Across
- 1. allows all light to pass through
- 6. shadow formed by a point source
- 8. causes white light to separate into colors
- 9. light bends in going to another medium
- 10. colors seen when rain falls
Down
- 2. formed when an opaque object blocks light
- 3. light bounces of an object
- 4. a line perpendicular to a surface
- 5. formed when sun earth moon in straight line
- 7. this depth is less than real depth