Across
- 3. wave that makes the particles of a medium move bask and forth parallel to the direction the wave travels
- 7. wave in which the disturbance is perpendicular to the direction the wave travels
Down
- 1. wave that can travel through empty space or through matter
- 2. wave that travels only through matter
- 4. maximum distance a wave varies from its rest position
- 5. change in direction of a wave as it changes speed, moving from one medium into another
- 6. the number of wavelengths that pass a point each second