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ES Plate tectonics
| Term | Definition |
|---|---|
| Plate Tectonics | theory that the earths' lithosphere is broken up into two pieces |
| Mid-Ocean Ridge | Mountain Range of volcanoes at the bottom of the ocean |
| Trench | A long steep narrow and deep depression in the sea floor |
| Magnetic Reversal | When the earths magnetic poles flip flop is polarity |
| Asthenosphere | Layer of the earth that has slow plastic like movement |
| Subduction | The process of a denser plate sinking under another plate |
| Continental | The type of crust that is the thickest |
| Transform | Types of plate boundary where two plates slide past each other |
| Divergent | Types of plate boundary where two plates separate apart |
| Hot Spot | A rising bubble of magma from the lower mantle that remains stationary for millions of years |
| Convergent | Type of plate boundary where two plates collide and form mountains |
| Orogeny | The event of building mountains when plates collide |
| Convection Currents | Circular movement of rising and sinking with in the plastic mantle which drags or pulls the plates |
| Oceanic | The type of crust that is densest |
| What is the basic concept of Plate Tectonics? | Solid plates that move over the mantle |
| Which layer of the Earth makes up the plates? | Lithosphere |
| On Which layer of the Earth are the Tectonic plates "Floating" on? | Asthenosphere |
| State the 3 ways crustal plates can interact at the Plate Boundaries? | Subduction, divergent, convergent |
| State 3 major crustal events that occur where crustal plates interact? | Trench, transform and orogeny |
| Types of boundaries where 2 plates collide into each other? | Convergent |
| Type of boundary where plates move apart and magma rises from below to fill in the separation | Divergent |
| Type of boundary where 2 crustal plates slide past each other | transform |
| The mountain range at the bottom of the ocean, composed mostly of volcanoes and lave flows; forms at zones of diverging plates | Mid Ocean Ridge |
| A very steep, long, and narrow depression of the sea floor produced by the bending down of a subduction plate along a convergent zone | Ocean Trench |
| Why type of boundary produces a mid- oceanic ridge? | Convergent |
| Which type of boundary produces an ocean trench? | Divergent |
| Which type of boundary produces volcanic island arcs? | Convergent |
| Which type of boundary produces shallow earthquakes and little to no volcanic activity? | Transform |
| What forms when two continents converge and the two plates bunch up together? | Mountain |
| What is the driving force behind the theory of plate tectonics | Theory lithosphere is broken up into two pieces |
Created by:
sjjwhite
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