Weathering

4. the process that breaks down rocks.
6. breaking down rocks by changing its form.
8. original rock under that is underneath an area.
11. when roots get into cracks and make crack bigger crack and is very common.
12. frost wedging, water gets into cracks and freezes. The expanding strength of freezing water is greater than any rock can stand.
13. weathering by living things.

1. humans and animals break down rocks.
2. Rocks worn down because of friction with other rocks or other forces.
3. weathering- mechanical weathering breaking down the bedrock- into smaller pieces without changing what it is.
5. water carries pieces of rock, the pieces knock out other pieces in surrounding rocks. Waves crashing into each other also breaks up rocks.
7. little pieces of rock carried away by wind knocks out other pieces of rock.
9. The bedrock- breaks into flat sheets parallel to the surface because of the expansion of the rock when the pressure of overlaying rock is removed.
10. the force of wind or water pulls out any loose pieces of rock. Usually in sedimentary rock.