CHAPTER 3 TECTONICS Vatnajokull Glacier- Iceland
... 2. Rocks 4. Climate Pangea, Panthalassa Wadati-1935- earthquakes/ volcanoes may be associated with the continental drift Benioff-1940-revealed Pacific Ring of Fire Hess-1960s- Seafloor Spreading >Ocean Crust is young (less than 180 million) >Youngest at M.O.L., where creation takes place >Destructio ...
... 2. Rocks 4. Climate Pangea, Panthalassa Wadati-1935- earthquakes/ volcanoes may be associated with the continental drift Benioff-1940-revealed Pacific Ring of Fire Hess-1960s- Seafloor Spreading >Ocean Crust is young (less than 180 million) >Youngest at M.O.L., where creation takes place >Destructio ...
volcanoes-natural-processes
... • To understand the natural processes affecting the distribution of volcanic environments ...
... • To understand the natural processes affecting the distribution of volcanic environments ...
Sea-Floor Spreading 49
... 5. The concept of sea-floor spreading suggested evidence that the continents, too, were moving. Why did scientists reach this conclusion? ...
... 5. The concept of sea-floor spreading suggested evidence that the continents, too, were moving. Why did scientists reach this conclusion? ...
Earth`s Structure
... are broken into fragments called plates. Plates interact and cause geologic features and events. When movement occurs due to this activity, it occurs along joints in the plates called faults. ...
... are broken into fragments called plates. Plates interact and cause geologic features and events. When movement occurs due to this activity, it occurs along joints in the plates called faults. ...
Opposition to Continental Drift
... This is a major departure from Wegener’s continental drift hypothesis, which proposed that the continents move through the ocean floor, not with it. ...
... This is a major departure from Wegener’s continental drift hypothesis, which proposed that the continents move through the ocean floor, not with it. ...
Plate Tectonics Picture Study Guide File
... Explain Subduction: Hot rock from deep within the Earth rises and cooler rock near the surface sinks ...
... Explain Subduction: Hot rock from deep within the Earth rises and cooler rock near the surface sinks ...
PlateTectonicsJeopardy 2013_2014
... The San Andreas Fault is a famous example of this type of plate boundary ...
... The San Andreas Fault is a famous example of this type of plate boundary ...
File
... 17. What are the three types of plate collisions that occur at convergent boundaries? Oceanic–oceanic convergence: the subduction of one oceanic plate beneath another at a deep-ocean trench. Oceanic–continental convergence: the subduction of a denser oceanic plate beneath a less-dense continental ...
... 17. What are the three types of plate collisions that occur at convergent boundaries? Oceanic–oceanic convergence: the subduction of one oceanic plate beneath another at a deep-ocean trench. Oceanic–continental convergence: the subduction of a denser oceanic plate beneath a less-dense continental ...
PANGEA
... actually moving toward each other, causing a collision. ÿ2When there is a continent on both sides of the plates, the collision causes the crust to crumble, fold, tilt, or lift, forming mountains. 23The Himalayan Mountains formed along a convergent boundary. 24Volcanoes are also found at convergent b ...
... actually moving toward each other, causing a collision. ÿ2When there is a continent on both sides of the plates, the collision causes the crust to crumble, fold, tilt, or lift, forming mountains. 23The Himalayan Mountains formed along a convergent boundary. 24Volcanoes are also found at convergent b ...
Earth`s Interior and Plate Tectonics
... Seafloor spreading Seafloor = floor at the bottom of the ocean Seafloor spreading = rising magma forces the crust upward and apart, making new seafloor All of the seafloor was made in the last 200 million years ...
... Seafloor spreading Seafloor = floor at the bottom of the ocean Seafloor spreading = rising magma forces the crust upward and apart, making new seafloor All of the seafloor was made in the last 200 million years ...
yr12-pt-lesson-6-hmwk-ws
... Exercise 6: Describe and explain (using annotated diagrams) how the discovery of sea-floor spreading and Palaeomagnetism provided evidence to support the theory of continental drift, subsequently termed plate tectonics. (Hint: include a diagram showing the magnetic stripes in oceanic crust and expla ...
... Exercise 6: Describe and explain (using annotated diagrams) how the discovery of sea-floor spreading and Palaeomagnetism provided evidence to support the theory of continental drift, subsequently termed plate tectonics. (Hint: include a diagram showing the magnetic stripes in oceanic crust and expla ...
Z SR Midterm Test Review
... Draw and label an example of sea floor spreading in the box below. Be sure to include and label: molten material (magma) convection current motion and direction mid-ocean ridge crust direction direction of rock/crust movement crust, lithosphere, asthenosphere, lower mantle location of ...
... Draw and label an example of sea floor spreading in the box below. Be sure to include and label: molten material (magma) convection current motion and direction mid-ocean ridge crust direction direction of rock/crust movement crust, lithosphere, asthenosphere, lower mantle location of ...
Our dynamic earth
... ,the next layer is the outer core, then the mantle and finally the crust of which has two types ; the oceanic crust and the continental crust. • Both types of crust is 60 miles deep. • The inner core can reach to the level of heat , 5000 degrees twice as hot as the sun. ...
... ,the next layer is the outer core, then the mantle and finally the crust of which has two types ; the oceanic crust and the continental crust. • Both types of crust is 60 miles deep. • The inner core can reach to the level of heat , 5000 degrees twice as hot as the sun. ...
Plate Tectonics Review Answers
... 25. What happens when two oceanic plates separate? New seafloor will be added. 26. What happens when an oceanic plate collides with a continental plate? The more dense oceanic plate will subduct under the less dense continental plate. Volcanoes or deep ocean trenches can form at this type of boundar ...
... 25. What happens when two oceanic plates separate? New seafloor will be added. 26. What happens when an oceanic plate collides with a continental plate? The more dense oceanic plate will subduct under the less dense continental plate. Volcanoes or deep ocean trenches can form at this type of boundar ...
Plate Tectonics - Travelling across time
... erupt once every thousands of years? Believe it or not, many scientists believe that earthquakes, volcanoes, and even tsunamis are all related to a favorite scientific theory: plate tectonics. About fi y years ago, many scientists came up with an idea on why earthquakes, volcanic activity, and why s ...
... erupt once every thousands of years? Believe it or not, many scientists believe that earthquakes, volcanoes, and even tsunamis are all related to a favorite scientific theory: plate tectonics. About fi y years ago, many scientists came up with an idea on why earthquakes, volcanic activity, and why s ...
What is the theory of plate tectonics?
... observations of seafloor spreading and other effects. In 1967, these ideas were linked in the theory of plate tectonics. According to this theory, the Earth’s crust is like a jigsaw puzzle made up of giant sections called tectonic plates. ...
... observations of seafloor spreading and other effects. In 1967, these ideas were linked in the theory of plate tectonics. According to this theory, the Earth’s crust is like a jigsaw puzzle made up of giant sections called tectonic plates. ...
Planet Earth Test Review
... 7. The larges slabs of lithosphere (tectonic plates) move on top of which physical layer of the earth? The physical layer called: The Asthenosphere 8. Write the following example letters beneath the correct plate boundary: A. San Andreas Fault ...
... 7. The larges slabs of lithosphere (tectonic plates) move on top of which physical layer of the earth? The physical layer called: The Asthenosphere 8. Write the following example letters beneath the correct plate boundary: A. San Andreas Fault ...
Answer Key for Effects of Plate Tectonics Note-taking
... beneath the lighter continental plate, into the asthenosphere. This region is called a subduction zone and the tectonic forces are so strong that a trench or crack can form in the ocean floor. ...
... beneath the lighter continental plate, into the asthenosphere. This region is called a subduction zone and the tectonic forces are so strong that a trench or crack can form in the ocean floor. ...
Internal Structure of the Earth
... center of the Earth • Extremely deep trenches are formed, and also chains of volcanic islands are created (island arcs) • The Japanese Islands are formed this way. ...
... center of the Earth • Extremely deep trenches are formed, and also chains of volcanic islands are created (island arcs) • The Japanese Islands are formed this way. ...
Plate tectonics/boundaries
... figure and identify the type of boundary not shown. A- divergent boundary, sea floor spreads from this boundary Convergent boundary- where the continental crust and oceanic crust meet and the oceanic plate is subducted or pushed under the continental plate. Transform boundary is not shown. 24. Expla ...
... figure and identify the type of boundary not shown. A- divergent boundary, sea floor spreads from this boundary Convergent boundary- where the continental crust and oceanic crust meet and the oceanic plate is subducted or pushed under the continental plate. Transform boundary is not shown. 24. Expla ...
PLATE TECTONICS STUDY GUIDE
... 29. What is the difference between magma and lava? Magma is below earth’s surface, lava is above 30. Be able to label a diagram of the structure of a volcano- see packet 31. What is pyroclastic flow? Movement of pyroclastic material (hot ash and rocks) down the side of a volcano 32. Where is the Ri ...
... 29. What is the difference between magma and lava? Magma is below earth’s surface, lava is above 30. Be able to label a diagram of the structure of a volcano- see packet 31. What is pyroclastic flow? Movement of pyroclastic material (hot ash and rocks) down the side of a volcano 32. Where is the Ri ...
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.