1. Length: The measurement of distance between two points. Its SI unit is the meter (m).

2. Mass: The amount of matter in an object. Its SI unit is the kilogram (kg).

3. Time: The duration of events. Its SI unit is the second (s).

4. Electric Current: The rate of flow of electric charge. Its SI unit is the ampere (A).

5. Temperature: The degree of hotness or coldness of a body. Its SI unit is the Kelvin (K).

6. Amount of Substance: The amount of matter in a system, expressed in terms of a number of elementary entities. Its SI unit is the mole (mol).

7. Luminous Intensity: The power emitted by a light source in a particular direction. Its SI unit is the candela (cd).

These fundamental quantities are considered to be independent of each other and cannot be defined in terms of other quantities. They form the basis for all other physical quantities, which are derived from these seven.