As a supersonic aircraft passes, a high-amplitude wave trails behind it as shown. Useful Web Links Shock Waves 19. A. transverse B. longitudinal C. surface D. token Useful Web Links Sound is a Longitudinal Wave 20. A. speed B. amplitude C. frequency D. loudness Useful Web Links Pitch and Frequency 21. Useful Web Links Intensity and the Decibel Scale 22.
Nothing vibrates in space.
Sound waves require a medium. Useful Web Links Sound as a Mechanical Wave 23. Useful Web Links Resonance 24. Two organ pipes of equal length are played at their lowest resonating frequencies. Both pipes will sound the same frequency.