Across
- 2. waves earthquakes produce these waves
- 4. dark fine-grained rock
- 9. thickest layer
- 10. most mass
- 11. outermost layer
- 13. most water in the hydrosphere is
- 14. crust crust that forms the continents
- 17. four main systems are ______ of one another
- 18. heat transfer when you touch a hot object
- 19. earth's highest mountains
- 20. rocks are melted and flow here
- 21. light colored rock that has coarse grains
- 22. different layers have different _____
- 24. samples direct evidence provided by
- 25. results as liquid movement in outer core
- 27. currents heat transfer within a fluid
- 29. shape land's surface by building landmasses
- 31. glaciers are part of
Down
- 1. all living things
- 3. tectonics theory that earth's plates move very slowly
- 5. layer of gasses surround Earth
- 6. main elements in earth's crust
- 7. erosion and weathering are examples
- 8. water vapor is water in what form
- 12. transfer of energy through empty space
- 15. crust and upper mantle
- 16. cover 75% of Earth's surface
- 23. ability to do work
- 26. group of parts that work together as a whole
- 28. earth's core is mostly this metal
- 30. core made of liquid iron and nickel, produces magnetic field