Transferring energy phy Flashcards
(27 cards)
what are the 8 main types of energy
electrostatic , elastic potential energy , gpe , nucleur , magnetic , thermal , kinetic , chemical
what are machines
machines transfer enregy from 1 form to another
what are the 4 ways energy can be transferred to anoother form.
mechanical , radiation , electrical , heating
what is conservation of enrgy
it states that energy cannot be created or destroyed
what is energy density
is a measure of how much ebergy a fuel provides per unit of its mass
what does renewable mean
capable of being renewed
what does non renewable mean
it means they take millions of years to form but are used at a quick rate
what are the 7 renewable energy sources
solar , wind , biomass , tidal , wave , hydroelectric and geothermal
what are the 4 non renewable energy sources
nuclear , coal , natural gas and oil
what is work done
the process of transferring energy
what is the equation to work out work done
work done = force times distance
what is the equation to work out force
force = work done divided by distance
what is the equation to work out distance
distance = work done divided by force
what is power
the rate at which work is done
what is the equation to work out power
power = work done divided by time taken
what is work done measured in
joules
what is distnace measured in
meters
what is force measured in
newtons
what is the equation to work out time taken
time = work done divided by power
what is the equation to work out work done
work done = power times time
what is power measured in
watts
what is time measured in
seconds
what is efficency
measure of how much energy put into a device is used usefully
what is the equation to work out efficency
efficency = useful energy output divided by total energy input
