| Word | Definition |
|---|---|
| Hypothesis | A testable explanation of something observed. E.g. adding salt to water makes it boil faster. |
| Theory | Explain a broad range of observations and make predictions, usually backed up by boatloads of evidence. |
| Law | Describe a phenomenon, usually using a mathematical equation, but does not explain why the phenomenon occurs. E.g. The equation for the force of gravity |