consuming energy resources - paper 3 Flashcards

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1
Q

biofuels

A

Energy and fuel made from living material such as crops and vegetation.

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2
Q

climate change

A

The changing characteristics of the climate and seasons in regions across the
world.

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3
Q

decommission

A

The process of closing and safely disposing waste from a power station. This can
cost millions of pounds and take over a year to complete.

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4
Q

deep water oil

A

Oil found deeper underground, which is more difficult and riskier to extract.

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5
Q

deforestation

A

The removal of trees and woodland.

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6
Q

energy deficit

A

A country that generates less energy than its population needs (the supply is less
than the demand).

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7
Q

energy mix

A

The composition of a country’s energy sources.

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8
Q

energy security

A

When a country has ownership and control of their energy source, production
and transportation.

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9
Q

energy surplus

A

A country that generates more energy than its population needs (the supply is
greater than the demand).

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10
Q

fossil fuels

A

Non-renewable sources of fuel (gas, oil and goal) which take hundreds of thousands of years to form from dead vegetation and animals.

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11
Q

fracking

A

The process of releasing trapped natural gas from shale rocks. Fracking involves
pushing high-pressure liquids underground to cause the shale rocks to crack.

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12
Q

geothermal energy

A

Water is pumped deep underground to be heated by magma plumes or
radioactive rocks. The hot water creates steam, which turns turbines to generate electricity.

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13
Q

greenhouse gases

A

Gases (such as carbon dioxide and methane) which absorb and emit
radiation.

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14
Q

hydroelectric power

A

A form of energy which uses moving water to turn turbines and generate
electricity. We usually associate this type of energy with dams.

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15
Q

importing

A

Buying resources from another country, for example food or goods.

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16
Q

non renewable energy

A

A source of energy that will run out or will take thousands of years to replace such as fossil fuels.

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17
Q

nuclear fusion

A

The process of joining atomic nuclei together to produce energy.

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18
Q

oil spills

A

Accidents where oil leaks from pipes, oil rigs or even freight ships.

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19
Q

open-cast mining

A

Mining that involves removing the top layer of soil to extract minerals or fuel. All
wildlife and vegetation living on the surface is destroyed.

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20
Q

recyclable energy

A

Energy produced from sources that can be renewed; even though there is a
limited amount of fuel, more can be grown or made to replace.

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21
Q

renewable

A

Primary energy that can be re-used to produce electricity or has a short lifetime,
therefore any used can be replaced quickly e.g. Hydroelectric, biomass, solar.

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22
Q

secondary energy

A

The product of primary energy, mostly electricity.

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23
Q

solar energy

A

Where solar panels absorb sunlight and convert it into energy.

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24
Q

sustainability

A

Trying to manage resources in a way which meets the demands for the present
while thinking about the impacts this will have in the future.

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25
Q

tar sands

A

Sands which contain bitumen (oil). This can be extracted in a process which uses a lot
of water and energy.

26
Q

tidal energy

A

Energy which is powered by the changes of the tide. Turbines are built on the
seabed which are turned by the water when the sea goes out or comes in as the tides change.

27
Q

wave energy

A

Energy created by waves. Small turbines are located in buoys which float on the
surface of the sea. The waves pass through the turbines and create electricity.

28
Q

wind energy

A

Energy created by wind. Wind goes through wind turbines which generate electricity
as they turn.

29
Q

positives of fossil fuels

A

cheap to mine, fulfil high demand

30
Q

negatives of fossil fuels

A

polluting, non renewable

31
Q

positives of nuclear energy

A

very reliable output of energy

32
Q

negatives of nuclear energy

A

risk of radiation poisoning, waste must be sealed and left underground, expensive to decommission

33
Q

positives of solar power

A

costs are decreasing rapidly, large potential especially in deserts.

34
Q

negatives of solar power

A

not very efficient, effectiveness depends on climate and time of year

35
Q

positives of wind power

A

low running costs, can be used year round, many suitable sites

36
Q

negatives of wind power

A

bird life can be effected, weather dependent

37
Q

positives of wave power

A

produce most electricity in winter, lots of projects all over the world

38
Q

negatives of wave power

A

very expensive, needs to survive storms, isn’t perfect

39
Q

positives of tidal power

A

significant potential, reliable

40
Q

negatives of tidal power

A

very expensive, few schemes, impact on marine life

41
Q

positives of HEP (hydroelectric power)

A

improve clean water and energy supplies

42
Q

negatives of HEP (hydroelectric power)

A

expensive, disrupts fish migration

43
Q

positives of biomass/biofuel

A

cheap, easy to find, biofuels are renewable alternatives to oil

44
Q

negatives of biomass/biofuels

A

vegetation must be found sustainably land shouldn’t be cleared for it

45
Q

positives of geothermal

A

low maintainance

46
Q

negatives of geothermal

A

high cost to install, risk of earthquake

47
Q

environmental impacts of energy

A

visually polluting - unattractive - stick out

mining - damage landscape

oil spills - ruin wildlife - difficult to contain once out

48
Q

3 factors which effect energy supply

A

human
physical
economic

49
Q

how do humans effect energy supply

A

government - what can and can’t be used
conflict - can effect supply and extraction of energy sources
technology - levels of tech effect the way the country can supply

50
Q

how do physical factors effect energy supply

A

geology - fossil fuels need specific geology
climate - impact efficiency of renewable sources
tidal power - landlocked countries can’t use them

51
Q

how do economic factors effect energy supply

A

cost - could be too much for a country - unaffordable for families
dangerous - pay workers more
costly to transport

52
Q

what is an example of unconventional fossil fuels

A

shale gas

53
Q

how is shale gas extracted

A

extracted through fracking

water, chemicals and sand are pumped in the ground to break up the shale, horizontal drilling helps to remove gas reserves

54
Q

advantages of shale gas

A

half the emissions
found in the US - improve US economy

55
Q

disadvantages of shale gas

A

fracking faces large environmental oppositions

fracking triggers tiny tremors- earthquakes

expensive

56
Q

deep water oil advantages

A

easy to sell to customers

high paid jobs - high risk

57
Q

deep water oil disadvantages

A

more hazardous to extract
risky to extract oil from deep underground - frequent spills

58
Q

tar sands advantages

A

2.4 million barrels made everyday
economy benefits largely
employment advantages

59
Q

tar sands disadvantages

A

waste chemicals left in open ponds - chemicals are poisonous
open mining - destroys habitats

60
Q

fracking disadvantages

A

energy intensive - expensive
earthquakes - structural damage to buildings
pollute underground water sources - mix chemicals and salts - increase risk of shale rock cracks

61
Q

fracking process

A
  1. chemicals, sand, water are injected at high pressure
  2. pressure causes fissures in rock so gas flows back out
  3. methane and flow back water are recovered