How Clouds Create Lightning
- - - - - - - - - - - - - -
Strong negative charges - -
build under clouds -
- Negatively charged particles,
- called the stepped leader, move
- toward the ground
When the stepped leader gets +
close to the ground, a positively +
charged stream travels up to meet +
the negative creating a strong +
electrical current - lightning! +
+ Strong positive charge builds up
+ on the ground below the cloud.
+ It stays under the cloud as it moves.
+ + + + + + + + + + + +