Speed, density and pressure are examples of compound measures which means they are made up of two or more other measures. For example, speed is made up of distance and time. To convert the units of ...

Density is a way of comparing how heavy different materials are. It is a measurement of the amount of a substance contained in a certain volume. The density of any solid is the mass of the object ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...