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Terms in this set (39)
Advantage of Tidal Energy?
Disadvantage of tidal energy?
Expensive to build dam
Advantage of Geothermal energy?
Disadvantage of geothermal energy?
Expensive to drill underground
Advantage of solar energy?
Disadvantage of sold energy?
Only works in daylight
Advantage of biomass energy?
Can be used in poorer countries as it doesn't need any special equipment
Disadvantage of biomass energy?
Large areas need to grow trees
Advantage of winds energy?
No pollution as nothing is burned
Disadvantage of Of wind energy?
Advantage of wind energy?
Disadvantage of wave energy?
Advantage of hydroelectric energy?
Disadvantage of hydroelectric energy?
What happens when step-up generators are used?
Increases voltage to make it higher
Why are step-down generators used?
Makes it safer for homes
Why is hydro electric electricity transferred through national grid at a higher voltage?
More efficient and less energy can be lost
Why are overhead cables usually made of aluminium?
Doesn't rust less expensive
Suggest 2 reason why underground cables are more difficult to repair than overhead ones?
Harder to find fault
Would have to dig up cables before you can repair them
What is the LOWEST amount of energy called?
What is the slowest start up time for energy produced?
What is the fastest start up time for energy produced?
Why do we use coal?
What is the disadvantage of using coal?
Produces fossil fuels
Give a disadvantage of storing Carbon (CCS)
Storing CO2 underground is another form of pollution
Give an advantage of storing Carbon (CCS)
We have enough space for storing huge amounts of CO2
What is the crest/Peak?
Top of wave
What is the trough?
Bottom of wave
What is the wavelength?
Distance from same point on wave to next
What is the amplitude?
Height of a wave from from resting position
What is the resting point?
Where wave is displaced from
How do transverse waves travel?
The vibrations (oscillations) are perpendicular at 90 degrees in direction of energy transfer
How do longitudinal waves travel?
Vibrations (oscillations) travel parallel to direction of energy transfer
What waves are found in longitudinal waves ONLY?
What happens when waves are bounced off something?
They are reflected
What is sound reflection called?
What is light reflection called?
How does sound travel?
In longitudinal waves
What speed do EM travel at?