P1

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  • Created by: Laiba_x
  • Created on: 24-05-14 18:26
How does energy flow?
Energy, in the form of heat, flows from a warmer to a colder body. When energy flows away from a warm object, the temperature of that object decreases.
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What is a thermogram?
It uses colour to show temperature. Hottest areas = white/yellow. Coldest areas = black/blue/purple
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Whta is meant by temperature?
This is a measure of hotness.
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What happens when the temperature of a body increases?
The avarage kinetic energy increases.
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What is meant by heat?
This is a measure of internal energy.
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What is meant by Specific Heat Capacity?
The energy needed to raise the temperature of 1 kg by 1 'c. Units = J/kg 'c
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What happens when an object is heated and its temperature rises?
Energy is transferred.
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What is the equation of Specific Heat Capacity?
Energy transferred = mass x specific heat capacity x temperature rise
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What is meant by specific latent heat?
The energy needed to melt or boil 1 kg of that material. Units = J/kg
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What happens to an object when it's heated and it changes state?
Energy is trasferred but the temperature remains constant.
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What is the equation of specific Latent Heat?
Energy transferred = mass x specific latent heat
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What happens when a substance changes state?
Energy is needed to break the bonds that hold the molecules together - this is why there is no chhange in temperature.
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Other cards in this set

Card 2

Front

What is a thermogram?

Back

It uses colour to show temperature. Hottest areas = white/yellow. Coldest areas = black/blue/purple

Card 3

Front

Whta is meant by temperature?

Back

Preview of the front of card 3

Card 4

Front

What happens when the temperature of a body increases?

Back

Preview of the front of card 4

Card 5

Front

What is meant by heat?

Back

Preview of the front of card 5
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