| Term | Definition |
|---|
| matter | anything that has mass and takes up space |
| buoyancy | the upward force of water, another liquid, or air that keeps things afloat |
| mass | the amount of matter making up and object |
| solid | a state of matter that has a definite shape and takes up a definite amount of space |
| liquid | a state of matter that takes up a definite amount of space but has no definite shape |
| gas | a state of matter that does not take up a definite amount of space and has no definite shape |
| metric system | a system of measurement based on units of 10 |
| length | the number of units that fit along one edge of an object |
| area | the number of unit squares that fit inside a surface |
| volume | the amount of space an object takes up |
| weight | the measure of the pull of gravity between an object and Earth |
| density | the amount of matter in a given space |
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