Before we get into answering your question, we need to define weight and mass.

The mass of an object is the quantity of matter it possesses. The important thing to remember about mass is that it is constant, and therefore if you are on Earth, the Moon, Mars, or anywhere, your mass is always going to be the same.

Weight is defined as the product of a body's mass and the gravitational acceleration in which the mass is located. (Weight = Mass x Gravity) What this means is that your weight depends on both your mass (which doesn't change) and the gravitation force of the place you are located.

A place with less gravity would cause an object to have less weight. The moon is much smaller than the earth. So on the moon, where there is less gravity, you would weigh less than you do on Earth where there is more gravity.

The force of gravity on the moon is only about one sixth as strong as gravity on Earth. Gravity is what holds us down on the earth's (or moon's) surface. If you were to weigh yourself on a scale on Earth and then on the moon, the weight read on the moon would be 1/6 your earth weight. To figure out how much YOU would weigh on the moon, take your weight and divide it by 6.

So, if you weighed 100 pounds on Earth, you would weigh only about 16 pounds on the moon. If you weigh 60 pounds on Earth, on the moon you will weigh about 10 pounds. If you weigh 120 pounds on Earth, you will weigh about 20 pounds on the moon.

Since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity. If you weigh 100 pounds on the Earth, you would weigh more on a larger planet... like Jupiter where you would weigh about 236 pounds.