Foundation Science Primary 6 Energy

Siti uses a battery-operated radio. What is the main energy conversion that takes place when the radio is switched on?

A Chemical potential energy → Sound energy
B Chemical potential energy → Electrical energy → Sound energy
C Electrical energy → Chemical potential energy → Sound energy
D Electrical energy → Sound energy + Heat energy
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Worked Solution

Step 1: The batteries store chemical potential energy. Step [2-9]: When the circuit is closed, this is converted to electrical energy. Step [2-9]: The radio components convert the electrical energy into sound energy.

Correct answer: Chemical potential energy → Electrical energy → Sound energy

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