Question

what cuases the sound of thunder in sky​

Answer 1

Answer:

The electric sparks of lightning heat the nearby air in the sky to very high temperatures. Due to this heat, the air in the sky expands rapidly and produces a loud sound which we call thunder. Lightning usually occurs within a cloud in the sky.

Answer 2

Thunder is caused by the rapid expansion of the air surrounding the path of a lightning bolt. ... The heat from the electricity of this return stroke raises the temperature of the surrounding air to around 27,000 C° (48,632 F°).

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