Across
- 2. small mound of land
- 4. a mix of tiny rocks and bits of dead plants and animals
- 10. a mineral in a pencil
- 11. a mix of soil and rotting parts of plants and animals
- 13. an opening in Earth's crust
- 15. the outer layer of Earth
- 16. the shape of a ball
- 19. anything that makes water, air, or land dirty
- 20. cut back on how much you use something
- 21. a material from Earth that people use in daily life
- 25. when rocks and soil move from a higher to lower ground
- 26. used to break rocks
- 28. the middle layer of Earth
- 29. a mineral in magnets
- 30. a large deep body of salt water
- 31. use something again
Down
- 1. a mineral in toothpaste
- 3. low land between mountains or hills
- 5. break down into smaller pieces
- 6. a nonliving part of Earth
- 7. a shake in Earth's crust
- 8. area that is flat and wide
- 9. make new items out of old ones
- 12. a mineral used in jewelry
- 14. one of the different shapes of Earth's land
- 17. a high area of land
- 18. water that is not salty
- 22. the center of Earth
- 23. water that flows over land and can not easily soak into the ground
- 24. a model of Earth
- 27. bits of rocks and soil that plants and animals need