Standard Science Primary 6 Energy

What is the main energy conversion that takes place in a solar-powered street lamp during the night?

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

Step 1: Solar lamps store energy in a battery during the day. Step 2: At night, the stored chemical potential energy is converted to electrical energy. Step 3: The electrical energy is then converted to light energy to illuminate the street.

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

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