| A | B |
|---|
| mass | the amount of matter in an object |
| volume | the amount of space an object takes up |
| matter | anything that has mass and volume |
| weight | how hard gravity pulls on an object |
| density equation | mass divided by volume |
| length | the distance from one point to another |
| qualitative observation | an observation in which you use your 5 senses |
| quantitative observation | an observation that involves numbers or measurments |
| control | something you keep the same in an experiment |
| variable | something you change in an experiment |
| hypothesis | an educated guess about what will happen in an experiment |
| procedure | step by step instructions about what to do in an experiment |
| graduated cylinder | a tool used to measure volume |
| liter | the base unit of volume |
| gram | the base unit of mass |
| meter | the base unit of length |
| triple beam balance | a tool used to measure mass |
| Customary System | the system of measurement used by citizens in the U.S. |
| metric system | the system of measurement used by scientists and most countries around the world |
