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gcse physics > energy resources > Flashcards

energy resources Flashcards

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1
Q

what is non-reenable energy?

A

resources that will run out one day

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2
Q

what are the three main fossil fuels?

A

coal, oil and (natural) gas

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3
Q

how do they effect the environment?

A

they all do damage to the environment

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4
Q

what are renewable resources?

A

resources that will never run out

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5
Q

what are examples of renewable energy sources?

A

solar, wind, water waves, hydro-electricity, bio-fuel, tides and geothermal

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6
Q

how do they effect the environment?

A

most of them do damage but less so then non-renewables

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7
Q

what is the problem with them?

A

they don’t provide much energy and some of them are unreliable because they depend on weather

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8
Q

how can non-renewable energy resources be used for transport?

A

petrol and diesel, powered vehicles use fuel created from oil, coal is used some old-fashioned steam trains

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9
Q

how can renewable energy sources be used for transport?

A

vehicles that run on pure bio-fuels or a mix of bio-fuel and petrol or diesel

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10
Q

how can non-renewable energy resources be used for heating?

A

natural gas is a widely used fuel for heating homes, coal is burnt in fireplaces, electric heaters use electricity generated from non-renewables

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11
Q

how can renewable energy resources be used for heating?

A

geothermal heat pumps to heat buildings, solar water heaters heat the water which is taken into radiators and burning bio-fuel or using electricity for renewables

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12
Q

what is wind power?

A

lots of wind turbines in exposed places that each have a generator in them to produce electricity

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13
Q

what are the advantages of wind power?

A

no pollution except the manufacturing, no permanent damage, no fuel costs and minimal running costs

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14
Q

what are the disadvantages of wind power?

A

spoil the view, very noisy, when the wind stops or becomes too strong you can’t increase supply and initial costs are quite high

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15
Q

what are solar cells?

A

generate electric currents directly from sunlight

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16
Q

what are the advantages of solar power?

A

no pollution except from manufacturing and after initial costs energy is free and running costs are very small

17
Q

what are the disadvantages of solar power?

A

only work in sunny countries and in the day, generate electricity on a small scale only and can’t increase power output when there is extra demand

18
Q

what is geothermal power?

A

energy in underground thermal energy stores

19
Q

what are the advantages of geothermal power?

A

free energy thats reliable and does little damage to the environment, used to generate electricity or heat buildings

20
Q

what are the disadvantages of geothermal power?

A

aren’t many suitable locations and the cost of building a power plant is high compared to the amount of energy produced

21
Q

what is hydro-electric power?

A

flooding of a valley by building a big da, water is allowed out through turbines

22
Q

what are the advantages of hydro-electric power?

A

no pollution, can provide an immediate response to an increased demand for electricity

23
Q

what are the disadvantages of hydro-electric power?

A

flooding destroys habitats, if there’s drought, initial costs are high and can generate only on a small scale

24
Q

what is wave power?

A

lots of little wave-powered turbines

25
Q

what are the advantages of wave power?

A

no pollution and there are no fuel costs and minimal running costs

26
Q

what are the disadvantages of wave power?

A

disturbs seabed and habitats of marine animals, relies on big waves, initial costs are high and cannot provide on a large scale

27
Q

what are tidal barrages?

A

big dams built across river estuaries, with turbines in them

28
Q

what are the advantages of tidal barrages?

A

no pollution, pretty reliable, no fuel costs and minimal running costs and can produce a significant amount of energy

29
Q

what are the disadvantages of tidal barrages?

A

prevent free access to boats, spoiling view and altering the habitat, height of tides depend so will get less energy on a low tide

gcse physics (10 decks)

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