Praxis 5005 Practice Question
An astronaut travels to the Moon, where the magnitude of the force of gravity is one-sixth the magnitude of the force of gravity on Earth. On the Moon, which of the following is true?
Correct Answer: B
Rationale: An astronaut's mass remains constant regardless of location, so option A is incorrect; mass on the Moon is the same as on Earth. Option C mistakenly suggests that mass increases, which contradicts the principle that mass is an intrinsic property. Option D is also incorrect because weight, which depends on gravitational force, decreases on the Moon due to its lower gravity. Thus, the astronaut's weight on the Moon is one-sixth of that on Earth, accurately reflected in option B. This demonstrates the relationship between gravity and weight while keeping mass unchanged.
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