Across
- 1. the very center of the earth
- 4. a place in the earth where magma can erupt as lava
- 7. matter that settles at the bottom of a liquid
- 8. the shaking of the earth's crust
- 10. the place where a river begins, usually high in the mountains
- 12. to plant different crops from year to year
- 15. hot, liquid rock found in the earth's mantle
- 18. large mass of moving rock or soil from a mountain or cliff
- 19. precipitation on land that eventually trickles into streams
- 20. be a good one by recycling, repurposing, conserving water etc.
- 22. resources like water, the right kind of air, and good soil are examples
- 23. the coldest parts of the earth
Down
- 1. the outer layer of the earth
- 2. there are seven on earth
- 3. the top layer of the earth's crust
- 5. soil in which plants grow well
- 6. a natural formation of rock or soil on the earth's surface
- 9. the loss of topsoil by water and wind
- 11. a new landform made by soil deposited at the end of a river
- 13. covers 70% of the earth's surface
- 14. material in the soil that is made from living things that are broken down or decayed
- 16. a substance in the earth that has never been alive
- 17. a ditch formed where soil washed away
- 21. the imaginary line around the earth halfway between the North and South Poles