Across
- 3. a layer of rock that is permeable to water
- 8. a black or brown rock that is found in the earth and burned as fuel
- 12. the act of saving, protecting, or using resources wisely
- 13. cannot be replaced by nature easily or quickly
- 14. does not allow liquid or gas to pass through it
- 15. the particles of soil or rock that have been eroded and deposited
- 17. a mixture of gases found below Earth’s surface that is used as fuel
- 18. the dropping off of eroded soil and bits of rock
- 19. to have many small spaces or holes
- 20. a liquid that is found beneath Earth’s surface that is used to form fuels and to make a variety of other products
Down
- 1. can be replaced by nature easily or quickly
- 2. erosion the process by which soil is worn away by wind or rain
- 4. to put through a process that allows things to be reused
- 5. how you get rid of something
- 6. the movement of weathered material from one place to another
- 7. something that people use from nature
- 9. all the living and nonliving things in an area
- 10. the slow process that breaks materials into smaller pieces
- 11. a large sheet of ice that moves slowly across the land
- 16. a type of weathering that occurs when water soaks into a material, freezes, expands, and causes the material to split or break apart
- 19. allows liquid or gas to pass through it