Across
- 1. dark, organic material that remains when organisms decay
- 4. the rapid movement of a large amount of mud
- 7. constructing steplike ridges that follow the contours of a hill, preventing water from flowing downhill
- 11. the removal of topsoil by continuous rainfall or wind in dry periods
- 14. mechanical weathering due to the grinding against other rocks or sand particles
- 15. chemical weathering due to a metallic element reacting with oxygen
- 21. a large mass of loose rock and soil falling down a slope
- 23. soil with particles too small to see or feel
- 26. chemical weathering due to a compound converting to CO3
- 27. a type of weathering done by physical means
- 30. planting two crops in alternating rows
Down
- 2. a large block of soil or rock that slides downhill as a single piece
- 3. a rock falling from a cliff or mountain
- 5. chemical weathering due to pollution causing high pH levels in rainfall
- 6. weathering at different rates due to the different properties of rocks
- 8. solid, unweathered rock
- 9. chemical weathering due to organisms producing weak acids
- 10. mechanical weathering due to the physical action of living organisms
- 12. the physical or chemical decomposition of rock material
- 13. soil with particles that can be both seen and felt
- 16. mechanical weathering due to the repeated freezing and thawing of rock
- 17. plowing pattern that follows the curves of the land
- 18. the slow flow of wet soil sliding over frozen subsoil
- 19. the improper plowing of furrows causing soil to easily wash away
- 20. planting different types of crops in a field each year
- 22. chemical weathering due to water and another substance combining to make 2+ new substances
- 24. a layer or weathered rock fragments
- 25. a type of weathering done by chemical reaction
- 28. the slowest form of soil movement; moves the most soil overall
- 29. a loose mixture of rock fragments and organic material that can support growth of vegitation
- 30. soil with particles that can be felt, but not seen