00:01
So this question wants you to compare a base unit and a derived unit and then list the derived units that are commonly used for both density and volume.
00:11
So essentially a base unit is defined as a unit in a system of measurement that is based on an object or event in the physical world.
00:20
So based on table 2 .1 in your book it lists the seven groups or the seven different base units.
00:28
So for example, you have time, you have length, you have length, you have mass, you have temperature, amount of a substance, etc.
00:36
So these are kind of what make up your building blocks.
00:39
Your derived units then are defined by a combination of base units.
00:45
So you can take these base units and essentially combine them in different ways to get what's known as your derived unit.
00:51
So for example, for derived unit, one example is density.
00:56
And so density is defined as your amount of mass per unit of volume.
01:01
So this is your mass over volume...