| A | B |
|---|
| physical weathering | the mechanical breakdown of rock |
| chemical weathering | change in chemical composition |
| erosion | transportation of weathered material (sediments) |
| deposition | the settling out or release of sediments by an agent of erosion |
| sediment | particles of weathered rock ranging in size |
| bedrock | the solid layer of rock that extends into the earth |
| colloids | tiny particles suspended in a liquid indefinitely |
| graded bedding | layers of sediment changing from coarse at the bottom to fine at the top |
| soil horizons | layers within the soil- a mature soil has 3 of these |
| soil profile | a side view of the horizons within a soil |
| meander | a curve in a stream |
| topsoil | soil horizon containing humus |
| subsoil | soil horizon leached from topsoil |
| leaching | process in which groundwater carries dissolved minerals deeper into the soil |
| delta | a depositional feature forming at the mouth of a river |
| humus | organic remains that are in the soil |
| weathering | the breakdown of rock due to physical or chemical changes |
| transported soil | soil eroded and deposited away from its parent bedrock |
| residual soil | soil that remains on top of the bedrock from which it forms |
| glacier | a large mass of moving ice |
| U-shaped valley | characteristic of landscape formed by a glacier |
