Advantages and Disadvantages of Energy - PowerPoint Presentation

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Advantages and Disadvantages of Energy Resources

LESSON OBJECTIVE:To be able to compare renewable and non-renewable resources in terms of advantages and disadvantages.

TASK – previous learning

:List 3 ways we can generate electrical energy.Describe how 2 of these generate electricity.Explain how 1 of these would be more beneficial to coal burning.

30/11/2017

Success Criteria

Grade C: An explanation of the advantages or disadvantages of energy resources.Grade B: A comparison between the different energy resources in terms of advantages and disadvantages.Grade A: A judgement into which resource is the best with evidence to back up your decision.

Extra bonus: Develop exam technique and How Science Works

LESSON OBJECTIVE:To be able to compare renewable and non-renewable resources in terms of advantages and disadvantages.

CONTEXT

The Mayor of Copeland wishes to provide people living in the area a good, clean energy resource to meet their energy needs for the future. He has asked you to provide evidence of which resource is better for the environment and the Copeland landscape.

KEYWORDS:

Noise pollution visual pollution atmosphere waste

Generating electricity

OK, so you gathered the information last lesson.Essentially:Steam is produced from boiled water and turns a turbine to generate electrical energy.

This happens with the burning of Coal and Biomass

and following nuclear fission.Solar panels can convert light energy directly into electrical energy.Water in all three methods uses liquid water to turn a turbine to generate electrical energy.LESSON OBJECTIVE:To be able to compare renewable and non-renewable resources in terms of advantages and disadvantages.KEYWORDS:Noise pollution visual pollution atmosphere waste

1: The pie charts show the relative proportions of electricity generated in Japan from different energy sources in 1975 and 2005.

Describe

and suggest a reason for 

two 

differences in the energy sources

used

in

2005 compared

with 1975.

Worth 2 marks – 2 minutes

LESSON OBJECTIVE:

To be able to compare renewable and non-renewable resources in terms of advantages and disadvantages.

KEYWORDS:

Noise pollution visual pollution atmosphere waste

If the concentration of greenhouse gases in the atmosphere doubles, the average temperature of the Earth will increase by up to 5 

°C over the next 100 years.

2: Mining for coal often releases large amounts of methane gas. Methane is both explosive and a greenhouse gas.

At the

Sihe

coal mine in China the methane is diverted to a gas burning power station where it is used to generate

electricity.

A newspaper reported a scientist as saying:

What has been stated in the newspaper?

          a fact            

or

            a guess            

or

           a prediction

Give a reason for your answer.

Worth 2 marks – 2 minutes

LESSON OBJECTIVE:

To be able to compare renewable and non-renewable resources in terms of advantages and disadvantages.

KEYWORDS:

Noise pollution visual pollution atmosphere waste

Advantages/disadvantages of coal power stations

ADVANTAGESGives out LOTS of thermal energyReadily availableDoes not produce nuclear waste

DISADVANTAGES

If burnt at high temperatures produces: Sulphur dioxide – acid rain Nitrogen oxides – acid rain carbon dioxide – global warming

LESSON OBJECTIVE:

To be able to compare renewable and non-renewable resources in terms of advantages and disadvantages.KEYWORDS:Noise pollution visual pollution atmosphere waste

ADVANTAGESProduces even higher energy output (1 million kWh)

Does not produce any toxic or greenhouse gases

Advantages/disadvantages of nuclear power stations

DISADVANTAGESProduces nuclear waste – which could take thousands of years to become safe.If disaster strikes – thousands or people/wildlife would be affected.

LESSON OBJECTIVE:

To be able to compare renewable and non-renewable resources in terms of advantages and disadvantages.KEYWORDS:Noise pollution visual pollution atmosphere waste

3: In the UK, nuclear fuels are used to generate about 21% of the total electricity supply.(

i)      What is the name of the process by which a nuclear fuel produces heat?(ii)     Explain how the heat released from a nuclear fuel is used to generate electricity in power stations.

LESSON OBJECTIVE:To be able to compare renewable and non-renewable resources in terms of advantages and disadvantages.

KEYWORDS:Noise pollution visual pollution atmosphere waste Worth 3 marks – 3 minutes

4: The graphs show how the amounts of coal and gas used to generate electricity changed between 1960 and 1990.

Describe these changes.Worth 4 marks – 4 minutes

LESSON OBJECTIVE:To be able to compare renewable and non-renewable resources in terms of advantages and disadvantages.

KEYWORDS:Noise pollution visual pollution atmosphere waste

How Do Solar Panels work?

Solar cells are used to capture the Sun’s light energy and transform it directly into electrical energy.

Solar cells are connected together to form solar cell panels.

Solar heating panels work in a similar fashion except water flows through them and the solar energy heats the water.LESSON OBJECTIVE:To be able to compare renewable and non-renewable resources in terms of advantages and disadvantages.KEYWORDS:Noise pollution visual pollution atmosphere waste

1 segment is a solar cell.

Advantages and disadvantages of solar panels

LESSON OBJECTIVE:To be able to compare renewable and non-renewable resources in terms of advantages and disadvantages.KEYWORDS:Noise pollution visual pollution atmosphere waste

ADVANTAGES

Useful where small amounts of electricity is needed (e.g. watches)Cost nothing to runNo pollution

DISADVANTAGES

Solar cells only converts <10% of solar to electrical

VERY expensive to buy

Lots of them are needed to generate enough power

Lots of sunshine needed

5: Different energy sources are shown in the box.

An ‘Eco-home’ is one which is friendly to the environment.Imagine you are designing an ‘Eco-home’ which can use any of the energy sources above to generate electricityChoose one non-renewable energy source from the box above that could provide the electricity supply to your ‘Eco-home’, but which would be 

unsuitable. Explain your answer.

Worth 2 marks – 2 minutesLESSON OBJECTIVE:To be able to compare renewable and non-renewable resources in terms of advantages and disadvantages.KEYWORDS:Noise pollution visual pollution atmosphere waste

6: The graph shows the power curve of a wind turbine.

Describe, in detail, how the power output of the turbine varies with the wind speed.

LESSON OBJECTIVE:To be able to compare renewable and non-renewable resources in terms of advantages and disadvantages.KEYWORDS:Noise pollution visual pollution atmosphere waste

Other renewable energy sources

LESSON OBJECTIVE:To be able to compare renewable and non-renewable resources in terms of advantages and disadvantages.KEYWORDS:Noise pollution visual pollution atmosphere waste

ADVANTAGES

Never run outNo greenhouse gases or acid rainNo radioactive waste

DISADVANTAGES

Produce greenhouse gases in manufacture

Wind turbines are unsightly (visual pollution) and are noisy to nearby people (noise pollution)

Tidal barrages affect river estuaries and impact habitats

Hydroelectric schemes use large reservoirs of water, often flooding habitats to create dams

Sometimes very expensive to produce and maintain

For or against?

FOR

About ¾ of the UK’s electricity comes from coal power stations and about ¼ is from nuclear power stations. Many of these stations are being closed. A new power station takes several years to build. The UK Government should start building now.

AGAINSTWe don’t want new power stations. They produce too much pollution. We can get our electricity from renewable devices like wind turbines and solar panels. We believe that renewable energy devices can provide enough electricity. We don’t need new power stations.TASK:Read the speech bubbles. Ask two others not on your table what they think and then read pp274 (‘Supply and demand’) ORANGE BOOKS before writing your argument – which one will you go with and why?LESSON OBJECTIVE:To be able to compare renewable and non-renewable resources in terms of advantages and disadvantages.KEYWORDS:

Noise pollution visual pollution atmosphere waste

Grade C: An explanation of the advantages and disadvantages of energy resources.

Grade

B

: A comparison between the different energy resources in terms of advantages and disadvantages.

Grade

A

: A judgement into which resource is the best with evidence to back up your decision.

Extra

bonus

: Develop exam technique and How Science Works