Standard Science Primary 6 Energy

Which of the following shows the energy conversion when a person climbs up a ladder?

A Chemical potential energy → Kinetic energy → Gravitational potential energy
B Chemical potential energy → Gravitational potential energy → Light energy
C Kinetic energy → Gravitational potential energy → Chemical potential energy
D Gravitational potential energy → Kinetic energy → Heat energy
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Worked Solution

Step 1: The person uses energy stored in their body (Chemical Potential Energy). Step [2-9]: This energy is used to move the muscles (Kinetic Energy). Step [2-9]: As the person gains height, the kinetic energy is converted into Gravitational Potential Energy.

Correct answer: Chemical potential energy → Kinetic energy → Gravitational potential energy

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