Well, a plasma torch is like a really hot blowtorch, but instead of using fire and gas, it uses an electric charge to heat gas until it becomes plasma, which is even hotter than fire.
You know how lightning comes from the sky on a stormy day? That's kind of how plasma is made - by giving electricity to a gas like air or argon. When you turn on the torch, electricity flows through the gas and turns it into plasma.
The plasma is so hot, it can melt metal, cut through thick materials, and even turn rocks into molten lava! It's used in factories to cut metal into specific shapes, and scientists use it to study plasma and figure out how it works.
So in short, a plasma torch is a really fancy tool that uses electricity to turn gas into super hot plasma, which is used to cut through tough materials like metal.