Notes 9-4 Sea Floor Spreading Name p. 331
... ____________________________ takes place at the deep-ocean trenches. This is the process by which the ocean floor sinks beneath a deep-ocean trench and back into the _____________________. ________________________ _______________________ under the lithosphere push new crust that forms at the MOR ___ ...
... ____________________________ takes place at the deep-ocean trenches. This is the process by which the ocean floor sinks beneath a deep-ocean trench and back into the _____________________. ________________________ _______________________ under the lithosphere push new crust that forms at the MOR ___ ...
Plates move apart.
... tape the pieces together at one edge. Push the taped edge into the box until only a few centimeters of the free edges show at the top. ...
... tape the pieces together at one edge. Push the taped edge into the box until only a few centimeters of the free edges show at the top. ...
Earth STAAR tutorial review
... Activity: Pass out world plate tectonics map. Tell students that the current theory of plate tectonics is that the Earth’s crust is divided into around 12 large plates that move around on top of the plastic like layer of the asthenosphere. Ask: What is the force behind the movement of plates? Answer ...
... Activity: Pass out world plate tectonics map. Tell students that the current theory of plate tectonics is that the Earth’s crust is divided into around 12 large plates that move around on top of the plastic like layer of the asthenosphere. Ask: What is the force behind the movement of plates? Answer ...
Developing a Theory of Plate Tectonics
... Mountain Ranges Match • The North American Appalachian Mountain Range has parts found in Greenland and Western Europe. What is the significance of this discovery? ...
... Mountain Ranges Match • The North American Appalachian Mountain Range has parts found in Greenland and Western Europe. What is the significance of this discovery? ...
convection current demonstration
... asthenosphere, and this is what drives the motion of the Earth’s tectonic plates. In the demonstration, the fluid above the flame is heated, which causes expansion and a decrease in density. The hot, less dense fluid rises to the surface. The rising fluid pushes the fluid above it to the sides (hori ...
... asthenosphere, and this is what drives the motion of the Earth’s tectonic plates. In the demonstration, the fluid above the flame is heated, which causes expansion and a decrease in density. The hot, less dense fluid rises to the surface. The rising fluid pushes the fluid above it to the sides (hori ...
Week 2 Discussion Questions
... Osmium has 7 stable isotopes. All we care about are 187Os and 186Os. For the purposes of the T&C paper, all we need to know is that - Continental crust has a lot of 187Os (compared to 186Os), and the Mantle does not have much 187Os. And so ocean crust (which is formed directly from mantle material) ...
... Osmium has 7 stable isotopes. All we care about are 187Os and 186Os. For the purposes of the T&C paper, all we need to know is that - Continental crust has a lot of 187Os (compared to 186Os), and the Mantle does not have much 187Os. And so ocean crust (which is formed directly from mantle material) ...
rocks.
... into mountain ranges. ‣ The highest mountains on Earth, the Himalayas, were formed in this way as the subcontinent of India collided with continental Asia. ‣ Few volcanoes form in these areas because the continental crust is so thick. ...
... into mountain ranges. ‣ The highest mountains on Earth, the Himalayas, were formed in this way as the subcontinent of India collided with continental Asia. ‣ Few volcanoes form in these areas because the continental crust is so thick. ...
study guide for mid term 6th grade
... 15. Factors that affect the rate of erosion include weather, climate, shape of the land, and type of rock. 16. Erosion removes less resilient rock and leaves the more resilient rock behind. 17. Talus is a pile or angular rocks from a rock slide, deposition. 18. The youngest crust is at the mid-ocean ...
... 15. Factors that affect the rate of erosion include weather, climate, shape of the land, and type of rock. 16. Erosion removes less resilient rock and leaves the more resilient rock behind. 17. Talus is a pile or angular rocks from a rock slide, deposition. 18. The youngest crust is at the mid-ocean ...
Plate tectonics, Earthquakes and Volcanoes
... There are 9 large plates and a number of smaller plates and most plates are comprised of both continental and oceanic crust. Of the nine major plates, six are named for the continents embedded in them: the North American, South American, Eurasian, African, Indo-Australian, and Antarctic. ...
... There are 9 large plates and a number of smaller plates and most plates are comprised of both continental and oceanic crust. Of the nine major plates, six are named for the continents embedded in them: the North American, South American, Eurasian, African, Indo-Australian, and Antarctic. ...
File
... 1. Is there a relationship between where mountains, volcanoes, and earthquakes appear? If so what is it? 2. What can you imply about how earth’s crust is shaped below us? Is it one giant layer solid mass that floats above the mantle, or is it broken pieces that all float together above the mantle? W ...
... 1. Is there a relationship between where mountains, volcanoes, and earthquakes appear? If so what is it? 2. What can you imply about how earth’s crust is shaped below us? Is it one giant layer solid mass that floats above the mantle, or is it broken pieces that all float together above the mantle? W ...
THE EVOLUTION OF OCEAN BASINS
... 1. Oceanic crust is much younger than most continental crust. - Oceanic lithosphere must have been generated (at ridges) and destroyed (at subduction zones) many times since the formation of the earth. - Ocean basins form by stretching and splitting (rifting) of continental crust, and the rise of m ...
... 1. Oceanic crust is much younger than most continental crust. - Oceanic lithosphere must have been generated (at ridges) and destroyed (at subduction zones) many times since the formation of the earth. - Ocean basins form by stretching and splitting (rifting) of continental crust, and the rise of m ...
Plate tectonics lecture, Evidence
... formed at ocean ridges and destroyed at deepsea trenches. – Magma is forced toward the crust along an ocean ridge and fills the gap that is created. ...
... formed at ocean ridges and destroyed at deepsea trenches. – Magma is forced toward the crust along an ocean ridge and fills the gap that is created. ...
volcano - Madison County Schools
... volcano forms. How spot volcanoes on the ocean floor can become islands. This is how the Hawai’ian Islands formed. As the Pacific Plate continues to move, the hot spot remains stationary, continuing to punch up through the crust. ...
... volcano forms. How spot volcanoes on the ocean floor can become islands. This is how the Hawai’ian Islands formed. As the Pacific Plate continues to move, the hot spot remains stationary, continuing to punch up through the crust. ...
earth`s layers - Net Start Class
... ● all life exists on or within a few hundred meters above crust ● made of 3 types of solid rock: igneous rock, metamorphic rock, sedimentary rock ...
... ● all life exists on or within a few hundred meters above crust ● made of 3 types of solid rock: igneous rock, metamorphic rock, sedimentary rock ...
Earth`s layers core, mantle, crust
... ● all life exists on or within a few hundred meters above crust ● made of 3 types of solid rock: igneous rock, metamorphic rock, sedimentary rock ...
... ● all life exists on or within a few hundred meters above crust ● made of 3 types of solid rock: igneous rock, metamorphic rock, sedimentary rock ...
Earth`s Many Layers
... Formation of Crust • Continental crust began to form ~ 4 Ga ♣ By partial melting ♣ Has grown gradually since then • Oceanic crust (oldest ~ 200 Ma): ♣ Continuously formed (mid-ocean ridge) ♣ Then destroyed (sinks into mantle) ...
... Formation of Crust • Continental crust began to form ~ 4 Ga ♣ By partial melting ♣ Has grown gradually since then • Oceanic crust (oldest ~ 200 Ma): ♣ Continuously formed (mid-ocean ridge) ♣ Then destroyed (sinks into mantle) ...
UNIT 10 Plate Tectonics Study Guide
... - Transform faults are large and long vertical fractures found within the Earth’s crust that are caused by both divergent zones and because of Earth’s curvature as a sphere. - Thus the driving force of a transform fault is the energy from spreading centers or divergent zones. 1) Movement along these ...
... - Transform faults are large and long vertical fractures found within the Earth’s crust that are caused by both divergent zones and because of Earth’s curvature as a sphere. - Thus the driving force of a transform fault is the energy from spreading centers or divergent zones. 1) Movement along these ...
earthquake - GZ @ Science Class Online
... The low mountain ranges and rock types in North America match parts of Great Britain, France, and Scandinavia. Fossils – patterns in distribution The same fossil reptiles found in South Africa are also found in Brazil and Argentina. ...
... The low mountain ranges and rock types in North America match parts of Great Britain, France, and Scandinavia. Fossils – patterns in distribution The same fossil reptiles found in South Africa are also found in Brazil and Argentina. ...
Tectonic Plates
... 6 Divergent boundaries occur when two plates pull away from each other. When this happens, a rift or tear is made in the lithosphere. Magma from the asthenosphere seeps up through the rift. As magma cools, new crust is made. The new material builds up along the rift. It forms volcanic ridges or indi ...
... 6 Divergent boundaries occur when two plates pull away from each other. When this happens, a rift or tear is made in the lithosphere. Magma from the asthenosphere seeps up through the rift. As magma cools, new crust is made. The new material builds up along the rift. It forms volcanic ridges or indi ...
Continental Drift
... were found in Antarctica. •Glaciers once covered South Africa. Deep scratches from the glaciers were found on rocks. ...
... were found in Antarctica. •Glaciers once covered South Africa. Deep scratches from the glaciers were found on rocks. ...
G-3
... •The Earth’s crust is divided in to seven main lithospheric plates. •Circular heat currents are generated in the Earth’s mantle which cause movement in the plates. •The movement of the Earth’s lithospheric plates is termed as tectonic movements. •Tectonic movements are divided in to horizontal movem ...
... •The Earth’s crust is divided in to seven main lithospheric plates. •Circular heat currents are generated in the Earth’s mantle which cause movement in the plates. •The movement of the Earth’s lithospheric plates is termed as tectonic movements. •Tectonic movements are divided in to horizontal movem ...
planet earth - Mr. Shack`s Class
... gas are formed The mantle is the thickest section – the upper part is solid the lower is liquid The outer core is hot and liquid The inner core is solid...Why would this be solid while the outer is liquid? The high pressure of the outer layers makes it solid ...
... gas are formed The mantle is the thickest section – the upper part is solid the lower is liquid The outer core is hot and liquid The inner core is solid...Why would this be solid while the outer is liquid? The high pressure of the outer layers makes it solid ...
Warm-Up - mssarnelli
... The Lithosphere is broken into many large and small slabs of rock called tectonic plates and where two plates meet, a lot of changes can occur. ...
... The Lithosphere is broken into many large and small slabs of rock called tectonic plates and where two plates meet, a lot of changes can occur. ...
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.