Transverse waves move material sideways rather than compressing it along the travel direction

Evidence

In a transverse wave, instead of being pushed and pulled toward each other, the golf ball (referred to earlier) is moved from side to side— this causes a lateral disturbance to be propagated due to the forces exerted by the springs on the golf balls, as described earlier. This type of wave is known as a “transverse wave” and is often found in the vibrations of parts of musical instruments, such as strings, or thin membranes. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 98

Categorization

• DEFINE: Defines transverse waves in contrast to longitudinal compression waves, the book’s core distinction.
• corroborated: 2 independent passages support this claim — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 98