| A | B |
| investigation | A procedure carried out to carefully observe,study,or test something in order to learn more about it |
| Science | The study of the natural world |
| evidence | Information collected during a sceintific investigation |
| opinion | A personal belief or judgement based on what a person thinks or feels,but not necessarily based on evidence |
| Scientific methods | The different ways that scientists perform investigations and collect reliable data |
| experiment | An investigation in which all the conditions are controlled to test a hypothesis |
| variable | Any condition that can be changed in an experiment |
| control | The experimental setup to which you will coompare all other setups |