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GCSE Phys sep P3 H

P3 Energy resources

QuestionAnswer
1. What are energy resources used for? • Generating electricity • Heating • Transport
2. What do the words renewable and non-renewable mean? • Renewable – won’t run out • Non-renewable – will run out – FINITE sources
3. State the non-renewable energy resources • Fossil fuels • Nuclear
4. What are the three fossil fuels? Coal, oil and gas
5. State the renewable energy resources • Solar • Geothermal • Bio-fuels • Wind • Tidal • Hydroelectric • Wave
6. Which energy resources release carbon dioxide? • Fossil fuels • Bio-fuels (but they also take it in when plants used grow so are carbon neutral – they release what they absorbed
7. What is the order of greenhouse gas emissions for fossil fuels? 1. Coal (highest emitter) 2. Oil 3. Gas (lowest emitter)
8. Which energy resources are reliable? • Fossil fuels • Nuclear • Hydroelectric • Geothermal • Tidal (can be thought as reliable as it is PREDICTABLE although it can only generate electricity twice a day
9. State the advantages and disadvantages of fossil fuels Advantages • Reliable Disadvantages • Non-renewable • Release carbon dioxide • Coal and oil release sulphur dioxide which can cause acid rain • Release soot can cause GLOBAL DIMMING
10. State the advantages and disadvantages of nuclear Advantages • Reliable • Small amount of fuel releases massive amounts of energy • Doesn’t release carbon dioxide Disadvantages • Non-renewable • Waste is radioactive for thousands of years • Slow start-up time • Expensive to decommission
11. State the advantages and disadvantages of wind energy Advantages • Renewable • No carbon dioxide emissions • No fuel costs Disadvantages • Not reliable as dependant on weather conditions • Some people don’t like the look or the noise they make
12. State the advantages and disadvantages of solar energy Advantages • Renewable • No carbon dioxide emissions • No fuel costs Disadvantages • Not reliable as can’t make electricity at night • Solar cells are expensive
13. State the advantages and disadvantages of hydroelectric Advantages • Renewable • Reliable • No carbon dioxide emissions • No fuel costs • Short start-up time Disadvantages • Large scale schemes flood land which destroys habitats • Large scale schemes build a dam which is expensive
14. State the advantages and disadvantages of geothermal energy Advantages • Renewable • Reliable • No carbon dioxide emissions • No fuel costs Disadvantages • Can only be placed in volcanic areas (eg Iceland) • Building a geothermal power station is expensive
15. State the advantages and disadvantages of tidal energy Advantages • Renewable • No carbon dioxide emissions • No fuel costs • Predicable Disadvantages • Can only generate electricity twice a day when the tide comes in • Building a tidal barrage is expensive • The feeding grounds of wading bird
16. State the advantages and disadvantages of wave energy Advantages • Renewable • No carbon dioxide emissions # • No fuel costs Disadvantages • Not reliable as dependent on wind conditions • Disturb habitats of marine animals • Hazard to boats
17. State the advantages and disadvantages of biofuels Advantages • Renewable • Carbon neutral (plants take in the carbon dioxide when they grow) Disadvantages • Uses space and water that could be used for growing food crops
18. What is base load? The base load is the minimum level of demand on an electrical grid over a span of time, for example, one week.
19. What is the order of increasing start up times for power stations 1. Nuclear (longest) 2. Coal 3. Oil 4. Gas (shortest)
Created by: drcgregory
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