Explain why we always hear thunder a little after we see the flash of lightning

Dear student,
Please find below the solution to the asked query

We see lightening much before we hear the sound of thunder because light travels much faster than the sound. The speed of sound is only about 340 m/s while as the speed of light is about ‎299792458 m/s. 
 
Hope this information will clear your doubts about why we see lightning much before the thunder.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.
 

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