Across
- 4. trenches, what are the huge trenches on Earth's seafloor?
- 6. push, what pushes the rest of a plate away from the mid-ocean ridge?
- 9. boundaries, two plates collide they make...
- 11. what is the strong lower past of the Earth's mantle?
- 14. convection, what is the slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior of the Earth's to the surface?
- 15. what is located between the core and the crust?
- 16. what is the outermost rigid layer of Earth?
- 17. spreading, what explains the age and magnetic patterns of sea floor rocks?
- 18. what extends from below the mantle to the center of Earth?
Down
- 1. boundary, a boundary at which two plates move past each other horizontally is called a...
- 2. plates, the lithosphere is divided into...
- 3. tectonics, what describes large scale movements of the Earth's lithosphere?
- 5. what is a layer of weak or soft mantle that is made of rock?
- 7. boundaries, when two plates move away from each other this is called...
- 8. what elements makes up most of the Earth's core?
- 10. core, what is the liquid layer of Earth's core?
- 12. pull, what is the portion of motion of a tectonic plate that can be accounted for by its subduction?
- 13. what is the outermost layer of Earth?
- 18. what is the movement of matter that results from differences in density?