Scientists believe convection currents (currents caused by differences in temperature) cause the earth's tectonic plates to move.
http://www.chacha.com/question/what-causes-tectonic-pla...
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Tectonic plates are composed of the crust and upper mantle rock which is lighter than the less dense mantle. Rising and falling convection currents in the mantle cause imperceptibly slow movements in the plates (on the rate of fingernail gr...
http://wiki.answers.com/Q/What_causes_tectonic_plates_t...
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The Earth's plates are lighter than the mantle. The top layer of the mantle is almost plastic in it's ability to bend and move without breaking. Heat from the interior of Earth appears to rise in currents through the mantle. The crustal pla...
http://wiki.answers.com/Q/What_causes_the_continental_p...
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A science lesson on why the earth's tectonic plates move. Includes printable teaching reading comprehension lesson worksheets. Objectives: Students will learn that tectonic plate movements are caused by convection currents in earth’s mantle...
http://www.instructorweb.com/lesson/platesmove.asp
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Powered by forces originating in Earth’s radioactive, solid iron inner core, these tectonic plates move ponderously about at varying speeds and in different directions atop a layer of much hotter, softer, more malleable rock called the athenosphere.
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www.platetectonics.com/book/page_4.asp
www.platetectonics.com/book/page_4.asp
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Subject: How do tectonic plates move? ... Date: Wed Jan 19 12:50:24 2005; Posted by Matt ; Grade level: 7-9 School: Van Wert Lincoln Junior High; City: Van Wert State/Province: Ohio Country: United States; Area of science: Earth Sciences; ... What causes the tectonic plates to move?
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www.madsci.org/posts/archives/2005-01/1106275322.Es.q.h...
www.madsci.org/posts/archives/2005-01/1106275322.Es.q.html
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The lithosphere is broken up into what are called tectonic plates, in the case of ... These plates move in relation to one another at one of three types of plate boundaries: convergent or collision boundaries, divergent or spreading boundaries, and transform boundaries. Earthquakes, volcanic activity, mountain-building,
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www.crystalinks.com/tectonicplates.html
www.crystalinks.com/tectonicplates.html
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The chemical reaction within the Earth (or as of the conditions of existence of the Earth) caused/causes the mantle's crust to appear. ... In a sense, the entire crust sitting on the tectonic plates move in an appearance not dissimilar to that of an iceberg on water. But, the analogy can be deceiving, as it has been for many.
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www.earthmatrix.com/tectonic.html
www.earthmatrix.com/tectonic.html
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Convection currents beneath the plates move the plates in different directions. ... Millions of years ago India and an ancient ocean called the Tethys Ocean were sat on a tectonic plate. This plate was moving northwards towards Asia at a rate of 10 centimetres per year. The Tethys oceanic crust was being subducted under...
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www.moorlandschool.co.uk/earth/tectonic.htm
www.moorlandschool.co.uk/earth/tectonic.htm
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