At the heart of the SI is a short list of base units defined in an absolute way without referring to any other units. The base units are consistent with the part of the metric system called the MKS system. In all there are seven SI base units: 1  the meter for distance, 2  the kilogram for mass, 3  the second for time, 4  the ampere for electric current, 5  the kelvin for temperature, 6  the mole for amount of substance, and. 7  the candela for intensity of light.
AA as an academic degree stands for Associates of Arts. The difference between Associates of Arts, Associates of Science, and Associates of Applied Science: Associate degrees fall into three main areas. Associates of Arts (AA)
  The AA degree is Associates of Arts The AA degree is a two year program that fulfills the requirements leading up to the BA degree (an additional 2 years beyond the AA â¦ degree) All the credits earned for the AA degree can transfer to a 4 year university.he AS degree is Associates of Science The AS degree is either a one or two year program depending on your course of study. Some of the credits earned for the AS degree may be able to be transfered to a 4 year university.