Question

HELP MY GRADES-
question: If you see a lightning flash, and you hear the thunderclap one second later, how far away is that lightning?

Answer 1

If you count the number of seconds between the flash of lightning and the sound of thunder, and then divide by 5, you'll get the distance in miles to the lightning: 5 seconds = 1 mile, 15 seconds = 3 miles, 0 seconds = very close. Keep in mind that you should be in a safe place while counting.