fossil fuels and alternative energies

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Producing Electricity from Fossil Fuels and Renewable Sources it www.worldofteaching.com 100’s of free powerpoints

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reviews fossil fuels and alternative energies from a 9th grade environmental science class.

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Page 1: Fossil fuels and alternative energies

Producing Electricity from Fossil Fuels and Renewable

Sources

Visit www.worldofteaching.comFor 100’s of free powerpoints

Page 2: Fossil fuels and alternative energies

Generating Electricity

For many years, we have generated electricity in much the same way:

We can also use the heat from NUCLEAR REACTIONS to make the steam.

Page 3: Fossil fuels and alternative energies

Nuclear fuels become hot without burning but the most commonly used fuels are burned to make heat. These are:

COAL, OIL and NATURAL GAS (Methane)

Page 4: Fossil fuels and alternative energies

These fuels were dug out of the ground. They had taken millions of years to make and so are called FOSSIL FUELS and are NON-RENEWABLE.

COALMade from the remains of plants which died millions of years ago

Page 5: Fossil fuels and alternative energies

OIL and NATURAL GAS (Methane)

Even though it was not made from dead plants or animals, nuclear fuel is considered to be a fossil fuel because it comes from the ground and is running out.

Made from the decayed remains of sea creatures which died millions of years ago

Page 6: Fossil fuels and alternative energies

All these fossil fuels are running outand burning them increases carbon dioxide in the atmosphere which increases the GREENHOUSE EFFECT, causing GLOBAL WARMING.

Some fossil fuels contain SULPHUR and when they burn this becomes SULPHUR DIOXIDE, a poisonous gas which reacts with water in the atmosphere to form SULPHURIC ACID or ACID RAIN.

Page 7: Fossil fuels and alternative energies

To solve the problems of fossil fuels, we need to develop:

RENEWABLE FUELS such as BIOMASS (Wood etc).

RENEWABLE forms of energy such as:

Wind

Quick-growing plants can be burnt in power stations instead of fossil fuels but plants can also be grown to produce oils or sugars to make alcohol which can be used as a fuel like petrol.

Page 8: Fossil fuels and alternative energies

Hydroelectric schemes

These use the GPE of water on hills to generate electricity as it flows downhill.

Page 9: Fossil fuels and alternative energies

Special versions of this can be used to produce energy quickly on demand.

Page 10: Fossil fuels and alternative energies

Tidal Power.

Page 11: Fossil fuels and alternative energies

Wave Power 1.

Page 12: Fossil fuels and alternative energies

Wave Power 2

Page 13: Fossil fuels and alternative energies

Solar

Page 14: Fossil fuels and alternative energies

Solar 2

Page 15: Fossil fuels and alternative energies

Solar 3

Page 16: Fossil fuels and alternative energies

Geothermal

In certain parts of the world, heat from the Earth can be used to produce steam to power turbines and heat homes.