SI Units

SI Units

Physical quantities

exeriments play an important part in science and most experiments require measurements. a physical quantities is a quatity that can be measured. physical quantities can be further divided into base quantity and derived quantity

SI

Systeme International d'Unites

International System

Let's us see the video about SI

https://www.youtube.com/watch?v=oAtDAoqdExw

Base quantity

base quantity are physical quantities that cannot be expressed in relation to other physical quantities. there are 7 base quantities in science. They are called SI base units, as in the following table:

Derived quantity

• from the 7 base quantities, quantities for the volume, frequency, velocity and others can be derived. these types of quantities are called derived quantities.

Prefixes