Across
- 1. this type of weathering breaks down rocks using acid rain
- 2. a mix of humus, sand, silt, clay, gravel, and/or pebbles
- 6. showing many layers or horizons of soil
- 7. water getting into cracks, which freezes and expands to break apart rocks
- 9. the material that holds particles together to make stone
- 10. grinding and bumping of rocks
- 12. bits of dead plant and animal parts in soil
- 14. a natural feature of earth’s surface
- 16. earth materials such as sand, rock, pebbles, clay, etc.
- 17. a type of rock made from sediments packed together
- 18. a v-shaped landform eroded by a river
- 21. plants that grow in between rocks until they break apart
- 23. the pure substance(s) that rock is made out of
- 24. using pressure to decrease the size and number of spaces between particles (to create sedimentary rocks like sandstone)
- 27. the vertical distance of a land’s surface compared to sea level
- 28. the rock that forms earth’s crust
- 29. a person who studies the earth’s surface
Down
- 1. lining up rocks at the Grand Canyon. Also, to find a relationship between two or more things
- 3. the thickness of the different rocks or weathered materials stacked on top of each other
- 4. water stored below earth’s surface
- 5. separating rocks based on their shape and size
- 8. the breaking down of sediments or rocks
- 11. a flat black rock found at the Grand Canyon
- 13. this type of weathering breaks down rocks without changing what the rock is made up of
- 15. a type of rock made from a mineral called calcite
- 19. when nitrogen and sulfur dissolves in raindrops
- 20. moving or pushing sediments by water or wind
- 22. a rock that forms when layers of sediments get stuck together
- 24. the mineral that is found in limestone and in chalk
- 25. a representation or replica of a system or process
- 26. dropping off sediments at their final location