ks3whereenergy

8/8/2019 ks3whereenergy

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ENERGY

Where does our energycome from?


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Where does the energycome from for?


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OR?


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OR?


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OR?


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ENERGY for the these

things come from Energy Resources that areconverted into electricity


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Energy Resources can bedivided into 2 categories:

1. Non-Renewable Resources, e.g. coal or oilOnce used these resources cannot beused again

2. Renewable Resources, e.g. wind or solarThese resources can be used over andover again


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Non-Renewable Resource,e.g. COAL

Coal is formed from dead vegetation that

has been buried in mud for millions ofyears First forming PEAT Then the PEAT turns into COAL over time

as more water and air are squeezed out,due to the weight of more earth building upon top of it.


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Non-Renewable Resource,e.g. Oil

Oil is formed from the remains of plankton

(small plants and animals) that live in thesea millions of years ago Oil is formed when the dead plankton are

covered by mud on the sea floor and slowly

change into oil This change happens due to the actions of

heat and microbes


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Non-Renewable Resource,e.g. Gas

Natural gas is found underground,

often in the same places as oil A mixture of gases make up natural

gas

I

t is mainly made up of methane gas


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Non-Renewable Resource

Have you heard of LIGNITE?

Lignite is sometimes called, Brown Coal

Basically, lignite formation is half-way

between peat and coal


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Non-Renewable Resource, e.g.Lignite

Using LIGNITE is a controversial issue in

Northern Ireland:

Should Northern Ireland use its resource of

Lignite, found underground in the Ballymoneyand Lough Neagh areas?


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Why is mining Lignite controversial?

Getting it out of the ground would be by open-castmining, which involves changing the landscape

Mining lignite would cause visual and noise

pollution, as well as, disruption to the localecosystem To burn lignite in order to generate electricity

would involve building a power station and wouldcontribute to air pollution

Pollutants released could affect peoples health Impact for the people who live, farm and have

businesses on the land that would be mined


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Why is the term,FOSSILFUELS

used for coal, lignite, oil andgas?


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Renewable Resource,e.g. Wind

Wind is freely available

Turbines are needed to harness thisresource

Hill-top/exposed areas are good


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Renewable Resource,e.g. Solar

There is more sun available in south-facing

locations Light and heat from the sun can be used


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Renewable Resource,e.g. Biomass & Biogas

Animal and plant waste can be used to

produce energy Biogas is gas given off when material

decays

Wood from sustainable

sources can be used


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Renewable Resource,e.g. Hydro

The energy from moving water

in rivers - can have its energyharnessed


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Renewable Resource,e.g. Wave & Tidal

The energy from movingwater at sea wavesand tidal movement can be used


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Where does our energy comefrom?

It comes from different energy

resources Some of the resources are known as

non-renewable, e.g. coal

Others are known as renewable, e.g.wind

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