Energy

Fuel is a store of energy

Fossil fuels (coal, oil,

gas)

Nuclear fuel

Others like wood,

rubbish

… and using steam to spin a magnet.

This happens by boiling water to steam…

Fuel is turned into electricity

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Energy sources

RenewableReplenished at the rate we use

it.

Non-renewableWe use it faster

than it is replenished

Fossil fuels are the remains of buried plants and animals

Deep in the earth they were cooked for millions of years to form coal, oil and gas.

They cause climate change by releasing CO2

Environmental damage:Acid rain

Polluting smokeOil spills

Non-renewableOnly about 15 countries

have most of the oil

Prices are pushed upOther prices also go up, such as food, clothing.

transport.

Problems with fossil fuels

1. Humans release extra CO2 into the atmosphere by burning fossil fuels.2. The extra CO2 traps heat from the Sun, making the Earth warmer.

p. 83: q. 5p. 85: q. 4-5