- Mechanical: Weathering caused by physical means, Freezing and thawing of water in cracks will cause rocks to break apart, Rocks falling down a mountain in a landslide, Salt forming holes in rocks, Rocks rubbing against each other and breaking apart, Rocks rubbing against each other and breaking apart, Tree roots breaking apart rocks
- Chemical: Some minerals found in rocks react with oxygen and can change their colour, Acid rain wearing away stone, Carbon breaking down limestone, Weathering that causes chemical reactions, Mosses release acid that dissolve rock, Humans blasting away rock to create a road
- Biological: Weathering caused by living things, Animals burrowing into the ground, Tree roots breaking apart rocks
Parent Tip: Review the logic above to help your child master the concept of rocks and weathering worksheet.