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Geography > Energy > Flashcards

Energy Flashcards

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1
Q

What percentage of Icelands energy sources are renewable?

A

85%

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2
Q

What percentage of Icelands energy sources are Geothermal?

A

65%

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3
Q

What percentage of Icelands energy sources are hydroelectric?

A

20%

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4
Q

What percentage of Iceland’s fuel in non-renewable and what is it used for?

A

15% imported oil to run transport

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5
Q

Why does Iceland have a good geothermal energy capacity?

A

It lies on a tectonic plate boundary (mid atlantic) and a hotspot, meaning volcanic activity is very common, making it easy to effectively draw upon geothermal resources

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6
Q

On which volcano is the Hellisheidi power station located?

A

Hengill

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7
Q

What is the 2nd largest geothermal power station in the world?

A

Hellisheidi

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8
Q

What are the main uses of Iceland’s geothermal energy?

A
  • Heating houses
  • Heating Swimming pools
  • Heating greenhouses
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9
Q

What percentage of the Iceland’s fruits and vegetables are produced in Iceland?

A

60%

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10
Q

Why does Iceland have a good capacity for Hydropower?

A

Because it has a lot of Glaciers, leading to fast flowing glacial rivers and waterfalls

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11
Q

Name the advantages of Geothermal energy in Iceland

A
  • Renewable
  • Relatively inexpensive
  • Creates an energy surplus
  • It can be generated consistently throughout the 24 hour day
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12
Q

Name the disadvantages of Geothermal energy in Iceland

A
  • The power station ar ugly
  • The locations are restricted
  • They are expensive to establish
  • Release of bad smelling hydrogen sulfide and toxic geothermal fluids
  • Can trigger earthquakes if done badly, or damage land stability
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13
Q

What is the name of the company who created the 2 wind turbines installed in Iceland

A

Icewind

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13
Q

What percentage of households in Iceland are heated by geothermal energy?

A

90%

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14
Q

Is Nuclear energy renewable?

A

No

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15
Q

Which country produces the most Nuclear energy, and what percentage is that of the total energy production in the world?

A

USA produces 31% of the world’s nuclear energy

16
Q

How is Nuclear energy produced?

A

The splitting of radioactive atoms e.g. uranium, which releases energy to boil steam, which spins turbines and produces energy.

This is called fission

17
Q

What are the Pros and Cons of Nuclear energy?

A

Pros:
- Energy effective
- Space effective
- Do not produce greenhouse emissions
- Uranium is relatively cheap

Cons:
- If not well managed, can have serious impacts - Chernobyl & Fukushima cause fear to people
- Creates nuclear waste
- High initial cost to set up
- Non-Renewable
- Ugly

18
Q

Is Geothermal energy renewable?

A

Yes

19
Q

Which country produces the most Geothermal energy, and what percentage is that of the total energy production in the world?

A

Iceland, 8.3% of worlds energy, and 65% of all energy in iceland

20
Q

How is Geothermal energy produced?

A

Water in underground reservoirs is heated by plumes of magma in the mantle, and pumped out of the earth’s crust to turn to steam and spin generators.

21
Q

What are the Pros and Cons of Geothermal energy?

A

Pros:
- Renewable
- Climate friendly
- Can produce 100 times more enrgy f you manage to dig 2x deeper than normal, but this is still experimental technology
- No fuel required, so it is quite cheap when it gets going

Cons:
- Limited locations - Hotspots and tectonic plate boundaries
- Ugly, does not merge with landscape
- High initial setup cost
- Can cause crust to become unstable

22
Q

Is Wave & Tidal energy energy renewable?

A

Yes

23
Q

Which country produces the most Wave & Tidal energy

A

South Korea uses the most Wave and Tidal energy

24
Q

How is Wave & Tidal energy produced?

A

Produced by turbines that are spun by the rise and fall of ocean tides and currents

24
Q

How is Wave & Tidal energy produced?

A

Produced by turbines that are spun by the rise and fall of ocean tides and currents

25
Q

What are the Pros and Cons of Wave & Tidal energy?

A

Pros:
- Easily predictable
- Renewable
- No greenhouse gases emmited
- Reliable

Cons:
- Doesn’t produce enough energy
- Initial construction costs are expensive
- Only produces energy during itdes
- Limited locations

26
Q

Is Fuelwood energy renewable?

A

No

27
Q

Which country produces the most Fuelwood energy

A

LEDCs in general use this source the most, and it can supply up to 70% of their energy. Congo is a good example, with 40% of the population reliant on fuelwood to heat and cook.

28
Q

How is Fuelwood energy produced?

A

The wood is simply burnt and energy is release for daly needs e.g. heating or cooking

29
Q

What are the Pros and Cons of Fuelwood energy?

A

Pros:
- No need for high energy equipment
- Free and accesible
- Could be renewable if wood was consumed sustainably

Cons:
- Smoke can cause health problems
- Non-renewable
- Emits greenhouse gases
- Deforestation

30
Q

How long will Oil, Gas and Coal last?

A

50, 70 and 250 years

Geography (13 decks)

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