Using a bowling ball as an example, what is mass and how is it measured?
On earth, mass and weight are identical. Mass is the amount of matter that gets pulled by gravity. Mass stays the same whatever gravity is pulling the bowling ball – a bowling ball on jupiter has the same mass as on earth. Weight, however, depends on the gravitational force. For example, on Jupiter, there is more gravity, so your bowling ball will be heavier than on earth. In a vacuum, your bowling ball will have no weight, but still the same mass. http://www.colorado.edu/physics/2000/periodic_table/mass.html I hope that that is what you mean.
