How does the mass of a substance affect how quickly its temperature changes when it is heated?
The greater the mass of an object, the more slowly its temperature increases when it is heated.
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What else affects how quickly the temperature of a substance changes when it is heated?
The rate of temperature change of a substance when heated depends on: the energy supplied to it, its mass and its specific heat capacity.
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How do storage heaters work?
Storage heaters use off-peak electricity to store energy in special bricks.
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What is the formula for specific heat capacity?
E = m x c x
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What is specific heat capacity?
Energy needed by 1kg of the substance to raise its temperature by 1'C.
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How can we reduce the rate of energy transfer from our homes?
Energy transfer from our homes can be reduced by fitting: loft insulation, cavity wall insulation, double glazing, draught proofing and aluminium foil behind radiators.
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What are U-values?
U-values tell us how much energy per second passes through different materials.
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Name an advantage of solar heating panels?
Solar heating pannels do not use fuel to heat water so are cheap to run.
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Name a disadvantage of solar heating panels?
Solar heating panels are expensive to buy and install. They also do not generate electricity during the night.
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What is a solar heating pannel?
Sealed panel designed to use sunlight to heat water running through it.
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Other cards in this set
Card 2
Front
What else affects how quickly the temperature of a substance changes when it is heated?
Back
The rate of temperature change of a substance when heated depends on: the energy supplied to it, its mass and its specific heat capacity.
This is affected by the specific heat capacity, thermal conductivity and weight of the substance, and you can see the mutual influence from Newton's law of cooling. You may learn more from an actual engineering design case. This technical blog post introduces how to design a battery dummy. You can refer to related blog posts.
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