ELI5: Explain Like I'm 5

Reverse weathering

Okay kiddo, so you know how sometimes rocks can break down into smaller pieces because of things like wind, water, and plants? Well, sometimes these smaller pieces of rocks can come together and form bigger rocks again. This is called reverse weathering. It's like when you take apart a puzzle and then put it back together again. The puzzle pieces are like the smaller rocks and the finished puzzle is like the bigger rock. Pretty cool, huh?