| Term | Definition |
| Bias | occurs when a scientist's expectations change how the results of an experiment are viewd |
| Constant | in an experiment a variable that does not change when other variables change |
| Control | standard used for comparison of test results in an experiment |
| Density | mass per unit volume of material |
| Dependent Variable | factor that changes as a result of changes in the other variables |
| Experiment | organized procedure for testing a hypothesis; test the effect on one thing on another under controlled conditions |
| Graph | visual display of info or datathat can provide a quick way to communicate alot of info and allow scientists to observe patterns |
| Hypothesis | educated guess using what you know and what you observe. |
| Independent Variable | factor that as it changes, affects the measure of another variable |
| Mass | the amount of matter in an object |
| Model | can be used to represent an idea, object, or eventtha is too big, too small, too complex, or too dangerous to observe or test directly |
| Scientific Law | about what happens in nature that seems to be true all the time; does not explain why or how something happens |
| Scientific Meathod | organized set of investigation procedures that can include stating a problem, forming a hypothesis, researching and gathering info, testing a hypothesis, analyzing data, and drawing conclusions. |
| Standard | exact, agreed upon quality used for comparison |
| Technology | application of science to help people |
| Variable | factor that can cause a change int the results of an experiment |
| Volume | amount of space occupied by an object |