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P1: Quiz 10 – Answers
P1: Quiz 10 – Answers
1)
a) Renewable energy sources will never run out/ we will always have access to them/ we are using them at a slower rate than they are being replaced or produced
b) Non-renewable energy sources are finite (a limited amount), which means that they will eventually run out
2) Any 3 from solar, wind, waves, tidal, geothermal, hydroelectric and biofuels
3)
a) Oil, coal and natural gas
b) Any 2 from transportation, heating in homes, fuel for power stations to generate electricity, coal for fireplaces, coal for steam trains etc.
c) The fossil fuels are burnt, which produces heat that turns water into steam. The steam then turns turbines that are connected to generators, which generates electricity
d) Any 2 from:
i) Enhanced greenhouse effect or climate change
ii) Acid rain and breathing/ respiratory problems if breathed in
iii) Any from:
4)
a) Uranium and plutonium
b) They do not produce greenhouse gases/ do not contribute to climate change or the enhanced greenhouse effect. Also, they do not produce sulfur dioxide
c) The nuclear fuel in a nuclear power station undergoes controlled chain reactions, which produces heat. The heat turns water into steam, and the steam turns turbines that are connected to generators, which generates electricity
d) Any two from:
a) Renewable energy sources will never run out/ we will always have access to them/ we are using them at a slower rate than they are being replaced or produced
b) Non-renewable energy sources are finite (a limited amount), which means that they will eventually run out
2) Any 3 from solar, wind, waves, tidal, geothermal, hydroelectric and biofuels
3)
a) Oil, coal and natural gas
b) Any 2 from transportation, heating in homes, fuel for power stations to generate electricity, coal for fireplaces, coal for steam trains etc.
c) The fossil fuels are burnt, which produces heat that turns water into steam. The steam then turns turbines that are connected to generators, which generates electricity
d) Any 2 from:
- cheap
- currently they are easily accessible
- they can respond well to changes in electricity demand as they can be turned on and quickly start generating electricity
- they can generate electricity whenever they want
i) Enhanced greenhouse effect or climate change
ii) Acid rain and breathing/ respiratory problems if breathed in
iii) Any from:
- fossil fuels are finite/ non-renewable, so they will run out one day
- obtaining the fossil fuels can have a huge impact on the environment (e.g. open-cast mining for coal)
4)
a) Uranium and plutonium
b) They do not produce greenhouse gases/ do not contribute to climate change or the enhanced greenhouse effect. Also, they do not produce sulfur dioxide
c) The nuclear fuel in a nuclear power station undergoes controlled chain reactions, which produces heat. The heat turns water into steam, and the steam turns turbines that are connected to generators, which generates electricity
d) Any two from:
- they are a clean fuel/ don’t produce greenhouse gases or sulfur dioxide
- they store vast quantities of energy
- they can generate electricity whenever they want
- there may be a nuclear disaster where radioactive material is emitted into the environment
- they take the longest time out of all the non-renewables to turn on and start generating electricity
- the fuel is non-renewable, so it will eventually run out
- nuclear power stations are extremely expensive to build and decommission (take down after their life is up)
Questions
1)
a) Give a definition of a renewable energy source.
b) Give a definition of a non-renewable energy source.
2) Give 3 examples of renewable energy sources.
3) What are the four non-renewable fuels?
3)
a) What are the three fossil fuels?
b) Give two energy uses of fossil fuels.
c) Explain how fossil fuels are used to generate electricity in a power station. You do not need to go into huge detail.
d) Give 2 advantages of using fossil fuels to generate electricity.
e)
i) The burning of fossil fuels releases carbon dioxide. What impact does carbon dioxide have on the environment?
ii) The burning of fossil fuels (especially coal and oil) releases sulfur dioxide. What are the two problems associated with sulfur dioxide?
iii) What is another disadvantage of using fossils fuels to generate electricity? Do not give any of the disadvantages that we have looked at in part i and part ii.
4)
a) What are the two nuclear fuels?
b) Why are nuclear fuels sometimes described as clean fuels?
c) Describe how nuclear fuels generate electricity in a nuclear power station. You do not need to go into huge detail.
d) Give 2 advantages of using nuclear fuels to generate electricity. You can use the answer to part b.
e) Give 3 disadvantages of using nuclear fuels to generate electricity.
1)
a) Give a definition of a renewable energy source.
b) Give a definition of a non-renewable energy source.
2) Give 3 examples of renewable energy sources.
3) What are the four non-renewable fuels?
3)
a) What are the three fossil fuels?
b) Give two energy uses of fossil fuels.
c) Explain how fossil fuels are used to generate electricity in a power station. You do not need to go into huge detail.
d) Give 2 advantages of using fossil fuels to generate electricity.
e)
i) The burning of fossil fuels releases carbon dioxide. What impact does carbon dioxide have on the environment?
ii) The burning of fossil fuels (especially coal and oil) releases sulfur dioxide. What are the two problems associated with sulfur dioxide?
iii) What is another disadvantage of using fossils fuels to generate electricity? Do not give any of the disadvantages that we have looked at in part i and part ii.
4)
a) What are the two nuclear fuels?
b) Why are nuclear fuels sometimes described as clean fuels?
c) Describe how nuclear fuels generate electricity in a nuclear power station. You do not need to go into huge detail.
d) Give 2 advantages of using nuclear fuels to generate electricity. You can use the answer to part b.
e) Give 3 disadvantages of using nuclear fuels to generate electricity.