I grow larger as my temperature rises, but I can also shrink when cooled. What am I?
Category: Science · Difficulty: medium
Hint: Think about how particles behave differently at various temperatures.
Answer
Vapor
Explanation
Gases expand when heated and contract when cooled, due to increased or decreased kinetic energy.
This is a medium science riddle — a moderate challenge for most people. The answer is Vapor.
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