flash cards

tectonic plates voc

Term Definition
lava hot molten or semifluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this.
Mid ocean ridge a long, seismically active submarine ridge system situated in the middle of an ocean basin and marking the site of the upwelling of magma associated with seafloor spreading. An example is the Mid-Atlantic Ridge.
divergent plate In plate tectonics, a divergent boundary or divergent plate boundary (also known as a constructive boundary or an extensional boundary) is a linear feature that exists between two tectonic plates that are moving away from each other.
fault (of a rock formation) be broken by a fault or faults.
convergent plate In plate tectonics, a convergent boundary, also known as a destructive plate boundary, is a region of active deformation where two or more tectonic plates or fragments of the lithosphere near the end of their life cycle.
Subduction the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
Transform Fault Boundary A transform fault or transform boundary (also known as a conservative plate boundary, since these faults neither create nor destroy lithosphere)
magma hot fluid or semifluid material below or within the earth's crust from which lava and other igneous rock is formed by cooling.
Alfred wegener Alfred Lothar Wegener was a German polar researcher, geophysicist and meteorologist. During his lifetime he was primarily known for his achievements in meteorology and as a pioneer of polar research
layers of the earth The interior structure of the Earth is layered in spherical shells. These layers can be defined by their chemical and their rheological properties.
Tectonic Plates tectonic plate. noun. the two sub-layers of the earth's crust (lithosphere) that move, float, and sometimes fracture and whose interaction causes continental drift, earthquakes, volcanoes, mountains, and oceanic trenches.
seafloor 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.
paleomagnetism the branch of geophysics concerned with the magnetism in rocks that was induced by the earth's magnetic field at the time of their formation.

Leave a Reply

Your email address will not be published. Required fields are marked *