Step-by-step explanation: The International System of Units (SI) is a metric system of measurement that is widely used in science, engineering, and commerce throughout the world. The SI has seven base units that correspond to different physical quantities:
1. Meter (m) - unit of length
2. Kilogram (kg) - unit of mass
3. Second (s) - unit of time
4. Ampere (A) - unit of electric current
5. Kelvin (K) - unit of temperature
6. Mole (mol) - unit of amount of substance
7. Candela (cd) - unit of luminous intensity
These base units can be combined to form derived units, such as the Newton (N), which is the unit of force, and the Joule (J), which is the unit of energy. Prefixes can also be used to express larger or smaller units, such as millimeters (mm) or kilowatts (kW).
The SI provides a standardized system of measurement that is used by scientists, engineers, and other professionals around the world. It is based on fundamental physical constants, such as the speed of light and the Planck constant, which allows for precise and accurate measurements.