Across
- 5. free from an echo
- 6. maximum displacement
- 9. measured in hertz
- 12. a wave that needs a medium to propagate
- 13. resulting from pressure and latent heat
- 14. the reciprocal of period
- 15. perpendicular to propagation
- 16. mechanical energy
- 17. in phase wave addition
Down
- 1. sound above human hearing
- 2. ultrasound to measure blood flow
- 3. mass per unit volume
- 4. same direction as the propagation
- 7. navigate using sound
- 8. interference with a sum of zero
- 10. denoted by the Greek letter "lambda"
- 11. average kinetic energy in a system