The breaking apart of Rocks!
Weathering is the breaking apart of rocks. Water can also break down minerals which make up rocks. Water runs through the river and makes rocks round. Weathering is also very very slow. Weathering can make cool shape on the rocks. For example if you have ever been in a cave you will see it is wet. The water makes the cool shapes in the cave. But you have to be careful you do not slip. Agents of weathering are water, wind, ice, and plants. Rain, rivers, and streams cause erosion. Weathering by water formed carlsbad caverns in New Mexico. If you look at a cliff you might see a plant growing out of a crack in the cliff.