| A | B |
|---|
| weathering | the chemical and physical processes that break down rock at Earth's surface |
| erosion | the process by which water, ice, wind or gravity moves fragments of rock and soil |
| mechanical weathering | the type of weathering in which rock is physically broken into smaller pieces |
| abrasion | the grinding away of rock by other rock particles carried in water, ice, or wind |
| ice wedging | process that splits rock when water seeps into cracks, then freezes and expands |
| chemical weathering | the process that breaks down rock through chemical changes |
| soil | the loose, weathered material on Earth's surface in which plants can grow |
| Fine sediments | formed by a slow running river that drops fine particles |
| gravel | large particles that settle first in a flowing river |
