Explain why we always hear the thunder a little after we see the flash of lightning. Share with your friends Share 0 Neetesh Pandey answered this We hear thunder a little after we see flash of lightning because speed of light is more than speed of sound. 0 View Full Answer Anwesha Ghosh answered this Light's speed in air is 3?10^8 m/s^2...while sound speed in air is 332m/s..so light speed is more than sound..so the lightning and thunder takes place simultaneously but we see the lightning at first...then thunderis heard by us -1