The correct response is: Sam and Bella are BOTH correct because the moon exerts less gravity than the Earth AND their mass would be the same on the moon as it is on Earth.
Here's the breakdown:
- Bella is correct in stating that they would weigh less on the moon because gravity is weaker there than on Earth.
- Sam is also correct in saying that their mass would remain the same. Mass does not change based on location or the force of gravity.
Jackie's statement is incorrect because weight is dependent on gravitational force; it would change between Earth and the moon. Therefore, both Sam and Bella have correct points.