Final answer:
The mass of an apple is the same on the moon as it is on Earth, because mass is a constant property of matter that doesn't change with location or gravity. However, the apple's weight would be less on the moon due to the weaker gravitational pull there.
Step-by-step explanation:
The mass of an apple (or any object) on the moon compared to the mass of the same apple on Earth is the same. Mass is a measure of the amount of matter in an object and does not change regardless of location or gravitational pull. An apple's mass is an inherent property that remains constant whether it's on the moon or on the Earth. However, the weight of the apple would change because weight is a force that depends on the gravitational pull acting on an object's mass. On the moon, the gravitational pull is about one sixth of that on Earth, which means the weight of the apple on the moon would be significantly less than its weight on Earth.