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The Metric System
| Term | Definition |
|---|---|
| metric system | a decimal system of weights and measures based on the meter as a unit of length, the gram as a unit of mass, and the liter as a unit of volume |
| centi- | one hundredth of a basic unit of measurement |
| gram | the basic metric unit to measure mass |
| kilo- | one thousand of a basic unit of measurement |
| liter | the basic unit of volume |
| matter | anything that has mass and takes up space |
| meter | the basic metric unit to measure length |
| milli- | one thousandth of a basic unit of measurement |
| scientific theory | a well-tested concept that explains a wide range of observations |
| scientific law | a statement that describes what scientists expect to happen every time under a particular set of conditions |
| density | the measure of how much mass of a substance is contained in a given volume |
| SI | the system of units (SI) used by scientists to measure the properties of matter |
| weight | a measure of the force of gravity on an object |