Lesson 2 - Measuring Matter

Weight is a measure of the force of gravity on an object. The force of gravity depends on the mass of the planet or moon where the object is being weighed. We use kg, g, mg, ect. Weight can be changed wherever you are, for example, if you were on mars, your weight would be smaller than your weight on Earth.

Weight changes as the force of gravity changes. Mass is measured by determining the extent to which a particle or object resists a change in its direction or speed when a force is applied. We measure mass with kilos, grams, tonnes. To find mass we take density times volume (m = d.v)

A volume is simply defined as the amount of space occupied by any three-dimensional solid. These solids can be a cube, a cuboid, a cone, a cylinder or a sphere. Different shapes have different volumes.