P1a: Heating houses

When a body is heated, it gets hotter. A common misconception is that heat and temperature are the same thing. This item develops ideas to show that heat and temperature are different and that heat gain or loss does not always result in a temperature rise but can bring about a change of state. Because of a high specific heat capacity water needs lots of energy to increase its temperature. Because of this it also stores lots of energy and so is useful for transporting and transferring energy around homes. 

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What is temperature represented by?
Colour in a thermogram.
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What does the rate on cooling depend on in a warm body?
The temperature difference compared to the surroundings.
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What is heat a measurement of?
Energy on an absolute scale.
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What is heat measured in?
J - Joules.
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The energy needed to change the temperature of the body depends on which three factors?
Mass, temperature made and the material from which it is made.
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What is the equation for energy? (specific heat capacity)
Mass x specific heat capacity x temperature change.
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Why doesn't the temperature change during a change of state?
This is because the energy is used to break the bonds between the particles in the substance.
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Even though energy is still being transferred, there is no temperature change when materials are..
boiling/melting/freezing.
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What is the equation for energy? (specific latent heat)
mass x specific latent heat
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What is temperature?
A measurement of hotness on an arbitrary or chosen scale, and a measurement of average kinetic energy particles.
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How are the coldest parts represented on a thermogram?
black/dark blue/purple
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How are the hottest parts represented on a thermogram?
white/yellow/red
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Heat energy flows from a hot object to a cooler one. This causes...
Hot objects to cool down, cool objects to warm up.
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Other cards in this set

Card 2

Front

What does the rate on cooling depend on in a warm body?

Back

The temperature difference compared to the surroundings.

Card 3

Front

What is heat a measurement of?

Back

Preview of the front of card 3

Card 4

Front

What is heat measured in?

Back

Preview of the front of card 4

Card 5

Front

The energy needed to change the temperature of the body depends on which three factors?

Back

Preview of the front of card 5
View more cards

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