Energy Flashcards

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1
Q

Non renewable

A

Are finite eg coal,oil,gas

Will not be replenished

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2
Q

Renewable energy

A

Energy resource that are sustainable eg geothermal, wind, HEP, wave and tidal power

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3
Q

Reasons for the increase in demand for resource

A

Population growth
—-> more people need to use these resource in order to survive
—> use of heating for the population

Economic development
—-> fuel for industry and manufacturing growth
—> new countries rely on energy to support infrastructures

Increasing wealth
—> more are able to afford better lifestyles, which use energy resources
—> bigger houses
—> holidays and private forms of transport use a large carbon footprint

Technological advances
—> use of phones and the internet
—> usage of appliances that are electrical

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4
Q

Advantages of higher energy comsumption

A

Electricity makes household tasks easier

Modern technology system are based on oil use

Industry requires high energy to make it work

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5
Q

Disadvantages of higher energy consumption

A

There are concern we are using it too quickly ,and that we will soon run out of supplies

Create air pollution

Interdependence of supply may lead to conflict

Safety concern of extraction

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6
Q

Coal advantages (non renewable)

A

Available in large amounts

Easy to store

Produce efficient energy

Cheap

Electricity produced from oil is reliable

The technology to burn coal to generate electricity already exist

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7
Q

Coal disadvantage (non renewable)

A

Coal is finite so will eventually run out

Releases greenhouse gases

Becoming harder to extract

Oil leakage causes environmental issues

Mining causes damage

Oil production unstable

Less supply more demand increases price

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8
Q

Oil advantages (non renewable)

A

Technology is improving to extract deeper reserves as well oil in tar sand

Technology to burn oil to generate electricity already exist

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9
Q

Oil disadvantages (non renewable)

A

Oil is finite so will eventually run out

Oil can cause widespread pollution when split

Release greenhouse gases

Lots of oil is located in politically unstable countries

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10
Q

Gas advantages

A

Burning gas releases less greenhouse gases then coal and oil

Possible to compress gas and transport it more easily

Easy to store

Easy to preserve

Cleanest fossil fuel

Transported through pipelines and tankers and I and on sea

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11
Q

Gas disadvantage

A

Gas is finite

Gas is vulnerable to leaks and explosion

Toxic and flammable

Leakage of gas causes explosion and fire

Gases can cause health problems

Damage to the environment

release green house gases

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12
Q

Solar advantages

A

Clean form of energy

Infinite resource

It can be used to heat water and generate electricity

No fuel cost

No pollution

Safe

Effective for low power usage

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13
Q

Solar disadvantages

A

Sun doesn’t shine all the time

Hard to store surplus energy

Supply doesn’t always equal demand

Expensive to make solar panels

Large areas are required

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14
Q

Wind advantages

A

Clean form of energy

Infinite resources

Used in local scale

Not polluting

Space efficient

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15
Q

Wind disadvantage

A

Visual pollution

Noise pollution

Wind is unreliable

Expensive to install especially onshore

It is hard to store surplus energy

They have to be turned off on very strong wind

Turbine are a threat to birds

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16
Q

Tidal advantages

A

Clean form of energy

Infinite source,tides happen twice a day

Ideal for island countries

17
Q

Tidal disadvantages

A

It can block important shipping routes

May interfere with some animals eg sea otters and seals

Limited number of sites

Useless for landlocked countries

High start up cost the technology still being developed

May be damaged by tropical storms

18
Q

Waves advantages

A

It clean form of energy

Infinite resource

Ideal for island countries

19
Q

Waves disadvantage

A

Again it can block shipping route and interfere with animals

Again not suitable for landlocked countries

The strength of waves can varies

20
Q

HEP advantages (renewable)

A

Renewable

No pollution

No fuel cost

Electricity produced at a constant rate

Power station can respond quickly to changing demands

21
Q

HEP disadvantages (Renewable)

A

Dam is expensive to build

Large reservoir taking a lot of space
—>affecting local livelihood

Disrupt wild life

Expensive to maintain

Droughts can cause an effect on power station

22
Q

Nuclear advantages

A

Power efficient—> low fuel cost

Reliable

Easy to transport

Doesn’t produce greenhouse gases

-large amount of electricity can be generated

Low running cost

No atmospheric pollution

Doesn’t enhance global warming

Use small amounts of uranium

23
Q

Nuclear power disadvantage

A

CO2 is released when transporting fuels

Radiation/ risk of cancer

Very expensive to build power station

Difficult to dispose

Can harm humans

24
Q

Nuclear

A

Heat up into steam

Steam drives turbines

Turbines turn the generator

Generated electricity is transferred through transmission lines

Nuclear fission- uranium atoms split in nuclear reactors

25
Q

Explain how pollution may threaten the local natural environment

A

Build up toxins

Loss of habitat

Noise scare wildlife

Impact ecosystem

Global warming

Acid rain

Destruction of vegetation

26
Q

Benefit of renewable

A

Won’t run out

Cheaper running cost

Doesn’t pollute

Doesn’t produce acid rain

Less likely to enhance global warming

No waste product

27
Q

Suggest reason to explain why New Zealand doesn’t use nuclear power

A

Hard to dispose

Worries over radiation

Expensive buildings

Public pressure

Problem disposing waste

Political issues