. the degree of exactness of a measurement; described by the number of significant digits used to express the value scientific notation 2. a branch of mechanics dealing with the mathematical methods of describing motion mass 3. the degree to which a measurement approaches a standard or true value kinematics 4. the quantity of matter that a body possesses model 5. units calculated by multiplication or division from measurements in base units time 6. a mathematical problem-solving method that utilizes conversion factors derived unit 7. number expressed as powers of ten SI system 8. that which flows onward uniformly field 9. an international standardized system of units used to communicate scientific results dimensional analysis 10. a region in space that yields a value for a measurable quantity at every point accuracy 11. a mental or physical construct that describes a physical phenomenon precision