My waves can carry your voice or a song, traveling through the air, yet I am invisible. What am I?

Category: Science · Difficulty: hard

Hint: I require a medium to travel and cannot be seen.

Answer

Audio waves

Explanation

Sound waves are mechanical waves that require a medium like air to travel, unlike light waves which can move through a vacuum.

This is a hard science riddle — a tricky one that takes a little thought. The answer is Audio waves.

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