| Term | Definition |
| Scientific Method | an organized set of investigational procedures |
| Hypothesis | a possible explanation for a problem |
| Dependent Variable | the value that changes when you manipulate (change) the other variable. (your results) |
| Independent Variable | the variable you control |
| Constant | a factor that is the same for all groups |
| Control | the standard by which your results are compared |
| Model | representation of an idea, object, or event |
| Scientific Theory | possible explanation based on knowledge gained from many observations or investigations |
| Scientific Law | statement of what happens in nature (not an explanation) |
| Technology | application of science to improve the quality of life |
| Standard | exact quantity that people agree upon to use for comparison |
| Volume | the amount of space occupied by an object |
| Mass | the amount of matter in an object |
| Derived Unit | unit obtained by combining two or more units |
| Density | mass per unit volume |
| Graph | visual display of information |