How Does a Fridge Keep Things Cold for So Long?

Imagine your fridge is like a superhero who constantly fights the heat inside. It uses something called cold energy to keep things cool. When you open the door, warm air comes in, but the fridge quickly kicks it out again so your food stays fresh and chilly.

The fridge has a special machine that works like this: it takes cold from one side of the fridge and moves it to the other side. This process is called refrigeration. Just like how you can keep ice cream cool by putting it in the freezer, your fridge does something similar on a bigger scale.

Even if you leave the door open for a while, the fridge keeps working hard to bring everything back to cold. It's like having a little cold robot inside who never stops fighting the heat.