I travel fastest through solids, but I am not a train. What am I?

Category: Science · Difficulty: medium

Hint: Think about how vibrations move through different mediums.

Answer

Sound waves

Explanation

Sound waves travel faster in solids than in gases and liquids, unlike light and radio waves which travel fastest in a vacuum.

This is a medium science riddle — a moderate challenge for most people. The answer is Sound waves.

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