Dust is like very very very tiny pieces of things that float around in the air. Imagine little pieces of dirt, skin, or hair that are too small for us to see with our eyes alone. These tiny pieces can come from lots of places like outside when it is windy, or even inside our homes.
When we move around, we can create dust too! Like when we walk on carpet or pick up a stuffed animal, tiny bits can be released into the air. These bits can settle on surfaces like tables and shelves, and sometimes create a thin layer that we can see.
Sometimes these little bits can be a problem, especially if we breathe them in. That's why it's important to keep our homes clean and dust-free. We can use cleaning supplies like vacuums, brooms or dust cloths to remove dust from our homes. And if we're outside, wearing a mask can help us avoid breathing it in.
So, dust is like lots of tiny things that float around in the air or settle on surfaces, and it's important to keep our homes clean to avoid breathing it in.