Standard Science Primary 6 Interactions

Ravi weighed a 1kg mass on Earth and then on the Moon. He found that the mass was the same, but the weight was different. Why?

A The Moon's gravitational pull is weaker than Earth's.
B The Moon has no gravity.
C Mass changes depending on the location.
D Air resistance on the Moon is higher than on Earth.
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Worked Solution

Step 1: Define mass (amount of matter) and weight (gravitational pull on an object). Step 2: Understand that mass does not change with location. Step 3: Weight changes because the strength of the gravitational pull varies between celestial bodies. Step 4: The Moon is smaller and has a weaker gravitational pull than Earth.

Correct answer: The Moon's gravitational pull is weaker than Earth's.

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