Standard Science Primary 6 Energy

Identify the energy conversion that occurs in a solar-powered garden light at night.

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

Step 1: During the day, solar panels convert light to chemical energy in the battery. Step [2-9]: At night, the battery stores chemical potential energy. Step [2-9]: This is converted to electrical energy and then to light and heat in the bulb.

Correct answer: Chemical potential energy -> Electrical energy -> Light energy + Heat energy

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