Mass is a measure of the amount of matter in an object and does not change in different environments, while weight is the force of gravitational attraction on an object which does change depending on location. Weight is calculated as mass times the acceleration of gravity (w=mg), where mass is measured in kilograms and weight in newtons. On the moon, an object's mass would remain the same but its weight would be about 1/6 of what it is on Earth due to the moon's lower gravity.

1. Mass and Weight

4. Weight Weight is a sensation of force we get as we press against other objects. You press against a scale to measure your weight. What pulls you against the scale?

5. Gravity! Gravity keeps trying to accelerate us toward the earth and we get pressed against things. This gives us the feeling of weight . Our perception of weight can be altered by our environment. Really?

10. Since weight is a product of mass and gravity the equation for calculating weight is… w = mg And what are these units you love so much?

12. N = kg x 9.8 m/s 2 weight mass acceleration of gravity (g) Um.. Excuse me, isn’t that…?