Across
- 3. careful study of something
- 5. ability of something or someone to do work or produce heat
- 6. large group of stars that travel together through space
- 7. device that produces a narrow strong beam of light
- 9. science discoveries and skills that are put to use
- 10. study a subject, usually using books and doing experiments
- 12. study of living things and how they behave
- 14. study of the earth
Down
- 1. smallest part of a substance that can still be recognized as the substance
- 2. anything that takes up space
- 4. study of matter and energy
- 8. planets, suns, stars and space
- 11. study of nature and the universe
- 13. test that scientist use to discover or prove something