I can be measured in beats, yet I am not a heart. What phenomenon am I?
Category: Science · Difficulty: hard
Hint: I require a medium to travel and can be heard but not seen.
Answer
Sound vibrations
Explanation
Sound waves are vibrations that travel through a medium (like air) and are perceived by our auditory system.
This is a hard science riddle — a tricky one that takes a little thought. The answer is Sound vibrations.
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