Question

How lightning occurs?

Answer 1

It occurs when 2big clouds with electric charge rub eachother and the air between them is a bad conductor so they produce light with high force and this is when lighting occurs

Answer 2

Lightning is a sudden electrostatic discharge that occurs during a thunder storm. This discharge occurs between electrically charged regions of a cloud , between two clouds  or between a cloud and the ground . The charged regions in the atmosphere temporarily equalize themselves through this discharge referred to as a strike if it hits an object on the ground, and a flash, if it occurs within a cloud. Lightning causes light in the form of plasma, and sound in the form of thunder. Lightning may be seen and not heard when it occurs at a distance too great for the sound to carry as far as the light from the strike or flash.