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AQA GCSE · Question 01.1 · Energy
Wind turbines may generate electricity when the electricity is not needed. Two methods that can be used to store the energy from the turbine are:
Method A: Heating water to a high temperature.
Method B: Pumping water uphill into a reservoir.
Which energy store increases when water is heated?
Wind turbines may generate electricity when the electricity is not needed. Two methods that can be used to store the energy from the turbine are:
Method A: Heating water to a high temperature.
Method B: Pumping water uphill into a reservoir.
Which energy store increases when water is heated?
How to approach this question
Identify the type of energy associated with an increase in temperature. The name of the energy store is related to this type of energy.
Full Answer
When water is heated, its temperature increases. This means the kinetic energy of the water molecules increases, causing them to move faster. The energy associated with the temperature of an object is stored in its thermal energy store.
Common mistakes
✗ Confusing thermal energy with chemical or kinetic energy.
✗ Stating "heat energy" - the correct term for the store is "thermal energy".
Practice the full AQA GCSE Physics Higher Tier Paper 1
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