Across
- 1. vibrations parallel to direction of wave travel
- 3. region of low pressure
- 4. region of high pressure
- 5. Time taken for one complete vibrations
- 7. no of complete vibrations per unit time
- 9. continuous disturbance in a medium
Down
- 2. vibrations perpendicular to direction of wave travel
- 6. wave that can travel through vaccum
- 8. single disturbance in a medium