ELI5: Explain Like I'm 5

Work (thermodynamics)

Okay, kiddo. Work is when you make something happen by using energy. Think about how you pedal your bike to make it move. When you do that, you're using energy to make the bike go. That's work! In science, work is when you use energy to move something a certain distance.

Let's talk about thermodynamics, which is about heat and energy. You know how when you touch something really hot or really cold, it feels different? Well, that's because of heat. Thermodynamics is about studying how heat moves around and how energy changes from one form to another.

Now, sometimes when objects get hot, they expand, which means they get bigger. And sometimes when objects get cold, they contract, which means they get smaller. This changing size can cause work to happen too! For example, if you put a balloon in the freezer, it would get smaller because it's getting colder - that's work happening!

So, basically, work in thermodynamics is when energy is used to move something a certain distance or cause a change, like expanding or contracting. It's all about how energy and heat work together to make things happen!