1. Changing Earth Ch. 1 Review
Who am I?

2. I’m an area of volcanic activity that develops above rising plumes of magma.
Hot spot

3. I’m the huge underwater mountain ranges that are present in every ocean and circle the earth.
mid-ocean ridges

4. I’m one plate sinking beneath another.
Subduction

5. I state that Earth’s lithosphere is broken into huge, moving slabs of rock driven by motions in the mantle.
Theory of plate tectonics

6. I’m the name that Alfred Wegener gave to the huge supercontinent that he proposed had once existed.
Pangaea

7. I’m the place where older crust is destroyed because two plates converge, or push together
Convergent boundary

8. I occur where two plates move past each other in opposite directions.
Transform boundary

9. I’m the hypothesis that proposed that Earth’s continents were once joined in a single landmass and then gradually moved apart
Continental drift

10. I’m the layer of hotter, softer rock in the upper mantle.
Asthenosphere

11. I’m a plate with oceanic crust sinking under a plate with continental crust.
Oceanic -continental subduction

12. I’m the layer of liquid metals that surrounds the inner core.
Outer core

13. I’m the motion created when heated material continually rises, cools, and sinks.
Convection current

14. I’m the thin layer of rock that surrounds the Earth.
Crust

15. I’m the gap that forms as tectonic plates move apart
Rift valley

16. I am the layer at the center of the Earth.
Inner core

17. I am the three pieces of evidence that proved Wegener’s Continental Drift theory to be correct.
Fossils, climate and geography

18. I am the main driving force of plate tectonics.
convection in the astenosphere

19. I am the part of the Earth that makes up a tectonic plate
crust and upper most mantle

20. I am a boundary that is also known as a spreading center.
Divergent boundary

21. I am the pattern formed by magnetic minerals at a mid-ocean ridge.
Same on either side of the ridge

22. I was formed after a continental-continental collision of the African and European plates.
The Alps

23. Hint:
How do the studies of the ocean floor- and everything that is happening there- help explain the theory of plate tectonics?