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Energy Transformation - Secondary 4
| Science and Technology
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Energy transformation is an electrical function performed by any electrical component capable of transforming electrical energy into another form of energy.
A light bulb, a heating element, an electric motor, a speaker, an audible warning device and a piezoelectric crystal are all components that transform energy in an electrical circuit.
The light bulb in a flashlight
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A light bulb transforms electrical energy into radiant energy.
The heating element in a toaster
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A heating element transforms electrical energy into thermal energy.
The motor of an electric toy car
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An electric motor element transforms electrical energy into mechanical energy.
A speaker
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A speaker transforms electrical energy into mechanical energy (sound).
An audible warning device
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An audible warning device, or an alarm, transforms electrical energy into mechanical energy (sound).
A piezoelectric crystal inside a quartz watch
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A piezoelectric crystal transforms electrical energy into mechanical energy (vibration). In a quartz watch, electrical oscillations cause the crystal to vibrate. These vibrations are used to measure time.
A piezoelectric crystal can also transform mechanical energy into electrical energy. In this capacity, it functions as a power supply.