Light & Sound

5. the height of anything above a given planetary reference plane, especially above sea level on earth.
6. the distance, measured in the direction of propagation of a wave, between two successive points in the wave that are characterized by the same phase of oscillation.
8. the change of direction of a ray of light, sound, heat, or the like, in passing obliquely from one medium into another in which its wave velocity is different.
10. the entire spectrum, considered as a continuum, of all kinds of electric, magnetic, and visible radiation, from gamma rays having a wavelength of 0.001 angstrom to long waves having a wavelength of more than 1 million km.
12. permitting light to pass through but diffusing it so that persons, objects, etc.
14. curved like a segment of the interior of a circle or hollow sphere

1. a wave in which the direction of displacement is perpendicular to the direction of propagation, as a surface wave of water.
2. having the property of transmitting rays of light through its substance so that bodies situated beyond or behind can be distinctly seen.
3. a wave in which the direction of displacement is the same as the direction of propagation, as a sound wave.
4. position of a single sound in the complete range of sound.
7. The act of reflecting or the state of being reflected
9. the state or fact of being frequent; frequent occurrence
11. not transparent or translucent; impenetrable to light; not allowing light to pass through.
13. having a surface that is curved or rounded outward.