Weathering is the process of breaking rock down into smaller and smaller pieces.

Once the rock has been broken down and weakened by weathering it is ready for erosion.

Erosion is the process of moving these broken down sediments to another place by water, wind, ice, or gravity.

Check out this website to learn more: https://www.generationgenius.com/weathering-erosion-and-deposition-for-kids/