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Tectonic Landscapes Revision
Tectonic Landscapes Revision

... The movement of the land mass on the crust is known as Continental Drift. ...
part 1 - Research at UVU
part 1 - Research at UVU

... Q1: Use the attached shaded relief map of North America and the eastern Pacific Ocean to map the location of plate boundaries in this region of Earth (Aleutian Subduction Zone, Queen Charlotte-Fairweather Fault, Juan De Fuca Ridge, Cascadia Subduction Zone, Mendicino Transform, San Andreas Fault, Ba ...
Core
Core

... The lithosphere (crust and upper mantle) is divided into separate plates which move very slowly in response to the “convecting” part of the mantle. ...
Jigsaw Readings
Jigsaw Readings

... possible result is that plates collide to form mountains chains. Another result is that one plate can be pushed into a subduction zone beneath the other. But what about the opposite result? What happens when plates move in opposite directions? What happens when plates are stretched to the limit? Jus ...
Earth/Space Review Sheet
Earth/Space Review Sheet

... content has changed inside of the earth due to heat and pressure Sedimentary Rock – rock that forms from compressed or cemented layers of sediment on earth’s surface. Older Sedimentary Rock is buried lower in the ground, newer rock is deposited on top. ...
Lecture 2 The Earth. I. The Interior Earth – vital statistics Planet size
Lecture 2 The Earth. I. The Interior Earth – vital statistics Planet size

Exam
Exam

... was accepted by scientists until the late 1960s was replaced by the theory of plate tectonics was incorporated within the theory of plate tectonics A and B are both correct; C is incorrect ...
The Restless Earth - Whitworth Community High School
The Restless Earth - Whitworth Community High School

... 76% of Nepalese are farmers. The steep relief makes rice farming difficult, so slopes are terraced to make the growing of crops easier. Farmers are mainly subsistence farmers and rely on growing crops for their own families to survive. Crops are mixed with goats and cattle due to poor soils. Governm ...
Geology :: 9. Convergent and transform fault plate margins
Geology :: 9. Convergent and transform fault plate margins

... Thinner and thicker oceanic lithosphere Near the spreading centre, the lithosphere is thin and its boundary with the asthenosphere comes close to the surface. This thinning happens because rising magma heats the lithosphere and only a thin layer near the top retains the hard, rigid strength properti ...
Unit 7 – Forces that Change the Earth Study Guide 1. What is
Unit 7 – Forces that Change the Earth Study Guide 1. What is

... plate movement that results in mountain building? a. Arrows going the same direction b. Arrows moving away from each other c. Arrows moving past each other in opposite directions d. Arrows moving toward each other 16. True or False – The formation of mountains is not explained by the theory of plate ...
the junior version pdf file
the junior version pdf file

... Do we want to discover the characteristics of the Earth’s surface and its internal structure? The planet we live on is the Earth and it is shaped like a large ball floating in Space. The Earth has a particular structure consisting of three parts: an external part known as the crust, a central part k ...
Plate Tectonics - Warren County Public Schools
Plate Tectonics - Warren County Public Schools

... hypothesize his continental drift theory? 5.What direct evidence did Hess have to conclude from his research seafloor spreading? 6. What causes plates to move? ...
Seismix2003
Seismix2003

... margin formation incorporating heterogeneous stretching, the effects of melt generation and emplacement and varying thermal anomalies in the mantle. The addition of melt to the crust, together with the rapid asthenospheric mantle temperature variations that accompany interaction of a mantle plume wi ...
Layers of the Earth NOTES
Layers of the Earth NOTES

... ...
Plate tectonics in a hotter Earth?
Plate tectonics in a hotter Earth?

... • BasaltEclogite transition can overcome buoyancy problem • For 100 K hotter Earth, subduction resembles present-day’s. • For hotter Earth, slower or no plate tectonics, because: • weaker slabs lead to more slab break-off • weaker, thicker crust leads to more crust separation • Lack of UHPM older t ...
File
File

Convergent Boundaries
Convergent Boundaries

... A convergent boundary is a boundary between two plates that are moving toward each other, or converging. Two broad classifications for convergent boundaries are subduction boundaries and collision boundaries. ...
Pre-visit Lesson: Grades K-2 - Washington State Parks and
Pre-visit Lesson: Grades K-2 - Washington State Parks and

... Lesson: Vocabulary and Plate Tectonics Introduction: begin by introducing the topic of plate tectonics and the new key words the students will be learning. Demonstration: Plate tectonics is the theory that the earth’s crust is made up of separate plates that are constantly moving on the mantle. Whe ...
report - University of Dayton
report - University of Dayton

... Scientific discovery can at times be planned, logical, and sequential and at other times be driven by serendipities. Major scientific theories have been built by the contributions of numerous individuals, are modified as new observations are made, and will continue to change in the future. The Earth ...
Name Jordan Sullivan Date October 6, 2014 Period 1 Plate
Name Jordan Sullivan Date October 6, 2014 Period 1 Plate

... At some convergent boundaries, an oceanic plate collides with a continental plate. Oceanic crust tends to be denser and thinner than continental crust, so the denser oceanic crust gets bent and pulled under, or subducted beneath the lighter and thicker continental crust. This forms what is called a ...
PowerPoint Lecture Chapter 12
PowerPoint Lecture Chapter 12

... f. Convergent plate boundaries also exist between two slabs of oceanic lithosphere ...
Plate C Plate D
Plate C Plate D

... Activity 4: Ocean Depth and Age of Crust We have seen that as ocean crust moves away from mid-ocean ridge it gets older and deeper. We now can derive a relationship between water depth and age. 1. Make a plot of the Water Depth (D) vs. T 1/2 (where T = age of oceanic crust) on the graph below. First ...
Earth`s Interior
Earth`s Interior

... The crust is a very thin skin which surrounds the planet (like the shell on an egg). There are two types of crust: Oceanic crust: which is thin (≈7 km) and is made up of dense volcanic rock (basaltic). Oceanic crust is “young” (180 million years old). Continental crust: which is thick (≈ 35 km) and ...
File
File

... The broken sections of the crust are referred to as plates (tectonic). These plates fit together along Earth’s surface like a puzzle. The plates move along the surface very slowly. The upper part of the mantle acts like a plastic and is called the asthenosphere. It allows the plates to move. ...
Chapter 9 Notes III. Continental Tectonics I. Great ocean basins
Chapter 9 Notes III. Continental Tectonics I. Great ocean basins

... 1.boundaries movement past each other in the horizontal plane. There is little to no vertical movement. 2 Fault type is Strike Slip or Later a. Lateral (right and left) 1. lateral: can be further designated right lateral or left lateral if one looks across the fault zone to see if the opposite block ...
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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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