| A | B |
|---|
| chemical weathering | The process of weathering that breaks down rock through chemical process. The mineral composition changes. |
| Ice wedging | Water freezes and thaws |
| Abrasion | Mechanical weathering when rock is worn away by the grinding action of other rock particles. |
| Oxidation | A chemical change that causes iron rich rocks to become soft and a reddish brown color. |
| Creation of soil | Developed over thousands of years |
| Bedrock | soil formation begins in this layer |
| Permeable | A material that has spaces or pores in it, allowing water to pass through. Permeable rock weather easily because of the small airspaces. |
| Hot and wet climate | Weathering takes place rapidly |
| Humus | high fertility and earthworms add their waste to help create it |
| Living Organisms | Mix the soil and make humus. Earthworms help mix the soil |
| Soil | Helps plants grow |
| Decomposers | Helpt to break down and digest the remains of dead organisms |
| Mechanical weathering | a type of weathering in which rock is physically broken into smaller pieces but the composition of the rock is the same. The growth of plant roots and animal activity are a form is this type of weathering. |
| Loam | Almost equal amount of silt, sand and clay. Found in Horizon A (rich in humus) |
| Granite | Will last a long time when there is not much freezing and thawing |
| Soil Size | Will determine how much air and water the soil can hold |
