Across
- 4. a wave in which the particles of the medium move perpendicular to the direction of propagation
- 5. the maximum distance a wave varies from its rest position
- 8. red, green and ________ can be combined to produce white light
- 10. a ___________ mirror is a curved mirror with the reflecting surface on the inside of the curve
- 11. the number of complete wavelengths that pass a single point in one second
- 12. the direct production of light as the result of a chemical reaction with little or no heat produced
- 14. a rough surface will produce a ______________ reflection
- 16. according to the rules of reflection, a ray travelling through the focal point will reflect _______________ to the principal axis
Down
- 1. ______________ wavelengths are associated with high frequencies
- 2. production of light as a result of high temperature
- 3. frequency is measured in the unit ______________
- 6. a disturbance which carries energy from one place to another
- 7. a shirt that appears white is ______________ all colours
- 9. a wave in which the particles of the medium move parallel to the direction of propagation
- 13. red light has the ______________ wavelength of the visible spectrum
- 15. light will travel _____________ in denser media
- 17. a ______________ is a piece of transparent material that has been shaped in such a way that it refracts light rays to form an image