* Physical weathering: This breaks rocks into smaller pieces without changing their chemical composition. Think of it like cracking a rock in half. Examples include:
* Frost wedging: Water freezes and expands, putting pressure on rocks and breaking them.
* Abrasion: Rocks rub against each other, grinding them down.
* Chemical weathering: This changes the chemical makeup of rocks. Imagine a rock dissolving in acid. Examples include:
* Acid rain: Acidic rainwater dissolves some minerals in rocks.
* Oxidation: Iron in rocks reacts with oxygen, creating rust and weakening the rock.
So, the end result of weathering is:
* Sediment: These are the small, broken down pieces of rock. They can be sand, gravel, clay, or even dust.
* Soil: Weathering, along with the decomposition of organic matter, forms soil.
* New minerals: Chemical weathering can form new minerals, like clay, which is important for soil formation.
It's important to remember that weathering is a continuous process. Over time, even the hardest rocks will be broken down and changed by the forces of nature.
