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What is it and where does it come from? PowerPoint PPT Presentation


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Electricity . What is it and where does it come from? . Be safe around electricity. Electricity can be very dangerous. You should never put anything into electric sockets, except plugs. . Never touch appliances, wires or electrical switches with wet hands or feet. . Sources of electricity .

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What is it and where does it come from?

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What is it and where does it come from l.jpg

Electricity

What is it and where does it come from?


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Be safe around electricity

Electricity can be very dangerous. You should never put anything into electric sockets, except plugs.

Never touch appliances, wires or electrical switches with wet hands or feet.


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Sources of electricity

There are many sources of electricity such as:

Fossil fuels: coal, oil and wood.


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What is electricity and how is it made?

Electricity is a kind of energy. It is made in power stations.

Electricity is also made in batteries.

How do you think electricity is connected to our homes?


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How mains electricity works

The electricity produced in power stations is carried through wires into buildings.

This is called mains electricity

and we can connect to it by using a plug.


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How batteries work

Inside a battery are two different chemicals. When you put a battery into an appliance a circuit is made.

The two chemicals begin to change into new chemicals. As they change an electrical current flows along the circuit making the appliance work.


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Why do we need electricity?

In the modern world we rely on electricity for nearly everything.

We need it for important things like:

lighting

refrigerators

heating

What type of electricity do these appliances use?


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Things that use battery power

Can you think of appliances that use batteries?


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Things that use mains electricity

What can you see in this classroom that uses mains electricity?

What things do you have at home that use mains electricity?


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Independent activity

Cut out and sort the pictures under the correct columns. Label the effects of the electricity.

Blue and green tables write a sentence describing the effect. E.g. The mains electricity causes the iron to heat up so it can iron the wrinkles out of clothes.


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