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22 Cards in this Set
- Front
- Back
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Heat is a form of..
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energy
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Heat is measured in...
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joules
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Heat always moves from a (..) area to a (..) area
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Hot
Cold |
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Conduction is...
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The transfer of heat through a solid without the particles in the solid moving out of position.
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(...) are very good conductors of heat
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Metals
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An insulator is a....
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substance that does not allow heat to pass through it easily.
Poor conductors |
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Convection is....
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the transfer of heat through a liquid or gas when
molecules of the liquid or gas move upwards and carry heat. |
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radiation is...
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the transfer of heat,
in rays, from a hot object, without needing a medium to pass through. |
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temperature is...
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a measure of how hot an object is.
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Thermometers make use of...
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the fact water expands when heated
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The amount of heat in a substance depends on...
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its temperature, its mass, and what the substance is.
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Latent heat is..
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the heat used by a substance to change its state
it does not change the temperature |
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Light is....
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a form of energy
It can make things move |
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The (...) and the (...) show that light is a form of energy.
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Crookes radiometer
Solar-powered calculator |
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(...) objects give out light
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Luminous
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Reflection is...
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when light bounces back off a surface
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Refraction is..
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the bending of light from one medium to another
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Light ray are always refracted towards...
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the denser medium
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A (....) or (...)lens brings light rays together.
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Convex
Converging |
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A (...) or (...) lens spreads light rays apart
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Concave
Diverging |
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White light is a mixture of colours of the ...
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spectrum
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Dispersion is...
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The breaking up of white light into seven colours
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