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What is the primary physical process that causes the explosive sound of thunder, following a lightning strike?

A. The collision of high-speed rain and hail particles within the storm system.

B. A vacuum created by the negative charge of the storm being rapidly filled by surrounding air.

C. The instantaneous, extreme heating of the air in the lightning channel, generating a powerful shockwave.

D. The physical vibration of the cloud mass due to severe atmospheric pressure changes.

💡 Explanation:

Lightning superheats the air along its path to temperatures often exceeding 50,000 degrees Fahrenheit (28,000 degrees Celsius). This extreme, instantaneous heating causes the air to expand explosively, creating a shockwave we hear as thunder.

📚 Topics: Geography Natural Phenomena

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