For this reason, science observations must be measured using standards that are available around the world. The International System of Measurement - SI , is commonly called the metric system in the United States. Each of the units within this system has an unchanging standard found in nature all over the earth. All science measurements are made using this system. Celsius degrees - unit of temperature Comparisons of temperature scales .
Derived units are combinations of basic units.
You can see that the volume units above are combinations of length units. This makes volume a derived unit. Density is another derived unit that will be used in this class. Density is found by dividing mass by volume and is usually expressed in grams per cubic centimeter. When you use the Metric System, your mind is comparing it to the English System.