Advanced Science Primary 6 Interactions

A 10kg block is moved from Earth to the Moon. The Moon's gravity is 1/6 that of Earth. Which statement is correct?

A The mass remains 10kg, and the weight increases.
B The mass becomes 1.6kg, and the weight decreases.
C Both mass and weight remain exactly the same.
D The mass remains 10kg, but the weight decreases.
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Worked Solution

Step 1: Mass is the amount of matter and is constant everywhere. Step [2-9]: Weight is the pull of gravity on that mass. Step [2-9]: Since the Moon has weaker gravity, the weight decreases while mass stays at 10kg.

Correct answer: The mass remains 10kg, but the weight decreases.

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