Standard Science Primary 6 Energy

A solar-powered calculator is used in a brightly lit room. What is the main energy conversion taking place?

A Electrical Energy → Light Energy → Heat Energy
B Heat Energy → Electrical Energy → Kinetic Energy
C Light Energy → Chemical Energy → Electrical Energy
D Light Energy → Electrical Energy → Light Energy
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Worked Solution

Step 1: Solar cells capture Light Energy. Step 2: This is converted into Electrical Energy to power the device. Step 3: The LCD screen then converts electricity into Light Energy for us to see numbers.

Correct answer: Light Energy → Electrical Energy → Light Energy

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