The smart way to improve grades

Comprehensive & curriculum aligned

Affordable pricing from £10/month

Power Stations and the National Grid

In this worksheet, students learn how electricity is generated in power stations and the distribution of electricity through the National Grid.

'Power Stations and the National Grid' worksheet

Key stage:  KS 4

Curriculum topic:  Physics: Electricity

Curriculum subtopic:  Domestic Supply

Difficulty level:  

down

Worksheet Overview

QUESTION 1 of 10

The National Grid distributes electricity around the United Kingdom as high as 400,000 Volts (or 400 kV). High voltage means that there is an energy saving - distribution costs are less and electricity is cheaper for consumers. Transformers used in the National Grid reduce or increase the voltage. Large industries use 33 kV electricity; hospitals, schools and smaller industries use electricity at 11 kV, and houses, shops and farms at 240 V. Some of the energy is lost as heat to the environment. The diagram below shows National Grid pylons:

 

 

Electricity is produced at power stations. The diagram below shows what happens at different parts of a power station. Coal burns in the furnace and water steam is produced in the boiler. The steam turns the turbine under high pressure and the generator generates electricity. Eventually, a transformer changes the voltage so electricity can be distributed through the National Grid.

 

Through what is electricity distributed around the UK?

What is the voltage that electricity is produced in a power station in kV?

400,000

4,000

400

What voltage is used by houses in the UK?

11 kV

33 kV

240 V

What do tranformers do?

they generate electricity

they step up (increase) or step down (decrease) the voltage

they distribute electricity

Why is high voltage useful? Three options apply.

it reduces energy loss

it reduces time taken to generate electricity

it is less dangerous

it reduces distribution cost

it ensures electricity is cheaper for consumption

Where is coal burnt in a power station?

in the furnace

in the turbine

in the generator

Why is there a boiler in a power station?

it transforms voltage

it generates electricity

steam that turns the turbine is produced in the boiler

Where does the energy needed to produce steam in the boiler come from?

from the turbine

from the furnace where coal is burnt

from the generator

What does the generator do in a power station?

it decreases energy loss

it turns the turbine

it makes electricity

What happens to the electricity after the transformer?

it is distributed to consumers

it has its voltage changed

it is lost to the environment

  • Question 1

Through what is electricity distributed around the UK?

CORRECT ANSWER
National Grid
the National Grid
EDDIE SAYS
Electricity is distributed around the UK through the National Grid. Note the use of capital letters for both words.
  • Question 2

What is the voltage that electricity is produced in a power station in kV?

CORRECT ANSWER
400
EDDIE SAYS
Electricity is produced in a power station at 400 kV. This is the same as 400,000 V (Volts).
  • Question 3

What voltage is used by houses in the UK?

CORRECT ANSWER
240 V
EDDIE SAYS
Houses in the UK use electricity at 240 V. 'V' for voltage must always be written in capitals.
  • Question 4

What do tranformers do?

CORRECT ANSWER
they step up (increase) or step down (decrease) the voltage
EDDIE SAYS
Transformers step up (increase) or step down (decrease) the voltage.
  • Question 5

Why is high voltage useful? Three options apply.

CORRECT ANSWER
it reduces energy loss
it reduces distribution cost
it ensures electricity is cheaper for consumption
EDDIE SAYS
High voltage reduces energy loss, reduces distribution cost and ensures electricity is cheaper for consumption.
  • Question 6

Where is coal burnt in a power station?

CORRECT ANSWER
in the furnace
EDDIE SAYS
Coal is burnt in the furnace of a power station.
  • Question 7

Why is there a boiler in a power station?

CORRECT ANSWER
steam that turns the turbine is produced in the boiler
EDDIE SAYS
The boiler in the power station is necessary because it produces the steam that is used to turn the turbine.
  • Question 8

Where does the energy needed to produce steam in the boiler come from?

CORRECT ANSWER
from the furnace where coal is burnt
EDDIE SAYS
The energy that is needed to produce the steam (which then turns the turbine) comes from the furnace.
  • Question 9

What does the generator do in a power station?

CORRECT ANSWER
it makes electricity
EDDIE SAYS
The generator makes electricity.
  • Question 10

What happens to the electricity after the transformer?

CORRECT ANSWER
it is distributed to consumers
EDDIE SAYS
After the transformer, electricity is distributed to consumers through the National Grid. Option 1 is correct, but there is some truth to Option 2 (it has its voltage changed) because it may need to be 'transformed' again depending on who it will go to.
---- OR ----

Sign up for a £1 trial so you can track and measure your child's progress on this activity.

What is EdPlace?

We're your National Curriculum aligned online education content provider helping each child succeed in English, maths and science from year 1 to GCSE. With an EdPlace account you’ll be able to track and measure progress, helping each child achieve their best. We build confidence and attainment by personalising each child’s learning at a level that suits them.

Start your £1 trial

Start your trial for £1