Electrostatics In Lightning Rods
The "Shocking" Truth
How it was developed, and what it is...
Step 2: Negative charges on the bottom of the cloud induce a positive charge on the ground below the cloud by repelling negative charges in the ground...
Step 3: When the bottom of the cloud gains enough electrons, the attraction of the positive charges below causes electrons to move closer to the ground
Step 4: When the cloud gets close enough to the ground, they attract positive particles from the ground and spurt upward, completing the connection.
All of this causes the spark you see called "lightning"
How Lightning Rods work
Ryerson, Mcgrawl Hill. On Science 9. N.p.: n.p., n.d. Print.