Welsh Baccalaureate Advanced Diploma

PSE Session/Sesiwn :

Element 4: Sustainable development Key issue 1: The links between

society, the economy and the environment.

Renewable & Sustainable energy.

Agenda:

What is renewable and sustainable energy?Why do we need these?Types of renewable energy sourcesHow we use these energy sources

Energy What is it?Look around you. Is anything moving?

Can you hear, see or feel anything? YES- This is because something is making something happen, and most probably

there is some power at work. This power, or ability to make something happen is

what we call energy. It makes change possible.

Sustainable energy

Sustainable energy is the sustainable provision of energy that meets the

needs of the present without compromising

the ability of future generations to meet

their needs.

What is renewable energy?Generated from:

SunlightWaterWindRainTides

Geothermal sourceBiomass sources

Why do we need these?Lack of non-renewable energy

Coal 150 -170 years

Fossil Fuel 30-40 years

Nuclear energy Long time, but low level of social acceptability

Why do we need these?Environmental problems

Water pollutionAir pollution

Nuclear waste

Why do we need these? To avoid disasters

Types of renewable sources1. Solar energy

Comes from the sun

To heat or light buildings, to generate electricity, to heat hot water

Passive and Active solar energy

The sun is free but the solar cells and other equipment are very expensive (reducing slowly)

Varies with the season and weather

The problem with solar power?

You need the sun.

Types of renewable sources2. Wind power

Windmills – to pump water or grind grainWind turbines – to generate electricity

World’s fastest growing energy technology1% of the world’s electricity

It requires big territories

What is bad?The wind does NOT always blow!

Resource:

http://www.bbc.co.uk/news/uk-wales-politics-19415921

Types of renewable sources3. Hydro power

Uses water to power machinery or make electricity

It gives 20% of the world’s electricity and 63% of the energy from renewable sources

Hydroelectric energy, Micro hydro system, Damless hydro system, ocean energy

http://www.bbc.co.uk/news/uk-wales-north-west-wales-21604951

Recap:

What is renewable and sustainable energy?Why do we need these?Types of renewable energy sourcesHow we use these energy sources

PowerPoint Presentation:Working with the others in your group, research and prepare a PowerPoint presentation on your given forms of renewable energy to include:A descriptionExamples of the renewable energy sourcesPros and cons for the different energy types.

To be presented to the rest of the class NEXT WEEK.