Which statement is TRUE about an astronaut traveling from planet to planet?

Question

The mass changes, but his or her weight does not.

The weight and mass both stay the same.

The weight changes, but his or her mass does not.

The weight and mass both change.

Answer 1

The statement that is TRUE about an astronaut traveling from planet to planet is:

The weight changes, but his or her mass does not.

Mass is a measure of the amount of matter in an object and remains constant regardless of location. However, weight is the force exerted by gravity on that mass, which can vary depending on the gravitational pull of the planet the astronaut is on. For example, an astronaut would weigh less on the Moon than on Earth due to the Moon's weaker gravitational pull, but their mass would remain the same in both locations.