2. Electicity

Question 1

Name 4 sources for electricities (4)

Answer 1

~wind
~sun
~nuclear power
~coal
~gas
~water

Question 2

In short, how is electricity made in power stations (5)

Answer 2

~power stations burn fuels in furnaces
~The water pipe boils the water into pressurized steam
~steam turns the turbine
~connected to a shaft
~driving a generator

Question 3

Besides coal and oil, what other metal is used as a fuel and what type fuel is it (2)

Answer 3

Uranium, nuclear fuel

Question 4

What is an advantage of hydro-power (1)

Answer 4

It doesn’t hurt the environment, produces no waste

Question 5

Shortly explain the transmission of electricity from power stations to home (5)

Answer 5

~ electricity flows from the station through power lines
~ Then the electricity is changed by the transformer
~ then transferred by network transmission lines
~ after electricity is removed by substation near the homes
~distribution lines take electricity to homes

Question 6

Define generator (1)

Answer 6

A huge apparatus that makes electricity at power stations

Question 7

Define pylons (1)

Answer 7

Strong steel towers carrying electrical wires safely high above the ground.

Question 8

Define transformer (1)

Answer 8

CHanges the strength of electricity

Question 9

Define turbine (1)

Answer 9

Machine worked by water, steam or wind pushing against blades.