kinetic - When an object speed up which of its energy stores is filled?, chemical - When wood is burnt which of its energy stores is emptied?, thermal - When water is boiled which of its energy stores is filled?, power - What word describe the rate at which energy is transferred?, elasticpotential - When a spring is stretched which of its energy is filled?, watts - Unit power is measured in?, joules - Unit energy is measured in?, wasted - Another word for a non-useful energy transfer., time - A powerful device transfers a large amount of energy in a short amount of…, surroundings - Eventually most energy ends up being transferred to the thermal energy store of the…, system - What word describes an object or group of objects and their surroundings?, efficient - A device which transfers more energy usefully is more…, lubrication - One way of reducing unwanted energy transfers.,

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