Lithosphere

Okay, so remember that the Earth is like a big ball that we all live on. The lithosphere is kind of like the Earth's outer skin or layer. It's the part of the Earth that's solid and hard, like the ground you walk on, the rocks you see outside, and the mountains you might hike on.

Now, the lithosphere isn't just one big, flat layer on the Earth. It's actually made up of pieces called "plates" that fit together like a puzzle. These plates can move around and bump into one another, causing things like earthquakes and volcanic eruptions.

It's important to know that the lithosphere isn't the whole Earth though. Beneath the lithosphere, there's a layer called the mantle which is kind of like a hot, squishy layer of rock that the plates of the lithosphere float on top of.

So, in summary, the lithosphere is like the Earth's solid outer skin made up of puzzle-like plates that move around, and it sits on top of a squishy, hot layer of rock called the mantle.