'''Thunder''' is the [[sound]] produced by [[lightning]]. The sound is, more specifically, the result of [[supersonic]] [[shock waves]] produced by the [[superheating]] of the air directly surrounding the lightning bolt. | '''Thunder''' is the [[sound]] produced by [[lightning]]. The sound is, more specifically, the result of [[supersonic]] [[shock waves]] produced by the [[superheating]] of the air directly surrounding the lightning bolt. |