9
QuizMultiple Choice

Introduction to Matter

Question 9 • Madison 2017 Phy Sci A-35 SS

An object of the same mass has three different weights at different times. Which statement is possible?

Answer
A
The object gains matter and then loses it.
B
The object started on Earth, was transported to space, and was deposited on the moon.
C
The object started at the bottom of a hill, then moved to the top of the hill, and then moved back down to the bottom of the hill.
D
The object changes shape, which changes its weight.

Explanation

Weight depends on an object's mass and the strength of gravity where it is located. An object can have the same mass but different weights on Earth, in space, and on the moon, where gravitational strength differs. So the trip described in choice B can produce three different weights. Moving up and back down the same hill would return the object to the same weight, while gaining or losing matter would change its mass.

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