Physics unit 1

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What does the coservation of energy state?
Energy cannot be created or destroyed but it can be transferred into different types of energy
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What type of energy is stored in food?
Chemical energy
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Why is the efficiency of an application always less than 100%?
Some energy is wasted and sp all the input energy isn't transformed usefully
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What is meant by payback time?
Is the amount of time it takes for the intial cost to equal the money saved
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Give three methods for insulating a house
Loft insulation / draught proofing / thick curtains /cavity wall insulation /double glazing
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What is meant by specific heat capacity?
Is the amount of energy needed to raise the temperature of 11L of a substance by 1°c
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Card 2

Front

What type of energy is stored in food?

Back

Chemical energy

Card 3

Front

Why is the efficiency of an application always less than 100%?

Back

Preview of the front of card 3

Card 4

Front

What is meant by payback time?

Back

Preview of the front of card 4

Card 5

Front

Give three methods for insulating a house

Back

Preview of the front of card 5
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