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1. Plate Boundaries

1.1. Divergent Plate Boundary

1.1.1. rift valley

1.1.2. ocean ridges

1.1.3. spreading or splitting apart

1.2. Convergent Plate Boundaries

1.2.1. Toward each other

1.2.2. Plates Collide

1.2.3. Trenches

1.2.4. Underwater Earthquakes

1.2.5. Volcanic arc

1.3. Transform Fault Boundary

1.3.1. Slide or grind

2. Seismic Wave

2.1. Body Waves

2.1.1. P wave primary wave solid liquid gas compressional first longitudinal

2.1.2. S wave secondary wave shear wave slower transverse waves back and forth perpindicular solid gas latitudinal

2.2. Surface wave

2.2.1. Love waves side to side Horizontal motion faster most damage

2.2.2. Rayleigh waves rolls up and down earthquakes

3. Earth's Interior

3.1. Crust

3.1.1. Thinnest

3.1.2. outermost layer

3.1.3. continental crust silicon oxygen Aluminum calcium sodium potassium granite

3.1.4. oceanic Crust thicker ocean floor basalt heavier

3.2. Mantle

3.2.1. Silicate rocks

3.2.2. S wave

3.2.3. P wave

3.2.4. Silicon

3.2.5. Oxygen

3.2.6. iron

3.2.7. Magnesium

3.2.8. denser

3.3. Core

3.3.1. Inner Core Iron Nickel 2250 km thick

3.3.2. Outer Core very high temperature iron nickel melt molten/liquid

4. Earth's Mechanism

4.1. Continental Drift

4.1.1. Alfred Wegener Pangea laurasia Gondwanaland German Meteorologist Continental Jigsaw Puzzle shapes Evidence from Fossils Glossopteris Mesosaurus Sea Floor Spreading Coal deposits