Energy Flashcards
What percentage of Icelands energy sources are renewable?
85%
What percentage of Icelands energy sources are Geothermal?
65%
What percentage of Icelands energy sources are hydroelectric?
20%
What percentage of Iceland’s fuel in non-renewable and what is it used for?
15% imported oil to run transport
Why does Iceland have a good geothermal energy capacity?
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
On which volcano is the Hellisheidi power station located?
Hengill
What is the 2nd largest geothermal power station in the world?
Hellisheidi
What are the main uses of Iceland’s geothermal energy?
- Heating houses
- Heating Swimming pools
- Heating greenhouses
What percentage of the Iceland’s fruits and vegetables are produced in Iceland?
60%
Why does Iceland have a good capacity for Hydropower?
Because it has a lot of Glaciers, leading to fast flowing glacial rivers and waterfalls
Name the advantages of Geothermal energy in Iceland
- Renewable
- Relatively inexpensive
- Creates an energy surplus
- It can be generated consistently throughout the 24 hour day
Name the disadvantages of Geothermal energy in Iceland
- 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
What is the name of the company who created the 2 wind turbines installed in Iceland
Icewind
What percentage of households in Iceland are heated by geothermal energy?
90%
Is Nuclear energy renewable?
No
Which country produces the most Nuclear energy, and what percentage is that of the total energy production in the world?
USA produces 31% of the world’s nuclear energy
How is Nuclear energy produced?
The splitting of radioactive atoms e.g. uranium, which releases energy to boil steam, which spins turbines and produces energy.
This is called fission
What are the Pros and Cons of Nuclear energy?
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
Is Geothermal energy renewable?
Yes
Which country produces the most Geothermal energy, and what percentage is that of the total energy production in the world?
Iceland, 8.3% of worlds energy, and 65% of all energy in iceland
How is Geothermal energy produced?
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.
What are the Pros and Cons of Geothermal energy?
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
Is Wave & Tidal energy energy renewable?
Yes
Which country produces the most Wave & Tidal energy
South Korea uses the most Wave and Tidal energy
