Final answer:
True, the amplitude of one wave can affect the amplitude of another wave only when they are precisely aligned.
Step-by-step explanation:
True, the amplitude of one wave can affect the amplitude of another wave only when they are precisely aligned. This phenomenon is known as constructive or destructive interference, depending on whether the waves reinforce or cancel each other out. For example, when two waves with the same amplitude and frequency and a phase difference of 180 degrees (precisely aligned troughs and crests) superimpose, they cancel each other out, resulting in zero amplitude.