Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Science Test 16
Terms oon mountains and crap...
| Question | Answer |
|---|---|
| Elevation | The altitude of a mountain's summit above sea level. |
| Actual Height | The height of a mountain peak above its base. The base may be at, above, or below sea level. |
| relief | A term used to define the extremes of height or elevation in an area. It is the difference between the hightest and lowest points in a region. |
| mountain range | A series of mountains that seem to have a similar history and are more or less connected by elevated ground between them. |
| mountain system | A group of mountain ranges. |
| depositional mountain | A hill or a mountain formed from sedimentary materials that were deposited by valcanic, glacial, or wind action. |
| erosional mountain | A mountain that has been carvedout by ecxtensive erosion, usually from a plateau. It is sometimes called a residual mountain. |
| residual mountain | Another name for an erosional mountain, such as mesa, butte, monadnock, horn, and small angle. |
| fold mountain | A mountain that seems to have been formed by the folding of rock layers in adjacent anticlines and synclines. |
| anticline | An area of relatively highter atmospheric pressure. It typically contains a clockwise-rotating wind system in the Northern Hemisphere. |
| syncline | Sedimentary strata folded downward in the shape of trough. |
| monocline | The simplest fold in stratified rock in whick the angle of inclination sharply increases for a short distance. A step-like fold in rocks. |
| dome | A geologic formation similar to an anticline, where the regional rock strata are arched, as in an inverted bowl. |
| basin | A geologic formation similar to a syncline, where the regional rock strata are depressed in a bowllike fashion. |
| overthrust | A reverse fault with an angle of less tyhan 45 degress , where rocks on the upper side of the fault are believed to have been pushed over the rocks on the lower side of the fault. |
| joint | A crack in a rock formation along which there are no indications of slippage. |
| fault | A fracture in a rock formation sich that adjacent surfaces are displaced relative to each other along the plane of fracture. |
| normal fault | A fault in which the body of rock under the fault rises in relation to the rock above the fault. |
| reverse fault | A fault in which the fault face is greater that 45 degress to the horizontal and the body of rock above the fault rises in relation to the rock below the fault. |
| thrust fault | A reverse fault that dips less than 45 degress. |
| strike-slip fault | A fault along which the movement is horizontal. |
| fault-block mountain | A mountain bounded by at least one normal fault. |
| orogeny | The general term referrying to any mountainbuilding proscess that is responsible for the internal structure of mountains |
| geosynicline theory | A naturalistic theory that unsuccessfully attempts to describe the origin of fold mountains and other tectonic features as the products of an uplifted regional syncline, called a geosyncline, that was filled in with sedimentary strata. |
| continental drift theory | A naturalistic theory that accounts for the shape and arrangement of the presentday continents by the slow movement of plates of crust floating on a semi-liquid layer of rock through many millions of years. |
| Pangaea | The single large continent proposed by Alfred Wegener in his continental displacement theory form which all the persent-day continents originated. The original supercontinent that may have existed before a disruption of the earth's crust produced today's |
| Panthealassa Ocean | Tha name given to the hypothetical global ocean surrounding the supercontinent Pangaea by Alfred Wegener in his original continental displacement theory. |
| rift | A crack in the earth's crust along which outward spreading takes place. The mid-ocean ridges contain rifts. |
| sea-floor spreading | The observation that the oceanic tectonic plates ate spreading away from the mid-ocean ridges and seem to be carrying the continents with them. |
| tectonic plate | One of some fifteen semi-rigid pieces of the earth's lithosphere that make ip the outer shell of the earth. Most show some movement relative to adjacent plates. |
| island arc | A long, curved chain of volcanic islands that lines that oceanic margin of a tectonic plate. |
| subduction | A process that is believed to occur as the relatively thin and denser oceanic lithosphere slides under a more massive but less dense continental crust and is bent downward hundreds of kilometers into the mantle. |
| plate tectonics | The theory that the crust of the earth consists of a relatively few semi-rigid plates floating on a plastic or semi-fluid mantle. It is the fundamental naturalistc theory that accounts for mountain ranges, earthquakes, volcantoes, sea-floor,spreading,exc. |
| runaway subduction | The hypothetical cause of catastrophic plate tectonics in which hot mantle rocks under great pressure lequefy, causeing the overlying oceanic crust to slide "downhill" into the mantle under adjacent plates at speeds of many kilometers per hour. |
| catastophic plate tectonics | A creationary theory of the origin of the continents that suggests the earth's crust was created witha single super-continent. This continent broke into tectonic plates during the initial stage of the Cenesis Flood. Rapid subduction of the oceanic plates |
Created by:
courtneycupcake13
Popular World History sets