Standard Science Primary 6 Energy

Which of the following describes the energy conversion that occurs when a television is switched on?

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

Step 1: Identify the input energy (electricity from the wall socket). Step 2: Identify the output energies (images/light, audio/sound). Step 3: Recognize that all electrical appliances produce some waste heat.

Correct answer: Electrical energy → Light energy + Sound energy + Heat energy

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