Across
- 1. First
- 3. Four
- 8. A device which allows physicists to see and analyze light
- 9. Other
- 11. A swinging, hanging weight
- 12. Hang, weigh
- 14. False, fake
- 15. Biological community of organisms
- 16. Opposing another force
Down
- 2. In the order of the letters of the alphabet (first to last)
- 4. Another possibility
- 5. A different (made up) name
- 6. Against, opposite
- 7. The environment
- 10. Having four fingers or toes
- 13. See, watch