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Across 3. Do sound waves travel faster through hot/cool air? 4. The maximum distance a point moves from rest position. 7. A ... uses the echo-sounding principle. 10. Sound waves can be displayed graphically using an ... 13. The bending of waves around an obstacle 14. What kind of aves are sound waves? 15. Muaical scales are based on these 16. The distance between any point on the wave and the equivilent on the next 17. Sound waves travel fater/slower through liquids than gases? 18. You can scan the womb using ...

Down 1. If you times frequency and wavelength waht do you get? 2. Sound waves are caused by ... 3. The unit of measuring frequency. 5. ... surfaces reflect sounds and cause echoes. 6. Another word used for quality 7. When a wave hits of the surface at the same angle it hits it is called ... 8. What are the movements of waves called? 9. The time for one oscillation is called a ... 11. It is called ... when waves slow down and change direction. 12. There are longitudonal waves and ... waves.