Mechanical Weathering: Water gets into a rock with tiny cracks and freezes, it expands, making the cracks bigger., As the tree's roots grow, they push into the cracks in the rock., Sand particles rubbing against rocks while going downstream in a river., Water bottle expanding and breaking after being left in the freezer., Chemical Weathering: A piece of iron was left in the rain and over time, the iron can start to rust, turning a reddish-brown color., Dropping a piece of chalk into water and it dissolves., Rocks dissolving in acidic water ,

Weathering

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