plate tectojnics Flashcards
(20 cards)
Lithosphere
the rigid outer part of the earth, consisting of the crust and upper mantle.
Asthenosphere
the upper layer of the earth’s mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
Mesosphere
it the coldest part of the amatsphere
Inner Core
it the hottest part of the earth in it the millde of the earth
Outer Core
the earth fluid layer 2,330 kmeter thicc the core right under the earth
Seismic Waves
an elastic wave in the earth produced by an earthquake or other means.
Oceanic Crust
The topmost layer, about 500 metres
Continental Crust
the relatively thick part of the earth’s crust that forms the large landmasses. It is generally older and more complex than the oceanic crust.
Density
the degree of compactness of a substance.
Wegener
he a guy that thought of the theroy of the continetal drift
Continental Drift
Continental drift was a theory that explained how continents shift position on Earth’s surface.
Convergent Boundary
In plate tectonics, a convergent boundary, also known as a destructive plate boundary
Divergent Boundary
In plate tectonics, a divergent boundary or divergent plate boundary
Transform Boundary
A transform fault or transform boundary, is a type of fault whose relative motion is predominantly horizontal, in either a sinistral or dextral direction.
Sea-floor Spreading
the formation of new areas of oceanic crust, which occurs through the upwelling of magma at midocean ridges and its subsequent outward movement on either side.
Pangaea
Pangea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras.
Laurasia
Laurasia was the more northern of two supercontinents that formed part of the Pangaea supercontinent around 300 to 200 million years ago.
Gondwana
In paleogeography, Gondwana, also Gondwanaland, is the name given to an ancient supercontinent. I
Mesosaurus
Mesosaurus is an extinct genus of reptile from the Early Permian of southern Africa and South America.
Glossopteris
Glossopteris is the largest and best-known genus of the extinct order of seed ferns known as Glossopteridales. T