Light is faster than sound.
You don't see thunder. You hear thunder. You hear thunder after seeing the lightning because light travels faster than sound. The further the storm away is, the bigger the time between when you see the lightning and hear the thunder.
You see lightning before you hear it because light moves faster than sound. Thunder comes from the lightning. You can't hear it until the sound waves reach you.
For the same reason you see lightning before you hear thunder, Light travels faster than sound.
Because light travels faster than sound
You see lightning first because light travels faster then sound.Also, you don't see thunder - you hear it.
You see lighting and hear thunder.
Light travels more faster than sound that is the reason why you can SEE lightning before you HEAR thunder
If you see lightning but don't hear thunder, it means the lightning is far away. The speed of light is much faster than the speed of sound, so you usually see lightning before you hear the associated thunder.
Sound moves much slower than light, so you hear the boom of thunder after the flash.
You see the lightening, and hear the thunder.
If you hear the thunder almost at the same time as the lightning flash - the storm is directly overhead. Usually - the sound of thunder arrives a few seconds after the lightning, because light travels much faster than sound.
There is a delay between seeing the lightning and hearing the thunder because the speed of light (lightning) is much faster than the speed of sound (thunder). Thus, you SEE lightning first, and then you HEAR thunder later.