Across
- 2. object's change in position with respect to time
- 5. yearly motion
- 9. bouncing back of light
- 10. moon blocks out the sun
- 11. gaseous planet
- 15. sun at the center of the universe
- 16. Earth at the center of the universe
- 18. manifestation that light appears in different colors
- 19. disturbance in space and time
Down
- 1. image that appears in different location than its actual
- 2. example of diffraction
- 3. max.distance of the crest to trough
- 4. dwarf planet
- 6. light passes through a medium without being absorbed
- 7. bending of light
- 8. medium that diffracts light
- 12. terrestrial planet
- 13. explained the position of the rainbow
- 14. daily motion
- 17. ancient Babylonian device