Across
- 2. Not visible or able to be seen
- 3. An invention made by Thomas Edison that records sound
- 4. A public building where people sit to listen to concerts
- 7. A musical instrument that is shaped similar to the letter s
- 9. An invention perfected by Henry Ford
- 10. A person's handwritten signature
- 11. A device that measures electromagnatic radiation in the visible light spectrum
- 12. The process that plants use to convert sunlight to energy
- 13. Done without thinging or by itself
- 14. To look and again and make changes
- 16. The study of life
Down
- 1. A device that makes your voice louder
- 5. A device that allows you to watch shows
- 6. A printed picture taken with a camera
- 8. Related to recorded sound
- 10. A medicine used to kill microorganisms
- 13. Heard or capable of being heard
- 15. The story of a person's life written by someone else through research