Cathodic protection

Cathodic protection is like giving a special power to metal so it doesn't get hurt by its enemies. Just like superheroes have powers to fight against bad guys, cathodic protection helps metal fight against harm caused by water and other things that can make it rust and break.

When metal is put underground or in water, it can get damaged by the tiny creatures that live in water or by the wetness of the ground. Scientists or engineers use cathodic protection to stop this from happening.

They attach a special wire to the metal and connect it to another piece of metal that is stronger than the original metal. This special metal piece is usually made of zinc or aluminum. When the two metals touch each other, it creates a special kind of electric power that shields the metal from harm.

It's like when you hold your mom's hand when you cross the road. You feel safe because your mom is the stronger one who can protect you from harm. This is pretty much how cathodic protection works for metal.