1. Where is electricity generated?2. How are fossil fuels created?3. What type of energy is stored in a fossil fuel?4. What is the purpose of the fossil fuel in a

power station?5. Explain how the generator is turned in a fossil

fuel fired power station

STARTER – DO ON SHEET AND STICK IN BOOK

AQA: P1

THE NATIONAL GRID

• To understand how the National Grid is used to transport electricity around the country

TODAY’S OBJECTIVE

TO SUCCEED

C

D

E State how electricity is transported around the country

State the different parts of the National Grid and explain their functions

Analyse the pros and cons of transportingelectricity through the National Grid

LOCAL POWER STATION?

Discussion

• How does electricity made at a power station reach Langley Mill?

• Does the electricity have to be changed in some way as it is sent?

Set up in 1926, the National Grid is a network of power stations and cabling that carries electricity around the

country

Electricity is generatedat power stations and distributed around the UKthrough a vast circuitof electrical cabling

THE NATIONAL GRID

http://www.youtube.com/watch?v=_AIFoBRIny0

TRANSPORTING ELECTRICITY-TAKE NOTES!

Step-Up Transformer

Step-Down Transformer

This is how our National Grid

Works!!

Increases the voltage so

current can be lower. Why?

Decreases the voltage so

current can be higher.

Why?

• Cut out and recreate the national grid in the form of a poster.

• Follow the instructions on the sheet. • You can make it as complicated or as simple as

you like. • Keep bits of paper on desk, or take to the bin.

ACTIVITY

1.Cut out the pictures

2.Arrange them into a diagram of the National Grid

3.Draw cables

4.Label what is happening at each stage

Beat the teacher-• A step-up transformer reduces the

voltage through the transmission cables, which increase the current.

• This will make the transfer of electricity more efficient as less energy is lost as light.

• Step-low transformers are essential as they reduces the currant to a safe working value for consumers.

Can you find 7 mistakes and beat the teacher?

To know how electricity is generated and transferred to our homes.