| A | B |
| weathering | process of breaking down rocks into smaller particles |
| physical weathering | changes caused by natural events |
| erosion | wearing away of the soil by water or wind |
| canyon | deep gorge in the earth caused by river action |
| sediments | deposits dropped by the agents of erosion |
| deposition | dropping of sediments by the agents of erosion |
| delta | sediments of weathered rock that form a fan shape at the end of rivers. |
| glaciers | ice formations which move as they melt to cause new land formations |
| sand dunes | sand formations that can move from one shape to another if not anchored by plants |
| wind break | way of preventing erosion with use of plants or fences. |