I am the sound of a vacuum, yet you cannot hear me. What am I that demonstrates the principle of a perfect void?
Category: Science · Difficulty: hard
Hint: Consider where sound cannot travel.
Answer
Stillness
Explanation
In space, there is a vacuum, which means sound waves cannot propagate, hence no sound is heard.
This is a hard science riddle — a tricky one that takes a little thought. The answer is Stillness.
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