Renewable Energy

• Solar Energy• Advantages: Solar energy is free• Solar energy does not cause pollution.• Disadvantages:• Solar cells are expensive to make• Only a small amount of the solar energy is

converted to electrical energy.http://www.youtube.com/watch?v=Ja3-JW7cKos

Non- Renewable energy

• Examples: Oil, Coal, Gas, Turf• Advantages: Easy to get• Reasonably cheap• Disadvantages: Causes greenhouse gases to be

emitted.• Polluting the atmosphere.

http://www.youtube.com/watch?v=IG7L5lVoqy8

Hydroelectricity

• Advantages: Does not cause pollution.• Cost effective not expensive to produce electricity.• Disadvantages: Flooding can destroy plant and

animal habitats.• Building of dams can cause flooding in valleys

where people live. • http://www.youtube.com/watch?v=TW0Md5yrZI4

Wind Energy

• Advantages: Wind energy is free• Does not cause pollution.

• Disadvantages:• No electricity produced on calm days• Large windmills are noisy and spoil the beauty of

the countryside.• http://www.youtube.com/watch?v=Fsoa-EvOt7A

Nuclear Energy

• Advantages: Nuclear fusion would use a fuel in plentiful supply

• Would reduce the present level of greenhouse gases

• Disadvantages: Danger of explosion• Harmful effects of radioactive waste

Conserving Energy

• Switching off electrical devices• Install light saving bulbs• Use public transport, walk to school or cycle if

possible• Insulation reduces the need to use larger

amounts of energy such as oil.• Ireland imports nearly all the fossil fuels that

we use to generate electricity. This is unwise.