energy Flashcards
(18 cards)
law of conservation of energy
energy cannot be created nor destroyed only transferred from one store to another
energy stores (9)
kinnetic,chemical,thermal, gravitational potential,elastic potential, nuclear, electromagnetic, light, sound
sankey diagrams
diagrams to show efficiency, must be proportional!!
unit for energy
Joule
unit for force
Newton
Units for power
Watt
unit for mass
Kg
unit for height/length
metres
units for gravitational field strengh
N/kg
non renewable energy resources (4)
- oil
- nuclear
- coal
- gas
renewable energy resources (7)
- solar
- wind
- tidal
- wave
- hydroelectric
- biomass
- geothermal
advantages of renewable energy resources (2)
- sustainable
- don’t damage the environment
disadvantages of renewable energy resources (2)
- unreliable
- expensive initially
definition specific heat capacity
energy required to raise 1kg of a substance by 1C
definition specific latent heat
energy needed to change 1kg of a substance from one state to another without changing the temp
what is fusion?
solid to liquid
what is vaporization?
liquid to gas
if you need to calculate both specific latent heat and specific heat capacity….
factorize
eg
E = m(ΔT x c + L)
