Standard Science Primary 6 Energy

What is the main energy conversion that takes place in a solar-powered garden light at night?

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

Step 1: During the day, solar energy is stored in the battery as chemical potential energy. Step [2-9]: At night, this chemical energy is converted to electrical energy. Step [2-9]: The bulb converts electrical energy to light and heat.

Correct answer: Chemical potential energy → Electrical energy → Light energy + Heat energy

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