Final answer:
The statement is false; the amplitude of one wave can be affected by another through interference, whether constructive or destructive, regardless of precise alignment.
Step-by-step explanation:
The statement "The amplitude of one wave is affected by the amplitude of another wave only when they are precisely aligned." is false.
Waves can interfere with each other in various ways, not only when they are precisely aligned.
When two waves meet, they superimpose and the resulting wave is the sum of the amplitudes of the individual waves, a principle known as superposition. If the waves meet in phase (the crests of both waves align), it results in constructive interference, leading to a larger amplitude.
When they meet out of phase (a crest meets a trough), it results in destructive interference, which can lead to a smaller amplitude or even cancellation.