Thus, temperature differences or temperature intervals may be expressed in either the degree Celsius or the kelvin using the same numerical value. The special names and symbols of the 22 SI derived units with special names and symbols given in Table 3 may themselves be included in the names and symbols of other SI derived units, as shown in Table 4.
Table 4. Return to Units home page. Units Topics:. Units Bibliography. SI base units The SI is founded on seven SI base units for seven base quantities assumed to be mutually independent, as given in Table 1. SI base units. Examples of SI derived units. For ease of understanding and convenience, 22 SI derived units have been given special names and symbols, as shown in Table 3.
SI derived units with special names and symbols. Two convenient volume units are the liter, which is equal to a cubic decimeter, and the milliliter, which is equal to a cubic centimeter. The conversion factor would be:. There are thus cm 3 in 1 dm 3 , which is the same thing as saying there are mL in 1 L. There are cm 3 in 1 dm 3. Since a cm 3 is equal to a mL and a dm 3 is equal to a L, we can say that there are mL in 1 L. Convert 3.
Step 1: List the known quantities and plan the problem. This problem requires multiple steps and the technique for converting with derived units. Numerically, the steps are to divide 3. You may find that you can shorten the problem by a step by first determining the conversion factor from mm to cm and using that instead of first converting to m.
There are 10 mm in 1 cm. Step 3: Think about your result. Cubic millimeters are much smaller than cubic centimeters, so the final answer is much less than the original number of mm 3. Use the link below to answer the following questions:. Skip to main content. Search for:. Derived Units Learning Objectives Define derived unit. Carry out unit conversions using derived units. How has farming evolved? Summary A derived unit is a unit that results from a mathematical combination of SI base units.
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