Question

astronauts on the apollo 17 mission to the moon in 1972 brought back samples of moon rocks to earth. which statement accurately describes the of the moon rocks on both the moon and on earth?

a. the moon rocks had the same mass on the moon as they did on earth, but they weighed more on earth.

b. the moon rocks had the same weight on the moon as they did on earth, but they had a greater mass on earth.

c. the weight and mass of the moon rocks was greater on earth than on the moon, and the rocks had no weight or mass during the trip when gravity was zero.

d. the weight, but not the mass, of the moon rocks was greater on earth than on the moon, and the rocks had no weight or mass during the trip when gravity was zero.

Explanation:

Mass is a measure of the amount of matter in an object and is constant regardless of location. Weight is the force exerted on an object due to gravity. The gravitational force on Earth is greater than on the moon. So, the mass of moon - rocks is the same on the moon and Earth, but they weigh more on Earth due to stronger gravity.

Answer:

A. The moon rocks had the same mass on the moon as they did on Earth, but they weighed more on Earth.