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20 Cards in this Set
- Front
- Back
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Continental drift |
A theory stating the earth continents have been drawing together and have moved away from each other at different times in Earth's history |
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Convection currents |
Movement in the fluid caused by uneven heating |
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Convergent boundary |
Border foreign by the collision of two lithospheric plates |
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Divergent boundary |
Boundary formed by two lithospheric plates that are moving apart |
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Earthquake |
Vibration of earths crust |
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Fault |
Breaking rock along which rocks on either side of the break move |
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Folding |
Permanent deformation or bending of a rock under stress |
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Hotspots |
Area of volcanism within a lithospheric plate |
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Island arcs |
Chain of volcanic islands formed along in the ocean trench |
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Mountain |
Massive and steep sided raised portion of the earth surface formed through volcanic activity erosion or collision of two tectonic plates |
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Paleomagnetism |
Earths record of magnetism in rocks |
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Plate techtonics |
Theory that the lithosphere is made up of plates that float on the asthenophere and that the plates possible are moved by convection current |
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Rift Valley's |
Steep narrow valley formed as lithospheric plates separate |
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Seafloor spreading |
Movement on the ocean floor away from either side of a mid ocean range |
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Subduction zone |
Region where one lithospheric plate moves under another |
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Transform boundary |
Boundary formed where to lithospheric plates slide past each other |
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Trenches |
Deep Valley in the ocean floor |
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Tsunamis |
Giant ocean wave that often occurs after major earthquake within epiccenter on the ocean floor |
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Volcano |
An opening or rapture in a planet surface or crust which allows hot magma ash and gases to scape from below the surface |
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Weathering |
Changing and physical form or chemical composition of rock materials exposed at the earth surface |
