You see a lightning flash and half a second later hear a loud blast of thunder.How far away did the lightning hit?
A)about a mile
B)half a mile
C)a tenth of a mile
D)none of the above

Question

Quizplus · Accepted Answer

Sound travels at approximately 1,125 feet per second (340 meters per second) in air at room temperature. If you count the number of seconds between the lightning flash and the sound of thunder, and divide by two, you can estimate the distance between you and the lightning. Half a second is equal to 562.5 feet (171 meters), which is a tenth of a mile.

You See a Lightning Flash and Half a Second Later