Standard Science Primary 6 Energy

Which of the following shows the energy conversion that occurs in a solar-powered garden light at night?

A Light energy → Electrical energy → Light energy
B Electrical energy → Kinetic energy → Light energy
C Chemical potential energy → Electrical energy → Light energy + Heat energy
D Kinetic energy → Electrical energy → Heat 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, the battery converts chemical energy into electrical energy. Step [2-9]: The LED bulb converts electrical energy into light and heat.

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

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