| A | B |
|---|
| data | information gathered by observation or experimenting |
| International System (SI) | metric system |
| gram | basic unit used to measure mass |
| mass | amount of matter in an object |
| volume | amount of three dimensional space |
| theory | well tested explanation that is consisten with all available evidence |
| quantitative observation | one that involves numbers |
| qualitative observation | description without numbers |
| variable | factor that can change |
| constant | factor that does not change |
| independent variable | the one thing being tested |
| dependent variable | the answer to the question or the result of the experiment |
| controlled variables | all the things that are kept the same, so results will not be affected |
| curious, skeptical, observant | scientific habits |
| hypothesis | a reasonable explanation |
| inference | an explanation based on observations |
| operational definition | clear and precise--allows duplication |
