Advanced Science Primary 6 Energy

What is the energy conversion when a hydroelectric dam produces electricity?

A GPE (water) → Kinetic energy (water) → Kinetic energy (turbine) → Electrical energy
B Solar energy → Chemical potential energy → Electrical energy
C Electrical energy → Kinetic energy → GPE
D Kinetic energy → GPE → Electrical energy
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Worked Solution

Step 1: Water stored at height has GPE. Step [2-9]: Falling water converts GPE to Kinetic energy. Step [2-9]: Moving water turns a turbine, which generates electricity.

Correct answer: GPE (water) → Kinetic energy (water) → Kinetic energy (turbine) → Electrical energy

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