Plates are large rigid slabs on Earth`s surface. Interact at boundaries
... Boundaries are not often at edge of continent; often in the ocean. Plate boundary is exposed at Iceland, on the Mid‐Atlantic Ridge. This is an area of rifts and earthquakes, geysers and hot springs, basaltic volcanic activity, which fills the rift as the plates diverge. It is a divergent bounda ...
... Boundaries are not often at edge of continent; often in the ocean. Plate boundary is exposed at Iceland, on the Mid‐Atlantic Ridge. This is an area of rifts and earthquakes, geysers and hot springs, basaltic volcanic activity, which fills the rift as the plates diverge. It is a divergent bounda ...
Plate tectonics and the distribution of Earthquakes
... When 2 continental plates collide, fold mountains are formed. (eg Himalaya Mountains) The creations of fold mountains cause shallow quakes. The focus can be only 70km under the surface. Since they are shallow they can be very powerful eg the Sichuan Quake, China was 8 on the richter scale and only 1 ...
... When 2 continental plates collide, fold mountains are formed. (eg Himalaya Mountains) The creations of fold mountains cause shallow quakes. The focus can be only 70km under the surface. Since they are shallow they can be very powerful eg the Sichuan Quake, China was 8 on the richter scale and only 1 ...
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... thought to be the driving mechanism of plate movements. • Convection currents in this part of the mantle are set in motion by the transfer of energy between Earth’s hot interior and its cooler exterior. ...
... thought to be the driving mechanism of plate movements. • Convection currents in this part of the mantle are set in motion by the transfer of energy between Earth’s hot interior and its cooler exterior. ...
Plate Tectonics and Continental Drift
... 3. What are the forces that drive plate tectonics? 4. What happens at the boundaries between plates? 5. How do the different types of plate boundaries impact the regional geology and geomorphology? 6. How has continental drift affected the positions of the continents over time? ...
... 3. What are the forces that drive plate tectonics? 4. What happens at the boundaries between plates? 5. How do the different types of plate boundaries impact the regional geology and geomorphology? 6. How has continental drift affected the positions of the continents over time? ...
The Structure of the Earth and Plate Tectonics
... Ocean-Ocean Plate Collision • Wh When two t oceanic i plates l t collide, llid one runs over the other which causes it to sink into the mantle forming a subduction zone. • The subducting plate is bent downward. This forms the deepest p areas in the ocean floor called trenches. – Ex. The Mariana Tren ...
... Ocean-Ocean Plate Collision • Wh When two t oceanic i plates l t collide, llid one runs over the other which causes it to sink into the mantle forming a subduction zone. • The subducting plate is bent downward. This forms the deepest p areas in the ocean floor called trenches. – Ex. The Mariana Tren ...
Earth`s Interior Worksheet A Journey to the Center of the Earth (p. 9
... 11. How deep is the mantle? Core (p. 11) 12. The earth’s core is made of two parts… what are they? 13. Which two metals make up both parts of the core (the reason why the core is considered one layer)? Exploring Earth’s Interior (p. 13) Label the layers of the Earth on the drawing below with the wor ...
... 11. How deep is the mantle? Core (p. 11) 12. The earth’s core is made of two parts… what are they? 13. Which two metals make up both parts of the core (the reason why the core is considered one layer)? Exploring Earth’s Interior (p. 13) Label the layers of the Earth on the drawing below with the wor ...
1-4 Notes: Convergent and Transform Boundaries Think About… • If
... The Cascade Mountains in Oregon and Washington is a coastal mountain range. Mt. St. Helens is an active volcano that is part of the Cascade mountains. Transform Boundaries At transform boundaries, two plates move past each other. Crust is neither created nor destroyed. As the plates move, ...
... The Cascade Mountains in Oregon and Washington is a coastal mountain range. Mt. St. Helens is an active volcano that is part of the Cascade mountains. Transform Boundaries At transform boundaries, two plates move past each other. Crust is neither created nor destroyed. As the plates move, ...
Earth, continental drift, plate tectonics, sea floor spreading
... When both are oceanic plates, one slides under the other. Often an island group forms at this boundary. ...
... When both are oceanic plates, one slides under the other. Often an island group forms at this boundary. ...
Tectonic Plates Boundaries
... edge of two plates meet. 3 Plate Boundaries and 1 other 1. Divergent - occurs where plates move apart (mostly in oceans) 2. Convergent - occurs where plates push together 3. Transform - occurs where plates ...
... edge of two plates meet. 3 Plate Boundaries and 1 other 1. Divergent - occurs where plates move apart (mostly in oceans) 2. Convergent - occurs where plates push together 3. Transform - occurs where plates ...
Geosphere!
... •Plate tectonics are constantly moving either •Away from one another (Divergent) •Slipping past one another (Transform) •Colliding into each other (Convergent) ...
... •Plate tectonics are constantly moving either •Away from one another (Divergent) •Slipping past one another (Transform) •Colliding into each other (Convergent) ...
Disasters - The Bored of Studies Community
... Divergent boundaries/Spreading zones eg-Mid Atlantic Ridge At divergent boundaries, plates are moving apart from each other and the space that this creates is filled with new crust due to the process of sea-floor spreading. Convergent boundaries eg- Himalayas At convergent boundaries, plates collid ...
... Divergent boundaries/Spreading zones eg-Mid Atlantic Ridge At divergent boundaries, plates are moving apart from each other and the space that this creates is filled with new crust due to the process of sea-floor spreading. Convergent boundaries eg- Himalayas At convergent boundaries, plates collid ...
Study Guide Answer Key for Plate Tectonics
... 24. Which ocean is shrinking? How is this possible? The Pacific—its many trenches are subducting crust faster than new crust is being created at the mid-ocean ridges 25. Which ocean is expanding? How is this possible? The Atlantic—the mid-ocean ridge is adding more crust faster than the trenches are ...
... 24. Which ocean is shrinking? How is this possible? The Pacific—its many trenches are subducting crust faster than new crust is being created at the mid-ocean ridges 25. Which ocean is expanding? How is this possible? The Atlantic—the mid-ocean ridge is adding more crust faster than the trenches are ...
Plate Tectonics
... which movement has occurred. Most active faults are located at or near plate boundaries. Earthquakes result when movement occurs along a fault. When rocks are compressed horizontally, their layers may be deformed into wave-like forms called folds. This commonly occurs during continental collisio ...
... which movement has occurred. Most active faults are located at or near plate boundaries. Earthquakes result when movement occurs along a fault. When rocks are compressed horizontally, their layers may be deformed into wave-like forms called folds. This commonly occurs during continental collisio ...
Plate Tectonics
... • DIVERGENT BOUNDARIES – Two plates moving apart from each other form this type of boundary. The cooling of the molten rock when it reaches the surface causes new crust to be formed constantly (e.g., Mid-Atlantic Ridge) • CONVERGENT BOUNDARIES – Two plates moving towards each other create this fault ...
... • DIVERGENT BOUNDARIES – Two plates moving apart from each other form this type of boundary. The cooling of the molten rock when it reaches the surface causes new crust to be formed constantly (e.g., Mid-Atlantic Ridge) • CONVERGENT BOUNDARIES – Two plates moving towards each other create this fault ...
Plate Tectonics
... moving apart from each other form this type of boundary. The cooling of the molten rock when it reaches the surface causes new crust to be formed constantly (e.g., Mid-Atlantic Ridge) • CONVERGENT BOUNDARIES – Two plates moving towards each other create this fault. Typically one plate is forced abov ...
... moving apart from each other form this type of boundary. The cooling of the molten rock when it reaches the surface causes new crust to be formed constantly (e.g., Mid-Atlantic Ridge) • CONVERGENT BOUNDARIES – Two plates moving towards each other create this fault. Typically one plate is forced abov ...
Ch 17 PP
... • The theory of plate tectonics states that the lithosphere is divided into 12 large sections (plates) and about 20 smaller ones. ...
... • The theory of plate tectonics states that the lithosphere is divided into 12 large sections (plates) and about 20 smaller ones. ...
Earth`s outer layer has moved.
... • The theory of plate tectonics states that the lithosphere is divided into 12 large sections (plates) and about 20 smaller ones. ...
... • The theory of plate tectonics states that the lithosphere is divided into 12 large sections (plates) and about 20 smaller ones. ...
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... •consist mainly of dense rock (basalt dark in color) •5-8 km thick Continental Crust •crust that forms the continents •consist mainly of less dense rock (granite ...
... •consist mainly of dense rock (basalt dark in color) •5-8 km thick Continental Crust •crust that forms the continents •consist mainly of less dense rock (granite ...
Reinforcing Key Concepts
... Scientists have been able to describe what each layer is made of and how thick the layers are. In the diagram below, label each of Earth’s layers. In the space provided, explain what each layer is made of. ...
... Scientists have been able to describe what each layer is made of and how thick the layers are. In the diagram below, label each of Earth’s layers. In the space provided, explain what each layer is made of. ...
The surface of Earth is made of several pieces, called plates, that
... feet at a time, but the movement creates a shockwave in the ground that can cause terrible damage and injury to people if their buildings are too flimsy to stand the shaking. Mountain ranges form when one plate slides under another pushing it upward, or when two plates push against each other and th ...
... feet at a time, but the movement creates a shockwave in the ground that can cause terrible damage and injury to people if their buildings are too flimsy to stand the shaking. Mountain ranges form when one plate slides under another pushing it upward, or when two plates push against each other and th ...
Earth Science: Plate Tectonics
... • When the current comes at a weaker part of the ________, for example at a _______, ________ comes above the earth's surface. • This is called ______ _______. • The movement of these plates goes very slowly. • The _______ of two tectonic plates causes an _________. • The ________ _______ along the ...
... • When the current comes at a weaker part of the ________, for example at a _______, ________ comes above the earth's surface. • This is called ______ _______. • The movement of these plates goes very slowly. • The _______ of two tectonic plates causes an _________. • The ________ _______ along the ...
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.