| A | B |
|---|
| Plate Tectonics | The theory which states the earth's crust is broken into large pieces that are constantly moving |
| continental drift | Wegener's theory |
| earthquake | vibrations traveling through the earth's crust |
| outer core | where s-waves stop |
| Moho | boundary between the crust and the mantle |
| S waves | can't travel through a liquid |
| lithosphere | this is where the plates are |
| divergent boundary | plates moving away |
| mantle | the largest of the earth's interior layers |
| oceanic crust | is always the type subducted |
| P waves | they are really fast! |
| asthenosphere | it's where the plastic is! |
| convergent boundary | plates that come together |
| volcano | anywhere magma reaches the earth's surface |
| inner core | this is the innermost layer that is the most dense |
| caldera | forms when a volcano erupts and completely collapses |
| seismic waves | given off during an earthquake |
| continental crust | never subducts |
| Pangaea | super-continent |
| mid-ocean ridge | spreading center in the ocean |
| trench | found in a subduction zone |
| Panthalassa | super-ocean |
| subduction | when one plate dives uner another |
| rift valley | runs along a ridge where the spreading occurs |
| plates | pieces of crust |
| seafloor spreading | what Wegner couldn't figure out |
| basalt | type of rock that makes up the ocean crust |
| crust | thinnest layer of the Earth |
| crust | outermost layer of the Earth |
| granite | type of rock that makes up the continental crust |
| mantle | layer of the Earth that has 3 layers |
| asthenosphere | the layer of the Earth that contains convection currents that control the movement of the plates |
| lithosphere | layer of the Earth that includes the crust and upper mantle |
| inner core | layer of the Earth made of solid nickel and iron |
| outer core | made of liquid nickel and iron |
| conduction | the transfer of heat from a SOLID to a solid, liquid, or gas |
| convection | the transfer of heat from a LIQUID OR GAS to a solid, liquid, or gas |
| radiation | the transfer of heat without any molecules |
| divergent boundaries | hot rising portion of convection currents creates |
| convergent boundaries | cool sinking portion of convection currents |
| convergent boundaries | type of boundary that encompasses subduction and collisions |
| deep ocean trench | landform found near subduction boundaries |
| volcanic mountain | landform found near subduction boundaries |
| rift valley | landform found near continent to continent divergent boundaries |
| mid-ocean ridges | landforms found near ocean to ocean divergent boundaries |
| volcanic islands | landforms found near ocean to continent convergent boundaries |
| mountain ranges | landforms found near continent to continent convergent boundaries |
| transform boundaries | 2 plates that slide past each other |
| convergent boundaries | 2 plates that move toward each other |
| divergent boundaries | 2 plates that move away from each other |
| Alfred Wegener | proposed the Theory of Continental Drift |
| continental crust | less dense than oceanic crust |
| cool | Liquids that contract and sink |
| hot | Liquides that expand and rise |
| young rock | found near a divergent boundary |
| old rock | found near a subduction zone |
