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Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen, why? - CBSE Class 9 - Science

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Question

Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen, why?

Solution

The speed of sound (344 m/s) is less than the speed of light (3 x 108 m/s). Sound of thunder takes more time to reach the Earth as compared to light. Hence, a flash is seen before we hear a thunder.

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Solution Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen, why? Concept: Speed of Sound in Different Media.
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