p2 and p3- energy transfer by heating and energy resources Flashcards

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1
Q

what is the best conductor of energy?

A

metal

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2
Q

what are the best insulators?

A

non metal materials such as wool and fibre glass

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3
Q

energy transferred =

A

mass (kg) x specific heat capacity (j/kg) x temperature change

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4
Q

what can the rate of energy transfers from houses be reduced by?

A

loft insulation, cavity wall insulation, double glazed windows, aluminium behind radiators

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5
Q

what type of sources of energy are biofuels?

A

renewable

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6
Q

what do fossil fuels produce?

A

greenhouse gases

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7
Q

will renewable energy run out?

A

no

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8
Q

what are the disadvantages of nuclear power stations?

A

expensive and produce harmful emissions

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