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Changing Earth Ch. 1 Review Who am I? I’m an area of volcanic activity that develops above rising plumes of magma. Hot spot.

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Presentation on theme: "Changing Earth Ch. 1 Review Who am I? I’m an area of volcanic activity that develops above rising plumes of magma. Hot spot."— Presentation transcript:

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2 Changing Earth Ch. 1 Review Who am I?

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

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

5 I’m one plate sinking beneath another. Subduction

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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


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