Across
- 3. to carefully watch
- 7. the study of living organisms
- 9. factors that stay the same
- 12. is changed during experiment
- 13. educated guess
- 14. to examine data
- 15. factor observed during experiment
Down
- 1. the study of space
- 2. the end of the experiment
- 4. to test your hypothesis
- 5. is not changed during experiment
- 6. something based on knowledge
- 8. something that is always true
- 10. the study of natural events
- 11. means live