| A | B |
| milli- | x .001 |
| centi- | x .01 |
| gram | base unit to measure mass |
| meter | base unit to measure distance |
| liter | base unit to measure volume |
| kilo- | x 1000 |
| mass | the amount of matter in an object |
| volume | the amount of space an object takes up |
| problem | the question to be investigated |
| hypothesis | the educated guess to try to answer the question |
| materials | list of supplies needed for investigation |
| procedure | list of steps to follow in investigation |
| observations | data collected, measurements, descriptions |
| conclusions | answer to question using observations |
| control | Part of experiment used to compare your data to |
| independent variable | variable or characteristic you choose to change |
| dependent variable | variable or characteristic that changes as a result of the independent variable |
| balance | used to measure mass |
| graduated cylinder | used to measure volume |
| meter stick | used to measure distance |
| qualitative data | Data that involves a description |
| quantative data | Data that involves numbers |