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Aright i cant find this info in any book! ineeeeed help for science tomorrow. ok heres the question:What are two names for the idea that the peices of crust(tectonic plates) move? please help me ill give a best awser to antone that gives me a good awnser or at least some info:) thanks

2007-02-12 12:12:29 · 9 answers · asked by Anonymous in Education & Reference Homework Help

9 answers

www.notinmybook.com

2007-02-12 12:20:10 · answer #1 · answered by icecreamboy121 4 · 1 0

Maybe this will help you out. The main piece of the story is aw wikipedia.

Plate tectonics (from Greek τέκτων, tektōn "builder" or "mason") is a theory of geology that has been developed to explain the observed evidence for large scale motions of the Earth's crust. The theory encompassed and superseded the older theory of continental drift from the first half of the 20th century and the concept of seafloor spreading developed during the 1960s.

The outermost part of the Earth's interior is made up of two layers: above is the lithosphere, comprising the crust and the rigid uppermost part of the mantle. Below the lithosphere lies the asthenosphere. Although solid, the asthenosphere has relatively low viscosity and shear strength and can flow like a liquid on geological time scales. The deeper mantle below the asthenosphere is more rigid again.

The lithosphere is broken up into what are called tectonic plates—in the case of Earth, there are seven major and many minor plates (see list below). The lithospheric plates ride on the asthenosphere. These plates move in relation to one another at one of three types of plate boundaries: convergent, divergent, and transform. Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along plate boundaries. The lateral movement of the plates is typically at speeds of 0.66 to 8.50 centimeters per year.

2007-02-12 20:25:28 · answer #2 · answered by sgt_cook 7 · 1 0

Enough information here to give you a start for your project.

WEBSITES ON EARTHQUAKES & VOLCANOES

A comprehensive site with lots of links.

http://www.cumbavac.org/Earthquakes_Volcanoes.htm

Earthquakes

http://www.stemnet.nf.ca/CITE/earthquakes.htm

Teacher Resources on Earthquakes

http://www.stemnet.nf.ca/CITE/earthquakes_teacher.htm

http://www.volcano.si.edu/

http://vulcan.wr.usgs.gov/Glossary/PlateTectonics/framework.html

http://vulcan.wr.usgs.gov/Glossary/PlateTectonics/Maps/map_plate_tectonics_world.html

http://www.mapsofworld.com/major-volcanoes.htm

Potentially Active Volcanoes in the 48 United States

http://www.nationalatlas.gov/dynamic/dyn_vol-us.html

http://www.nationalatlas.gov/dynamic/dyn_volcano.html

Good luck.

Kevin, Liverpool, England.

2007-02-12 21:28:44 · answer #3 · answered by Anonymous · 0 0

Pangea (all were together at once), continental drift (drifted apart) Techtonic Plate theory? Any of this ringing a bell?

2007-02-12 20:16:40 · answer #4 · answered by Anonymous · 1 0

plate tectonics pangea earthquakes

2007-02-12 20:19:53 · answer #5 · answered by Anonymous · 0 0

continetal drift
that's the only one i no. we only went over 1 in class my science teacher said there was another but he never told us what it was

hope this helps,
countrychick26

2007-02-12 20:19:13 · answer #6 · answered by ? 2 · 0 0

I know one is plate tectonics

the other is...I don't know but i hope this helps you along

2007-02-12 20:20:29 · answer #7 · answered by who wants to know? 2 · 0 0

continential drift maybe?

2007-02-12 20:18:46 · answer #8 · answered by Kipper to the CUP! 6 · 0 0

idk but yeps srry but hi ashley how r u? jk jk lol go to dg .com k
luv ashley

2007-02-12 20:27:50 · answer #9 · answered by ashipaila 2 · 0 1

fedest.com, questions and answers