Transcript Slide 1

SAVING ENERGY
By Marial Edwards
Low Carbon Council → Low Carbon Gwynedd
Learning Objectives
You will understand:
• What is energy and the uses of energy
• The difference between renewable and nonrenewable energy
• Why we need to save energy
• How we can save energy and be more energy
efficient
• How to measure energy savings
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What is energy?
What have you got at home or at school that uses energy?
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NON-RENEWABLE ENERGY
Fossil fuels are sources of non-renewable energy.
Most of the electricity in the UK is produced by
burning fossil fuels in large power stations.
They take millions of years to create and will soon run
out. Can you name the fossil fuels?
Coal
Gas
Oil
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RENEWABLE ENERGY
Renewable energy are sources which can be reproduced
over and over again. Renewable energy sources are
greener and better for our planet than Non-renewable
energy sources. Can you think of any?
SOLAR ENERGY
BIOMASS
WIND POWER
GEOTHERMAL
HYDRO ELECTRIC
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NUCLEAR ENERGY
• Nuclear power stations
creates about 18% of the
UK’s electricity from a small
amount of element called
Uranium
• There are no CO2 emissions
from nuclear power stations
• Some of the waste created
contains radiation which
must be kept safe for
thousands of years.
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Our planet needs YOU!
Why is it important to save
energy?
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The reasons to SAVE energy
1. To SAVE the environment
2. To Save our planet’s Non-renewable energy
sources
3. To SAVE money
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1.To SAVE the environment
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Did you know?
Everyday, when we travel in cars
and use electricity and heating in
our homes, we release a gas
called carbon dioxide (CO2).
When CO2 is released, it pollutes
the atmosphere.
CO2 is a major contributor of the
green house effect and speeds up
the changes in our climate .
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What is climate change?
CO2 traps heat in the atmosphere, similar
to a warm blanket. We need this
blanket to stop the Earth from
freezing.
However, too much CO2 in the
atmosphere makes the planet too hot
and creates what is known as the
Greenhouse Effect.
The long term result is Climate Change
(or Global Warming) – changes in
world temperatures and weather
patterns over a long period of time.
Who would like to come to
the front to demonstrate
this?
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Negative Effects: Climate Change
Ice melting and sea level rising.
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Negative Effects: Climate Change
More floods due to heavy rainfall and strong
winds in countries like Wales.
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Negative Effects: Climate Change
More drought already seen in several
countries on the Equator.
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Negative Effects: Climate Change
Diseases, such as malaria, that appear in hot
climates are spreading as mosquitoes move
to colder climates.
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Negative Effects: Climate Change
Plants and animals are becoming extinct
(up to 1/3 could disappear by 2050)
Oceans getting warmer and
turning too acidic.
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2.To SAVE non-renewable energy sources
• Fossil Fuels are running out
– 40 years of oil left
– 65 years of gas left
– 200 years of coal left
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3.To SAVE money
• Save energy = Save money!
• Together we can save
millions of £££ on our
heating and electricity bills
by not wasting energy.
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Is your school contributing to climate change?
• Ysgol Ein Harglwyddes
produced 44 tonnes of
CO2 in 2009
• This is enough CO2 to
fill 264 double-deckers
OR
• 44 hot air balloons
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Switch them off!
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Hot and bothered!
REMEMBER
18°C
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Close them!
Close doors and windows to prevent the heat from escaping!
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Don’t waste it!
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Have you saved energy?
• Every month, note your
school’s electricity and
gas meter readings to
find out if your school
is using less energy.
• Send your readings to
the suppliers (British
Gas / Corona Energy)
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www.sbarciafflic.org
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CLIMATE CHALLENGE
Choose a Climate
Crime Card.
Can you guess the
climate crime?
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