Chapter 2
Plate Tectonics
Terms
undefined, object
copy deck
- Transform
- fractures in the crust where plates slide laterally past each other
- Oceanic-Oceanic
- volcanoes result from rising magma produced by the partial melting of the subducting plate
- Continental-Continental
- huge mountain ranges are formed due to collision
- Slab-Pull
- the slab is cold and dense and pulls the plate
- Hot Spot
- location on Earth's surface where a stationary column of magma, originating deep within the earth, has risen to the surface and formed a volcano
- Ridge-Push
- rising magma pushes the ridges up and gravity pushes the ocean floor toward the trench
- Pangaea
- a theory created in 1915 by Alfred Wegener
- Plate Tectonics
- a theory that the earth's surface is made up of large rigid plates that are continuously moving
- Seafloor Spreading
- the seafloor separates at oceanic ridges, where new crust is formed by upwelling magma
- Oceanic-Continental
- partial melting of the oceanic plate forms a chain of andesite volcanoes
- Divergent
- spreading apart