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What happens at the different plate boundaries?
What happens at the different plate boundaries?

... weight move together (i.e. two continental plates). This causes the material between them to buckle and rise up, forming fold mountains. The Himalayas are an example of a chain of fold mountains. They have been formed by the African plate colliding into the Eurasian plate. ...
Plate Tectonics PhET
Plate Tectonics PhET

...  I can describe the differences between continental and oceanic crust.  I can identify and describe the three types of plate boundaries .  I can describe the geologic features created by each type of plate boundary. Go to www.phet.colorado.edu. Click on the orange “Play With Sims” button. On the ...
Chapter 10 Section 2
Chapter 10 Section 2

... • Tectonic plate boundaries may be in the middle of the ocean floor, around the edges of continents, or even within continents. • The three types of plate boundaries are – divergent boundaries – convergent boundaries – transform boundaries • Each plate boundary is associated with a characteristic ty ...
Study Guide 2
Study Guide 2

... Plate Tectonics Alfred Wegener’s observations supporting Continental Drift Differences between Plate Tectonics and Continental Drift Features of divergent, convergent, transform fault boundaries Layers of the Earth and their features, based on physical properties  lithosphere (includes both crust ...
Section 1
Section 1

... uplifted Fault block mountains - a mountain that forms where faults break Earth’s crust into large blocks and some blocks drop down relative to other blocks Dome mountains - a circular or elliptical, almost symmetrical elevation or structure in which the stratified rock slopes downward gently from t ...
Formation of metamorphic rocks in Ireland | sample answer
Formation of metamorphic rocks in Ireland | sample answer

... Formation of metamorphic rocks in Ireland | sample answer Q. ‘Explain the formation of metamorphic rocks, with reference to examples from Ireland’ (2013 Q1 B.) Metamorphic rocks are formed when igneous or sedimentary rocks change due to the fact they have been put under great heat or pressure or bot ...
Chapter 19 Study Notes: The Ocean Basins
Chapter 19 Study Notes: The Ocean Basins

... • The _____-_______ ridges in Iceland are unusual because they rise _____ sea level. – mid– ocean – above ...
chp 6, 7, 8, 10 study guide
chp 6, 7, 8, 10 study guide

... 2. How are the inner core and outer core the same? How are Earth’s crust and mantle different? 3. What do the plate tectonics make up? What causes them to move? 4. What was the supercontinent that existed 200 million years ago called? What did Wegener use to support his theory of continental drift? ...
1 Plate Tectonics Review Homework w
1 Plate Tectonics Review Homework w

... An _________ suite is the sequence of rocks that makes up oceanic lithosphere. ...
Geoscience Day Starters
Geoscience Day Starters

... where an oceanic plate is forced beneath a second plate where an oceanic plate grinds past a second plate where a continental plate grinds past a second plate where an oceanic plate moves away from a second plate ...
Crust - Spaulding Middle School
Crust - Spaulding Middle School

... Motion of the Lithospheric Plates  Plates float on the upper part of the mantle.  Convection currents can cause the asthenosphere to flow slowly carrying with it the plates of the lithosphere.  This movement of plates changes the sizes, shapes, and positions of Earth’s continents and oceans. Geol ...
Mars Tectonics & Volcanology
Mars Tectonics & Volcanology

... Volcanology of Earth • Most of Earth’s volcanism is related to plate tectonics • Divergent and convergent boundaries ...
File
File

... *Earth’s continents and oceans rest on huge plates of solid rock * Where plates are pull away from each other molten magma flows upward between the plates forming mid-ocean ridges, underwater volcanoes, and new ocean floor crust. The Mid-Atlantic Ridge, is an example of this type of plate boundary * ...
Crust
Crust

... way back, known as Pangaea. As the years passed on, movements of the earths crust began to break down the “super continent”, which eventually led to the creation of 6 large masses of land other wise known as continents. These continents are part of the continental crust. The six continents are Euras ...
plate tectonics - Math/Science Nucleus
plate tectonics - Math/Science Nucleus

... past each other horizontally. This is called a transform plate boundary. Volcanoes and earthquakes help define the boundaries between the plates. Volcanoes form mostly at converging and diverging plate boundaries, where much magma is generated. Earthquakes occur at all three types of boundaries. Bec ...
Pangea Breaks Up!
Pangea Breaks Up!

... ► What happens to the buoyancy of the lithosphere? ► What is the result of this? ...
GEOL_10_activity_05
GEOL_10_activity_05

... Lithospheric Plates: Color the primary lithospheric plates. ...
What evidence supports plate tectonics?
What evidence supports plate tectonics?

... What evidence supports plate tectonics? • The north and south poles have repeatedly switched throughout Earth’s history, resulting in a a magnetic reversal. • As new sea floor forms, magnetic minerals align with the current arrangement of Earth’s poles and become stuck in that position as the rock h ...
Plate Tech WebQuest
Plate Tech WebQuest

... 10. Click on Convergent plates to the left hand side of the screen: What are convergent plate boundaries? ...
Convergent Boundaries
Convergent Boundaries

... plate boundary. (What happens or is formed here?) • ____ & ____ @ Divergent Boundaries • ____ & ____ @ Convergent Boundaries • __________ @ Transform Boundaries ...
Introduction to Geomagnetism
Introduction to Geomagnetism

... Several satellite missions, most recently, the Øersted and Champ missions, have mapped the Earth's geomagnetic field from altitude and then downward continued the measurements to a sphere of average Earth radius. The spherical harmonic coefficients obtained from these missions construct the IGRF (In ...
Course Outline and General Information
Course Outline and General Information

... context of plate tectonics. Control and prediction of earthquakes. The Earth’s interior The Earth’s internal structure. Isostasy and isostatic rebound. Gravity. Earth’s magnetic field. Heat flow. Ocean floor Origin of the oceans. Sea floor, continental shelves and slopes. Submarine canyons. Passive ...
File - The Building Blocks For Learning
File - The Building Blocks For Learning

... 4. The heat from the core heats the mantle causing convection currents 5. These convection currents move the lithosphere over the asthenosphere. Divergent Boundary: 1. Divergent boundaries move away each other. 2. The lithosphere moves over the asthenosphere. 3. An example of this is sea floor sprea ...
On the Move
On the Move

... Convection currents in the asthenosphere are the driving force for all plate movements. ...
Plate Tectonics
Plate Tectonics

... There are two kinds of crust, continental and oceanic. The continental crust makes up continents. The oceanic crust makes up the floor of the ocean. The plates do not follow the edges of the continents. Many plates are made of both continental and oceanic crust. Most of the United States is on the N ...
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Plate tectonics



Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός ""pertaining to building"") is a scientific theory that describes the large-scale motion of Earth's lithosphere. This theoretical model builds on the concept of continental drift which was developed during the first few decades of the 20th century. The geoscientific community accepted the theory after the concepts of seafloor spreading were later developed in the late 1950s and early 1960s.The lithosphere, which is the rigid outermost shell of a planet (on Earth, the crust and upper mantle), is broken up into tectonic plates. On Earth, there are seven or eight major plates (depending on how they are defined) and many minor plates. Where plates meet, their relative motion determines the type of boundary; convergent, divergent, or transform. Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries. The lateral relative movement of the plates typically varies from zero to 100 mm annually.Tectonic plates are composed of oceanic lithosphere and thicker continental lithosphere, each topped by its own kind of crust. Along convergent boundaries, subduction carries plates into the mantle; the material lost is roughly balanced by the formation of new (oceanic) crust along divergent margins by seafloor spreading. In this way, the total surface of the globe remains the same. This prediction of plate tectonics is also referred to as the conveyor belt principle. Earlier theories (that still have some supporters) propose gradual shrinking (contraction) or gradual expansion of the globe.Tectonic plates are able to move because the Earth's lithosphere has greater strength than the underlying asthenosphere. Lateral density variations in the mantle result in convection. Plate movement is thought to be driven by a combination of the motion of the seafloor away from the spreading ridge (due to variations in topography and density of the crust, which result in differences in gravitational forces) and drag, with downward suction, at the subduction zones. Another explanation lies in the different forces generated by the rotation of the globe and the tidal forces of the Sun and Moon. The relative importance of each of these factors and their relationship to each other is unclear, and still the subject of much debate.
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