Energy And Density Revision
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17 Terms
1
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What is density?
The density of a material tells us how much mass there is in a certain volume.
2
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mass (kg) =
density (kg/m cubed) x volume (m cubed)
3
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What is an advantage and disadvantage of coal?
A - reliable
D - makes CO2, long start up time, acid rain.
D - makes CO2, long start up time, acid rain.
4
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What is an advantage and disadvantage of oil?
A - reliable
D - makes CO2, oil is needed for other things
D - makes CO2, oil is needed for other things
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What is an advantage and disadvantage of gas?
A - Reliable, quick start up time, less polluting than oil or coal
D - makes CO2
D - makes CO2
6
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What is an advantage and disadvantage of nuclear?
A - Reliable, produces a lot of energy per kg of fuel, no CO2
D - Very long start up time, produces radioactive waste, risk of accidents, power stations need to be decommissioned at the end of their lives
D - Very long start up time, produces radioactive waste, risk of accidents, power stations need to be decommissioned at the end of their lives
7
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does solar and wind require fuel?
no
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Is solar and wind power reliable?
no because they are weather dependent.
9
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What is an advantage and disadvantage of dams and reservoirs?
A - doesn't need fuel
D - floods habitats
D - floods habitats
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What is an advantage and disadvantage of tidal?
A - doesn't need fuel
D - floods habitats
D - floods habitats
11
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What is an advantage and disadvantage of biomass?
A - carbon neutral
D - takes up space to grow it.
D - takes up space to grow it.
12
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What is an advantage and disadvantage of geothermal?
A - no fuel needed
D - only certain places are suitable
D - only certain places are suitable
13
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What is an advantage and disadvantage of wave power?
A - reliable
D - doesn’t work well at large scale
D - doesn’t work well at large scale
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What is the only energy resource that does require fuel?
Biomass
15
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what happens when on energy store decreases?
Another increases
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what are some examples of chemical potential?
batteries, food and fuels
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what is an example of elastic potential energy?
stretching
Note 
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