Title: Producing Electricity from Fossil Fuels and Renewable Sources
1Producing Electricity from Fossil Fuels and
Renewable Sources
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2Generating 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.
3Nuclear fuels become hot without burning but the
most commonly used fuels are burned to make heat.
These are
COAL,
OIL and
NATURAL GAS (Methane)
4These 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.
Made from the remains of plants which died
millions of years ago
COAL
5OIL and NATURAL GAS (Methane)
Made from the decayed remains of sea creatures
which died millions of years ago
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.
6All these fossil fuels are running out
and 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.
7To solve the problems of fossil fuels, we need to
develop
RENEWABLE FUELS such as BIOMASS (Wood etc).
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.
RENEWABLE forms of energy such as
Wind
8Hydroelectric schemes
These use the GPE of water on hills to generate
electricity as it flows downhill.
9Special versions of this can be used to produce
energy quickly on demand.
10Tidal Power.
11Wave Power 1.
12Wave Power 2
13Solar
14Solar 2
15Solar 3
16Geothermal
In certain parts of the world, heat from the
Earth can be used to produce steam to power
turbines and heat homes.