Final answer:
The statement is false, as waves can affect each other's amplitude through interference, even if not perfectly aligned, resulting in constructive or destructive interference.
Step-by-step explanation:
The statement that the amplitude of one wave is affected by the amplitude of another wave only when they are precisely aligned is false. Waves can interact with each other in a phenomenon known as interference. When two waves meet, they superimpose, resulting in a new wave pattern. This can occur even if they are not perfectly aligned. The combined amplitude of the waves can be higher (constructive interference) or lower (destructive interference) depending on how the waves overlap.