Final answer:
Waves with different frequencies can superimpose to form a new wave pattern, demonstrating that the statement is true.
Step-by-step explanation:
The statement that waves can superimpose if their frequencies are different is true. When two waves of different frequencies intersect, they will superimpose, meaning they will add together at the points they meet. This superposition results in the formation of a new wave pattern that is a combination of the two original waves. This applies to all types of waves, including sound, light, and water waves.
An example of this is two sound waves of different frequencies coming together to form beats, which are a result of constructive and destructive interference causing fluctuations in loudness. It is also true that the two types of interference are constructive and destructive interferences. Moreover, the amplitude of one wave can be affected by the amplitude of another wave even when they are not precisely aligned, making the related statement false.