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plate boundries
vocab
Question | Answer |
---|---|
convection currents | transfers energy in the mantle |
divergent boundaries | two crusts diverge both move outward |
transform boundaries | plates slip sideways by each other creating earthquakes- the crust in not created or destroyed |
converging boundary cont-cont | continental crusts collide and fold upwards to form a folding mountain |
converging boundary cont-ocean | ocean crust pushes below the continental crust volcanoes form |
subduction zones | one of the crust gets |
Ring of Fire | long chain of volcanoes that surround the pacific ocean |
converging ocn-ocn | the older oceanic crust goes under the newer |
oceanic crust | highest part in the oceanic plate |
Himalayan | are formed in the cont-cont convergent |
plate tectonics | the theory that the earths outer crust is divided into several plates |
continental crust | thick part of the earths crust and usually older than the oceanic |
mid ocean ridge | oceanic crust divides and magma spews up and cools |
sea floor spreading | oceanic crust divides and magma spews up and cools |
volcano | a dome or mountain with a vent that leads to magma that is under the crust |
rift valley | formed when two continental crust divide |
San Andres fault | two plates slide past each other creating earthquakes |
earthquakes | vibrations in the earth that have 3 waves and can do a lot of damage |