transferring energy Flashcards

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1
Q

what are the 8 main types of energy

A

electrostatic , elastic potential energy , gpe , nucleur , magnetic , thermal , kinetic , chemical

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2
Q

what are machines

A

machines transfer enregy from 1 form to another

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3
Q

what are the 4 ways energy can be transferred to anoother form.

A

mechanical , radiation , electrical , heating

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4
Q

what is conservation of enrgy

A

it states that energy cannot be created or destroyed

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5
Q

what is energy density

A

is a measure of how much ebergy a fuel provides per unit of its mass

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6
Q

what does renewable mean

A

capable of being renewed

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7
Q

what does non renewable mean

A

it means they take millions of years to form but are used at a quick rate

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8
Q

what are the 7 renewable energy sources

A

solar , wind , biomass , tidal , wave , hydroelectric and geothermal

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9
Q

what are the 4 non renewable energy sources

A

nuclear , coal , natural gas and oil

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10
Q

what is work done

A

the process of transferring energy

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11
Q

what is the equation to work out work done

A

work done = force times distance

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12
Q

what is the equation to work out force

A

force = work done divided by distance

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13
Q

what is the equation to work out distance

A

distance = work done divided by force

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14
Q

what is power

A

the rate at which work is done

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15
Q

what is the equation to work out power

A

power = work done divided by time taken

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16
Q

what is work done measured in

A

joules

17
Q

what is distnace measured in

A

meters

18
Q

what is force measured in

A

newtons

19
Q

what is the equation to work out time taken

A

time = work done divided by power

20
Q

what is the equation to work out work done

A

work done = power times time

21
Q

what is power measured in

A

watts

22
Q

what is time measured in

A

seconds

23
Q

what is efficency

A

measure of how much energy put into a device is used usefully

24
Q

what is the equation to work out efficency

A

efficency = useful energy output divided by total energy input

25
Q

what is the equation to calculate power in an electrical appliance

A

power = current times voltage

26
Q

what is current measured in

A

ampere ( amps )

27
Q

what is voltage measured in

A

volts ( V )