It is measured in grams or kilograms.
On Earth it is the same as mass.
A measuring jug can measure this.
This is different on the Moon because of the force of gravity.
It is measured in millilitres or litres.
This is the amount of space an object or substance occupies.
A balance or a kitchen scale will tell you this about an object.
This is the measure of the force of gravity on matter.
This is the amount of matter in an object.
