Sound

Across

• 1. The distance from the rest position to the crest or trough of a wave (9)
• 4. The number of waves that pass a point in one second (9)
• 5. The type of sound used to study unborn babies (10)
• 9. The shortest distance before a wave pattern repeats (10)
• 10. Both wavelength and amplitude can be measured in........ (6)