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GCSE - Geography (Dave) > Energy > Flashcards

Energy Flashcards

1
Q

What are renewable energy sources?

A

Power sources that quickly replenish themselves and used again

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2
Q

What are non-renewable energy sources?

A

Power sources that cannot be replaced after it is used

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3
Q

What percentage of global energy is fossil fuels?

A

81%

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4
Q

What percentage of global energy is renewable energy?

A

13.2%

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5
Q

What percentage of global energy is nuclear power?

A

5.8%

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6
Q

What is the main energy source in Nigeria?

A

Biomass - cheap

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7
Q

What is biomass?

A

Generated from decaying plant or animal waste.

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8
Q

What gives more power nonrenewable or renewable?

A

Non-renewable

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9
Q

What is hydroelectric power (HEP)?

A

Using the power of falling water in rivers to drive generators

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10
Q

What are the advantages of HEP?

A

Clean energy

Dam can prevent flooding

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11
Q

What are the disadvantages of HEP?

A

Dams flood large areas of land

Limited suitable rivers

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12
Q

What are bio-fuels?

A

Using biological matter to create energy (burnt)

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13
Q

What are the advantages of bio-fuels?

A

Renewable as people grow crops

Cheap

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14
Q

What are the disadvantages of bio-fuels?

A

Creates greenhouse gas
Deforestation for crops
Increase in food prices

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15
Q

What is geothermal energy?

A

Uses thermal energy from the earth to heat water (drives turbines)

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16
Q

What are the advantages of geothermal energy?

A

Clean & renewable

Heat water & electricity

17
Q

What are the disadvantages of geothermal energy?

A

Not every country can use it

Start-up cost is expensive

18
Q

What is solar power?

A

Using the power of the sun to heat water or generate electricity

19
Q

What are the advantages of solar power?

A

Clean energy
Infinite resource
Used locally

20
Q

What are the disadvantages of solar power?

A

Expensive
Can’t be used at night
Hard to store surplus

21
Q

What is wind power?

A

Using the wind power to drive a turbine

22
Q

What are the advantages of wind power?

A

Placed at sea

Infinite resource

23
Q

What are the disadvantages of wind power?

A

Visual pollution
Noise pollution
Expensive to install

24
Q

What is tidal power?

A

Using the incoming/outgoing motion of the tide

25
Q

What are the advantages of tidal power?

A

Clean energy

Ideal for islands

26
Q

What are the disadvantages of tidal power?

A

Block shipping routes

Interfere with animals

27
Q

What is wave power?

A

Using the motion of the waves to generate electricity

28
Q

What are the advantages of wave power?

A

Ideal for islands

Infinite resource

29
Q

What are the disadvantages of wave power?

A

Strength of waves can vary

Damaged by tropical storm

GCSE - Geography (Dave) (16 decks)

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