Across
- 4. Number of complete waves that move past a certain point in one second.
- 6. Word to describe an object that gives off light or glows in the dark.
- 7. Does not allow light to travel through.
- 10. White light that is broken up into different colours of light.
- 11. Ability of a wave to change direction when it passes from one medium to another.
- 12. Lit up or provided with light.
Down
- 1. Length of one wave pattern.
- 2. Pattern created by the repeated up and down movement of a medium when energy moves through it.
- 3. Light that has changed direction, but continues to travel in the orginal material.
- 5. diagram, Diagram that uses line with arrowheads to show the part of a ray of light.
- 8. Light travels to the material and is unable to travel any further.
- 9. Process in which light moves away from its orgin.