What causes lightning? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12 Students CBSE Exams.

What causes lightning?

A Cloud has droplets of water which have a positive electrical charge at the top of the cloud and a negative charge at the bottom. Sometimes the negative charge comes near an attracting positive charge on the earth or another cloud. This releases electrical energy in a flash of light. Thunder also occurs at the same time but we see the lightning before we hear the thunder as light travels faster than sound.