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Answer:
The loud thunder that follows the lightning bolt is commonly said to come from the bolt itself. However, the grumbles and growls we hear in thunderstorms actually come from the rapid expansion of the air surrounding the lightning bolt. ... As the heated air expands, the pressure drops, the air cools, and it contracts.
Explanation:
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The grumbles and growls we hear in thunderstorms actually come from the rapid expansion of the air surrounding the lightning bolt, As the heated air expands, the pressure drops, the air cools, and it contracts.