Energy Flashcards
What is specific heat capacity?
The amount of energy needed to heat a 1kg by 1•c
How does more insulation in a material change it
Gives it a slower rate of heat transfer
List the renewable sources of energy
Wind,HEP,waves/tidal,geothermal,biomass
What’s the advantages of all renewable sources of power
Don’t contribute to global warming and will never run out
What is the general disadvantage of renewable energy
All methods are more expensive then fossil fuels
What’s the disadvantage of wind power
It’s not always windy
What’s the disadvantage of HEP and Wave power
Both can damage the environment
What’s the disadvantage of geothermal energy
There’s only a few places on earth where it can happen
How should answers for efficacy be wrote
In a percentage or decimal
What are the main problems with wind turbines
Very noisy and can spoil views
How do wind turbines create energy
The rotating blades turn the generator and produce electricity
How does geothermal power produce electricity
The source of the power is the slow decay of various radioactive energy deep in the earth
What are the pros and cons of biofuel
Pros:supposedly carbon neutral and fairly reliable
Cons : costs are high ,some regions some areas of first have been cleared to make room for bio fuels,leading to species losing their natural habitat
Why energy does the world rely on at this moment in time
Fossil fuels
How have companies been affected by the greener aproach
Car companies have introduced electric cars and hybrid
