A lightening strike 2 km away creates a sound of thunder by making a shock wave in air from the large energy it deposits so quickly that the air cannot move out of the way. Pick the two answers that are correct if f the speed of sound is about 340 meters/second in the night air at 20 degrees Celsius. You can find the distance to the strike from the delay: each mile is about 5 seconds The booms are so loud that the shock wave goes nearly at the speed of light and they occur at the same time as the flash The lightning flash comes before the bang by 6 seconds The bang occurs before the flash