The following are true of mass:

• Mass measures the amount of matter in an object.


• Mass remains the same for an object regardless of its location.


• Mass can be measured using a pan balance by balancing one object against another object with a known mass.


• Units used to measure mass are usually milligram, gram, and kilogram.


• Mass is not influenced by gravity.

Use the link below to further study examples of mass.

Mass Activity

Weight

Weight depends on location and is influenced by gravity. A person standing on the moon will weigh less than he or she does on Earth. If a person could stand on Jupiter, he or she would weigh more than he or she does on Earth. However, the mass of the person remains the same.