each time lightiing flashes there is a ioud noise.it may be a big crasp.it maybe just a long rumble.when you make a spark you hear a noise,too.it sounds like a snap.a spark jumping through the air makes a noise.we call this thun-der.sometimes you see lihtning and hear thunder aimost togerther.other time, the lightning flasher,but everything is puiet.you wait.then, from far away, you hear the rumbling thunder.the farther you are from the storm the longer you must wait to hear the thunder.sound traveis one mile in five seconds but light travels very much faster.you can see the light almost as soon as it flasher.