| A | B |
|---|
| weathering | The way rocks are broken down into smaller pieces |
| What wears down landforms? | water, wind, moving ice |
| How long does it take for weathering to break down rocks to become soil? | Thousands of years |
| erosion | The movement of weathered rock and soil. |
| What can help hold soil in place? by keeping water from washing rich soil away from farmlands? | plants |
| landform | A natural shape on the earth's surface, which includes both dry land and ocean floors |
| glaciers | A huge block of moving ice found where it is cold and the snow never melts. |
| When glaciers move _________. | They pick up rocks and soil. |
| When glaciers melt _______ | They drop the rocks and soil, which can form hills and ridges. |
| volcano | An opening on Earth's surface from which lava flows. |
