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How does a microwave heat up food?

Have you ever wondered how a microwave heats up food? Why does food inside a microwave get hot without using any flames? The answer is a bit hard to understand, so we’ll explain it step by step. First, your food has a lot of water inside it. Water is made up of very tiny particles called water molecules.

When water is cold, the water molecules move slowly. When water is heated, the water molecules smash into each other. The energy produced by the collisions creates heat. So if you want to heat up food, you need to agitate the water molecules inside the food. This is where the microwave comes in. A microwave oven emits special electric and magnetic waves called microwaves. When these microwaves pass through the food, they cause the water molecules in the food to crash into each other. And that is why the food heats up.