Across
- 2. How do scientists measure earthquakes?
- 3. A deep valley that forms where two plates move apart?
- 8. What is the liquid layer of Earth's core?
- 9. Two or more lithosphere plates collide
- 10. An intense shaking of Earth's surface
- 11. Drag plates away from mid-ocean ridges?
- 12. Giant pieces of rock that float on top of the mantle?
- 16. The plates that are below the ocean?
- 18. What is the lower strong part of the mantle?
- 20. What element makes up most of Earth's core?
Down
- 1. A constantly moving, semi-liquid layer called...
- 4. What is the innermost layer of the Earth?
- 5. If two tectonic plate's collide, what is the process called...
- 6. What explains the age and magnetic patterns of seafloor rocks
- 7. Plants rip apart at a divergent plate boundary?
- 13. What extends from below the mantle to the center of Earth?
- 14. What is located between the core and the crust?
- 15. When two plates move away from each other, this is called...
- 17. What is the outermost layer of the Earth?
- 19. What is made up primarily of silicon and magnesium?