Final answer:
When moving towards and then away from the source of a sound wave, the pitch of the sound will change.
Step-by-step explanation:
When you are moving toward the source of a sound wave and then pass the source and continue moving away, the pitch of the sound will change. The pitch of a sound refers to its frequency, which is the number of vibrations or cycles per second. As you move towards the source, the frequency of the sound waves increases, resulting in a higher pitch. Conversely, as you move away from the source, the frequency decreases, causing the pitch to become lower.
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