Across
- 2. the number of wave lengths that pass by a point each second.
- 3. Are waves that can travels through matter or empty space.
- 6. Wavelengths that are greater then 0.3 meters
- 8. Causes practicals in matter to move back and forth along the same direction the wave travels.
- 9. A disturbance that moves through matter or space.
Down
- 1. The change in direction of a wave when it changes speed as it travels from one material to another
- 3. The complete range of electromagnetic wave frequencies and wave lengths.
- 4. Causes practicals in matter to move back and forth at right angles to the direction in which the wave travels.
- 5. The distance between one point on a wave and the nearest point moving with same speed and direction
- 7. The angle that incoming wave makes withe the normal equals the angle that the outgoing makes with the normal.