| A | B |
|---|
| Control | substance, object or group in an experiment that is not changed |
| Controlled experiment | experiment in which all the variables are kept the same except for the one being tested (fair test) |
| Force | a push or pull |
| Friction | a force that acts in the opposite direction of movement |
| Gravity | force that pulls objects toward each other |
| Magnetism | force that pulls a magnetic material across a distance |
| Motion | change in the position of an object |
| Position | the place where something is located; where something has been put |
| Pull | act of applying force to move something toward or with you |
| Push | act of applying force in order to move something away |
| Reliability | extent to which an experiment, test, or investigation provides the same results on repeated trials |
| Testable hypothesis | idea that can be tested by experiment or observation |
| Valid conclusion | information describing what was learned from an investigation based on observations and collected data |
| Variable | a condition in an experiment that is changed in order to determine the effect of that change |
