Monday, March 23, 2015

Terms For Mt 3 Physical Science

Terms:


Continent: one of the main landmasses of the globe, usually counted as seven in number(Europe, Asia, Africa, North America, South America, Australia, and Antarctica).

Continental Drift:  the theory governing movement of continents which explains the formation,alteration, and extremely slow movement of the continents across the earth’s crust.


Continental Plate:  a tectonic plate that is found on land/continents.


Crust: The layer of igneous, sedimentary, and metamorphic rocks which forms the continents and the areas of shallow seabed close to their shores


Fossils: the preserved remains or traces of animals, plants, and other organisms from the remote past


Mid-Ocean Ridge: Any of several seismically active submarine mountain ranges that extend through the Atlantic, Indian, and South Pacific Oceans, each hypothesized to be the locus of sea-floor spreading


Oceanic Crust: the part of Earth's lithosphere that surfaces in the ocean basins


Oceanic Plate: a tectonic plate that is found in the ocean


Oceans: Main water bodies on the Earth’s surface


Paleomagnetism: the study of the record of the Earth's magnetic field in rocks, clay, or bricks. This record provides information on the past behavior of Earth's magnetic field and the past location of tectonic plates.


Pangaea: Alfred Wagner first theorized that continents had been joined in this single super continent


Plates: A part of earth’s crust that moves in relation to one another as defined by the theory of plate
tectonics


Sea-floor Spreading:  Africa and North America are slowly being pushed apart due to this phenomena

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