Question on: SS3 Physics - Introduction to Waves

The word that cannot be used to describe wave motion is "Saturation". The other words (vibration, oscillation, undulation, and disturbance) are all related to the movement and propagation of waves.

• Vibration: A repetitive back-and-forth motion, a fundamental characteristic of wave generation.
• Oscillation: A repetitive variation, typically in time, describing the wave's fluctuating nature.
• Undulation: A wavelike motion, which is a direct description of how waves move.
• Disturbance: An interruption of a state of rest or equilibrium; waves are disturbances that propagate through a medium.
• Saturation: Refers to the point at which a substance can no longer absorb any more of another substance, which is not applicable to wave motion.