Across
- 5. a scientific procedure used to test a hypothesis
- 7. a type of experiment where there are only a factors changed and the rest stay constant
- 8. this variable is the response that is measured
- 10. number of items tested in the experiment
- 11. a ______ years ago the scientific method was founded
- 12. the first step in the scientific method is to make an _____
Down
- 1. a list of steps outlining what to do for an experiment
- 2. a testable explanation
- 3. the _____ group does receive treatment
- 4. observations made during the experiment
- 6. a variable that the experimenter changes on purpose
- 9. a _____ group does not receive treatment