1. Main ??? Plates converge Plates move Continents change Earth layers 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500

2. A1 Back Layer of earth made of hot, solid metals Answer What is the inner core?

3. A2 Back The Earth’s thickest layer Answer What is the mantle?

4. A3 Back The layer made of liquid metals that surrounds the inner core. Answer What is the outer core?

5. A4 Back Earth’s crust and very top of the mantle together Answer What is the lithosphere?

6. A5 Back A layer of hotter, softer rock in the upper mantle Answer What is the asthenosphere?

7. B1 Back Hypothesis that Earth’s continents were once joined in a single landmass and gradually moved Answer What is continental drift?

8. B2 Back This is what they called all of the continents joined as one huge supercontinent Answer What is Pangaea?

9. B3 Back Huge underwater mountain ranges Answer What are mid-ocean ridges?

10. B4 Back A circulation pattern in which material is heated and rises in one area, then cools and sinks in another Answer What is convection current?

11. B5 Back It states that the Earth’s lithosphere is made up of huge plates that move over the surface of the Earth Answer What is the theory of plate tectonics?

12. C1 Back A deep valley formed as tectonic plates move apart Answer What is a rift valley?

13. C2 Back An area where a column of hot material rises from deep within a planet’s mantle Answer What is a hot spot?

14. C3 Back This occurs where plates push together Answer What is a convergent boundary?

15. C4 Back This is where two plates move apart, most are found in the ocean Answer What is a divergent boundary?

16. C5 Back This occurs where plates scrape past each other Answer What is a transform boundary?

17. D1 Back In the ocean, divergent boundaries are called this Answer What is a spreading center?

18. D2 Back The process by which an oceanic tectonic plate sinks under another plate Answer What is subduction?

19. D3 Back FREE SPACE Answer You get the points

20. D4 Back A boundary along which two plates carrying continental crust push together Answer What is continental-continental collision?

21. D5 Back A boundary along which a plate carrying oceanic crust sinks beneath a plate with continental crust Answer What is oceanic-continental subduction?

22. E1 Back FREE SPACE Answer You get the points!

23. E2 Back A thin layer of cool rock Answer What is the crust?

24. E3 Back Large, moving pieces into which Earth’s lithosphere is broken Answer What are tectonic plates?

25. E4 Back A switch in the direction of Earth’s magnetic field Answer What is magnetic reversal?

26. E5 Back A boundary along which a plate carrying oceanic crust sinks beneath another plate with oceanic crust Answer What is oceanic-oceanic subduction?