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Mini-Quiz: Gravity on Earth versus on Moon

by Ron Kurtus

Take this Mini-Quiz to check your understanding of the lesson material.

1. Why is the radius of the Earth used in deriving the gravity constant?

It is not a factor in the derivation

It is an extremely large number that makes gravity constant

It is the separation between the Earth's center and that of an object on the surface

2. What is the acceleration due to gravity on the Moon?

9.8 m/s2

1.62 m/s2

There is no acceleration on the Moon

3. What is the comparison of the masses of the Earth and Moon?

The mass of the Moon is 81 times that of the Earth

They weigh the same

The mass of the Earth is 81 times that of the Moon

If you got all three correct, you are on your way to becoming a Champion in Physics. If you had problems, you had better look over the material again.

Move on a steady course in your life

Resources and references

Ron Kurtus' Credentials


Radius of the Earth - Universe Today

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Mini-Quiz: Gravity on Earth versus on Moon

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