l1&2 resources
TRANSCRIPT
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Different Types Of ResourcesIn pairs, DEFINE the term ‘resource’, prize for the best effort.
‘a naturally occurring product (wood, coal, wind) that can be used in its own right made into something else’
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By the end of the lesson…
• ALL of you will be able to name one type of resource.
• MOST of you will be able to define the terms sustainable, renewable and non-renewable.
• SOME of you will be able to state the benefits (good points) and costs (bad points) of at least one type of energy source.
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Odd One Out and Why?
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Renewable
They will never run out
and can be used over and over
again.
Non-renewabl
eThese are
being used up and
cannot be replaced.
Sustainable
These are meeting the
needs of people now,
without preventing
future generations
from meeting theirs.
Classifying Resources
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CoalA fossil fuel that was formed
millions of years ago from the remains of dead trees. It is used
as a domestic fuel (heating in homes) and to generate
electricity in coal fired power stations. Burning it releases a lot
of carbon dioxide into the atmosphere.
WindThis can be used to turn wind
turbines that generate electricity. Wind energy is very
environmentally friendly and the UK has the potential to generate
almost all of it’s electricity through wind farms. However,
they can be limited by the frequency of the wind.
Natural GasNatural gas is used for electricity production, heating and cooking
in Europe. It was created approximately 350 million years ago when tiny marine organisms died and sank to the bottom of the sea. It’s a type of fossil fuel
and emits carbon dioxide when it is burned. Much of the UK’s North
Sea gas has now been used up.
UraniumThis mineral is used to generate huge amounts of heat needed to create nuclear energy, a valuable method of electricity generation.
Nuclear energy produces very little pollution, however it creates potentially dangerous radioactive
waste that can cause severe illness and damage to the
environment.
TidesThese regular changes in the
height of the sea can be used to turn underwater turbines to
generate electricity. They are very reliable, but as to date this type of
energy generation is still in the research and development phase.
WoodProduced by the growth of timber (trees). A very important resource
that has multiple uses such as: paper, fuel and construction.
ApplesA fruit that is grown commercially
as a food stuff throughout the world.
BiogasThis resource is created by the decomposition (break down) of
organic matter such as wood chips and animal dung. This
releases methane gas that can be used to provide electricity or
burnt as fuel source.
SolarThe primary source of all the
Earth’s energy, the Sun is vitally important to grow crops, rear
animals and maintain the Earth’s temperature. In recent years
scientists have developed the use of solar panels to generate
electricity and heat water. Solar energy production creates
virtually no pollution.
Vegetable OilProduced by the growth of plants such as palm nuts, vegetable oil is
important for cooking, heating and as an ingredient in cosmetics and food products. Many of the worlds tropical rainforests are
being chopped down to be replaced by palm plantations,
destroying the habitats of many endangered species and
contributing to climate change.
Wave Power40% of the worlds population lives at the coast. The energy
from waves could be used to turn turbines to generate electricity.
Still in its infancy this type of energy production is very rarely
used, despite being environmentally friendly.
Beef Produced from the rearing of
cows, beef is a vital food product used around the world. As people become richer they are tending to
eat more meat in their diets.Many parts of the biosphere have, or are being altered by
cattle ranching. Cows produce methane, a greenhouse gas which
contributes to climate change.
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The Current UK Energy Mix
1. Describe the current energy mix of the UK using figures from the table.
2. How has energy consumption changed from 1965 to 2005?
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Are There Enough Resources?
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Esther Boserup
• In 1965 Boserup wrote "necessity is the mother of invention". That means, if you need it, someone will invent it.
• So if more food was needed she wrote that people would invent ways of increasing food supply - crops that fight diseases or survive with less water are examples of this.
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Thomas Malthus
• In the 18th century Malthus wrote that the rate of population growth was faster than the rate that food supplies could grow. In time, there would not be enough resources for everyone. Some people would therefore starve and the population would reduce again.
• More people may be killed from wars over trying to get hold of resources - he called these a positive check. People might try to prevent this from happening by having smaller families. He called this a preventative check.