# physics

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why does ice float?
it expands. its volume increases, so the density of the ice is smaller than the density of liquid water, so it floats because its lighter than the equal volume of liquid water
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convection in water
the hot water particles move faster, they bash into each other and knock each other further apart. this means the hot water is less dense. it floats on the denser cold water
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convection in air
the radiator heats up the room by letting of heat, this causes the particles to move around faster which means they spred out and become less dense and float up all around the room.
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facts
the transfer of thermal energy through space from the sun and earth is called RADIATION
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facts
heat energy is transfered through the base of the saucepan by CONDUCTION
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facts
heat energy is tranfered through the water in the saucepan by CONVECTION
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facts
some energy is transfered from the hotplate to the air by RADIATION
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facts
the handle of the sausepan is made from wood because wood is a good INSUALTOR
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independent
the one we change
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dependent
the one we measure as a result
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control
the ones we keep the same
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usefull energy transfer
does what we want
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wasted energy
energy is being dissipated in ways we dont want
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## Other cards in this set

### Card 2

#### Front

the hot water particles move faster, they bash into each other and knock each other further apart. this means the hot water is less dense. it floats on the denser cold water

#### Back

convection in water

### Card 3

#### Front

the radiator heats up the room by letting of heat, this causes the particles to move around faster which means they spred out and become less dense and float up all around the room.

### Card 4

#### Front

the transfer of thermal energy through space from the sun and earth is called RADIATION

### Card 5

#### Front

heat energy is transfered through the base of the saucepan by CONDUCTION

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