alleryWhat causes the sound of thunder?
AClouds colliding with each other
BWind rushing through tall trees
CRain hitting the ground hard
DA shock wave from rapidly heated air
Answer & Solution
Correct answer: D. A shock wave from rapidly heated air
1. Lightning heats the air along its path to extreme temperatures.
2. The heated gases suddenly increase in pressure and expand, forming a shock wave heard as thunder.
3. Clouds do not collide to make sound, and rain or wind are not the source.
_Source: Wikipedia, Lightning (lead section)_
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