2022 GENERAL SCIENCE 1 (CONTENT)

Attached here is a table showing the 3 basic quantities and why are the regarded as quantities.

They are the building block of other concepts, other units are referred to as the Derived units. 

such units as volume, density, speed, and force. 

Instruments are used to produce accurate and precise measurements. That is measurement with the least amount of error.  

Different types of instruments and units such as rulers, are meant to measure different characteristics of objects such as lengths and shapes.