Ch 7 Crossword

123456789101112131415161718192021
Across
  1. 3. two words, process that breaks down rock through chemical changes
  2. 5. decayed organic material in soil
  3. 6. agent of chemical weathering, H2O
  4. 12. the process that breaks down rock and other substances at Earth's surface
  5. 14. material full of tiny, connected air spaces
  6. 15. loose, weathered material on Earth's surface which plants can grow
  7. 16. rock made up of feldspar, quartz, and mica
  8. 18. worm that mixes humus with other materials in the soil
  9. 19. grinding away of rocks by rock particles
  10. 21. two words, agent of chemical weathering, CO2
Down
  1. 1. crumbly, dark brown soil that is a mixture of humus, clay, and other minerals
  2. 2. refers to the average weather conditions in an area
  3. 4. two words, type of weathering in which rock is physically broken into smaller pieces
  4. 7. the movement of rock particles by wind, water, ice, or gravity
  5. 8. organisms that break the remains of dead organism into smaller pieces
  6. 9. loose layer of leaves shed from plants
  7. 10. two words, wedges of ice widen and deepen cracks
  8. 11. solid layer of rock beneath the soil
  9. 13. two words, layer of soil that differs in color and texture from layers above it
  10. 15. B horizon soil, consists of clay and other particles
  11. 17. depends on the size of individual soil particles, can be coarse, grainy, smooth, silky
  12. 20. soil made of clay, sand, and silt
  13. 21. chemical weathering causes granite to become this