Energy can change from one type of energy into another.
This happens in nature and in many of the machines we use.
- In an electric fan, electrical energy is transformed into the mechanical energy of the moving parts.
- In a car, the chemical energy of the eptrol is transformed into thermal energy, then into the machanical energy.
- When you switch on a light bulb, electrical energy is transformed into light energy.
- In a toaster, electrical energy is transformed into thermal energy.
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