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Precise Learning Objective |
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Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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The amount of energy stored in or released from a system as its temperature changes can be calculated using the equation:
change in thermal energy = mass ? specific heat capacity
? temperature change |
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What equation is used to calculate change in thermal energy? Create Physics equation flashcard
PiXL Physics equation practice
Practise calculations for specific heat capacity |
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Use calculations to show on a common scale how the overall energy in a system is redistributed when the system is changed. |
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How much energy is needed to increase the temperature of 500 g of lead from 20oC to 45oC? The specific heat capacity of lead is 128 J/kg oC. Determine the SHC o |
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The specific heat capacity of a substance is the amount of energy required to raise the temperature of one kilogram of the substance by one degree Celsius. |
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What is meant by the term 'specific heat capacity'? |
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Power is defined as the rate at which energy is transferred or the rate at which work is done. |
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What is meant by the term 'power'? |
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Students should be able to describe how the rate of cooling of a building is affected by the thickness and thermal conductivity of its walls.
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How is the rate of a cooling building affected by the thickness and the thermal conductivity of it's walls? |
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Students should be able to give examples that illustrate the definition of power eg comparing two electric motors that both lift the same weight through the same height but one does it faster than the other. |
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What definition is illustrated in the following example: comparing two electric motors that both lift the same weight through the same height but one does it faster than the other? |
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The higher the thermal conductivity of a material the higher the rate of energy transfer by conduction across the material. |
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What affect does a higher thermal conductivity have?on the rate of energy transfer? |
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