the international system of units (si) is a revision of the 1. system. there are 2. si base units. in si, the base unit of length is the 3.
the space taken up by a cube that is 10 cm on each edge is one 4. a measure of the pull of gravity on an object of given mass is its 5. the mass of one cubic centimeter of water at 4°c is one 6. scientists commonly use two equivalent units of temperature, the degree 7. and the the 9. and the 10. are common units of energy.