include telephone service, television and radio, and the Internet. There are streetcars and subways powered by electricity. Other types of transportation, such as planes and ships, depend on electricity for navigation equipment.

Read some more information and complete the following diagram.

your hair
Current
Flows around circuit
E.g. turn on light

to turn out (of)
closed
step-down
alternating
final
conductor
conduction
variable
disadvantage
parallel
negative

To turn into (on)
Insulator

To decrease
Direct
Initial
Opened
Step-up
Advantage
Series
Positive
Resistance
Constant

or removes electrons
Object becomes charged
Like objects repel, unlike attract

= continuous path for electrons to flow
Needs energy supply
Energy

user

Find the English equivalents in B to the

Russian words in A. A B

Выпрямитель
Обмотка
Первичный
Передавать
Нить накала
Частота
Переменный
Сопротивление
Емкость
Измерительный прибор
Клемма
Заряд
Цепь
Падение напряжения
Обрыв
Повреждение

Capacitor
Insulator
Early
To transmit
Coil
Alternation
Different
Trouble
Capacity
Insulator
Battery
Line
Voltage
Distance
Plane
trouble

Condenser
Voltage
Primary
To keep
Filament
Resistance
Direct
Function
Value
Meter
Terminal
Charge
Circuit
Trouble
Short
advantage

Rectifier
Winding
Secondary
To store
Gap
Frequency
Alternating
Resistance
Main
Current
Resistor
Short
Current
Voltage drop
Open
load

continuously change direction forward and back at 60 Hz
DC

? Direct current ? charges move in one direction

a quiz
http://www.neok12.com/quiz/ELECTR01

http://www.neok12.com/quiz/ELECTR04

http://www.neok12.com/quiz/ELECTR02

http://www.neok12.com/quiz/ELECTR05

2030 using the model:
Generation of electricity

from gas in 2030 will be higher than in 2002.

flowing directly through
the turbines to power the generators.

plant.

plants. This one produces 1/7
of the overall electricity

outcome of Russian nuclear power plants, so it is a big one.

NUCLEAR POWER PLANT

heat to heat water, which turns into steam, which

goes through a turbine, which spins...turning the copper armature inside the generator and generating an electric current

waves on the sea. But it is not easy

to get it.
A wave power station needs to be able to stand really rough weather,
and yet still be able to generate power from small waves. This source
of energy is renewable – the waves will cause whether we use them or not.

for heating houses. Solar cells make electricity from sunlight.

Solar cells are expensive. Solar power isn’t much use unless you live somewhere sunny. It doesn’t cause pollution and doesn’t need fuel.

that are hooked up to a generator.
Wind power

is renewable as well. It doesn’t cause pollution, doesn’t need fuel.
It is necessary to put generators them where winds are reliable.

in Italy, and the second was in New Zealand.

The centre of the Earth is about 6000 degrees Celsius - hot enough to melt rock. Even a few kilometres down, the temperature can be over 250 degrees Celsius. In general, the temperature rises one degree Celsius for every 36 metres you go down. In volcanic areas, molten rock can be very close to the surface.

Describe the work of such power station.

of generating electricity
ADVANTAGES
-
-
-
-
-
-
-
-
DISADVANTAGES
-
-
-
-
-
-
-
-