File - Earth Science With Mrs. Locke
... Rock is solid but fluid Moves due to convection causing plates to drift 250 km thick ...
... Rock is solid but fluid Moves due to convection causing plates to drift 250 km thick ...
Science 3360 - Kennesaw State University | College of Science and
... The Continental Drift Theory The Deep Sea Drilling Project (DSDP) was conceived in the mid-1960s but active drilling did not begin until 1968. The goal of the program was to investigate the evolution of the ocean basins by core drilling the ocean sediments and the underlying oceanic crust. Drilling ...
... The Continental Drift Theory The Deep Sea Drilling Project (DSDP) was conceived in the mid-1960s but active drilling did not begin until 1968. The goal of the program was to investigate the evolution of the ocean basins by core drilling the ocean sediments and the underlying oceanic crust. Drilling ...
Plate Tectonic Webquest
... Observe the diagram to see how the continents drifted to where they are today. You can also see the movement in reverse! 1. Count the major plates. How many are there?___________________ 2. The theory of plate tectonics (meaning "plate structure") was developed in the 1960's. This theory explains th ...
... Observe the diagram to see how the continents drifted to where they are today. You can also see the movement in reverse! 1. Count the major plates. How many are there?___________________ 2. The theory of plate tectonics (meaning "plate structure") was developed in the 1960's. This theory explains th ...
Plate Tectonic Webquest Plate Tectonic Webquest Site 1: http://www
... Observe the diagram to see how the continents drifted to where they are today. You can also see the movement in reverse! 1. Count the major plates. How many are there?___________________ 2. The theory of plate tectonics (meaning "plate structure") was developed in the 1960's. This theory explains th ...
... Observe the diagram to see how the continents drifted to where they are today. You can also see the movement in reverse! 1. Count the major plates. How many are there?___________________ 2. The theory of plate tectonics (meaning "plate structure") was developed in the 1960's. This theory explains th ...
File - Units 1 & 2 Geography
... At a constructive plate boundary, two plates move apart. As the two plates move apart, magma rises up to fill the gap. This causes volcanoes. However, since the magma can escape easily at the surface the volcano does not erupt with much force. Earthquakes are also found at constructive boundaries. A ...
... At a constructive plate boundary, two plates move apart. As the two plates move apart, magma rises up to fill the gap. This causes volcanoes. However, since the magma can escape easily at the surface the volcano does not erupt with much force. Earthquakes are also found at constructive boundaries. A ...
Plates - Hendoscience
... Normal Faults are formed when forces stretch the Earth’s crust Causes blocks of crust to break and tilt or slide down the broken surfaces of crust ...
... Normal Faults are formed when forces stretch the Earth’s crust Causes blocks of crust to break and tilt or slide down the broken surfaces of crust ...
Earth`s Interior Convection and the MantleSection 2 Summary
... convection currents in the mantle. A scientific theory is a well-tested concept that explains a wide range of observations. The theory of plate tectonics explains the formation, movement, and subduction of Earth's plates. The plates float on top of the asthenosphere. Convection currents rise in the ...
... convection currents in the mantle. A scientific theory is a well-tested concept that explains a wide range of observations. The theory of plate tectonics explains the formation, movement, and subduction of Earth's plates. The plates float on top of the asthenosphere. Convection currents rise in the ...
Convection homework
... creates pockets of circulation within the mantle called _, which are thought to be the force behind the movement of tectonic plates over the asthenosphere. A. magma flows C. convection cells B. density cells D. conduction points 12. Geologists trying to drill into the mantle would most likely drill ...
... creates pockets of circulation within the mantle called _, which are thought to be the force behind the movement of tectonic plates over the asthenosphere. A. magma flows C. convection cells B. density cells D. conduction points 12. Geologists trying to drill into the mantle would most likely drill ...
The Wadati-Benioff Zone
... 3) This particular plot, in general, shows a very specific tectonic feature. What is it called? Wadati-Benioff zone. This is the idea that earthquakes map out the shape of the downgoing oceanic plate. 4) At what horizontal location in this plot is there evidence for volcanic activity? (hint: magma m ...
... 3) This particular plot, in general, shows a very specific tectonic feature. What is it called? Wadati-Benioff zone. This is the idea that earthquakes map out the shape of the downgoing oceanic plate. 4) At what horizontal location in this plot is there evidence for volcanic activity? (hint: magma m ...
Name: Class: Date: Convergent Boundaries (All answers must be in
... The size of the Earth has not changed significantly during the past 600 million years, and very likely not since shortly after its formation 4.6 billion years ago. The Earth's unchanging size implies that the crust must be destroyed at about the same rate as it is being created, as Harry Hess surmis ...
... The size of the Earth has not changed significantly during the past 600 million years, and very likely not since shortly after its formation 4.6 billion years ago. The Earth's unchanging size implies that the crust must be destroyed at about the same rate as it is being created, as Harry Hess surmis ...
CHAPTER 1 THE TECTONIC CYCLE
... 1. Who proposed the Theory of Plate Tectonics? 2. What is the main idea of this theory? 3. What causes the plates of the earth to move? 4. What causes magma to move in the mantle? 5. What was Pangea? 6. What proof do we have that the continents of the earth were once all ...
... 1. Who proposed the Theory of Plate Tectonics? 2. What is the main idea of this theory? 3. What causes the plates of the earth to move? 4. What causes magma to move in the mantle? 5. What was Pangea? 6. What proof do we have that the continents of the earth were once all ...
Plate Tectonics
... • Harry Hess formulated the idea of sea floor spreading in 1962. • Sea Floor Spreading Theory- idea that the seafloor moves and carries the continents with it. • Caused by divergent boundaries moving apart and allowing the liquid like asthenosphere to move upward and cool creating new oceanic crust. ...
... • Harry Hess formulated the idea of sea floor spreading in 1962. • Sea Floor Spreading Theory- idea that the seafloor moves and carries the continents with it. • Caused by divergent boundaries moving apart and allowing the liquid like asthenosphere to move upward and cool creating new oceanic crust. ...
PPT - Chapter 2: Plate Tectonics & The Ocean Floor
... arc forms parallel to the trench. Ex: Cascade & Andes Mountains ...
... arc forms parallel to the trench. Ex: Cascade & Andes Mountains ...
Questions
... aesthenosphere, they interact among each other. The result of these interactions is the existence of 3 types of boundaries: ...
... aesthenosphere, they interact among each other. The result of these interactions is the existence of 3 types of boundaries: ...
Interactive Plate Tectonics - Fredericksburg City Schools
... oozes up from the mantle to fill in the space between the plates, forming a raised ridge called a mid-ocean ridge. The magma also spreads outward, forming new ocean floor and new oceanic crust. As the seafloor spreads apart explain how a rift is formed and what features are associated with it. Make ...
... oozes up from the mantle to fill in the space between the plates, forming a raised ridge called a mid-ocean ridge. The magma also spreads outward, forming new ocean floor and new oceanic crust. As the seafloor spreads apart explain how a rift is formed and what features are associated with it. Make ...
Dynamic Earth Processes
... plates crash together the form subduction zones (in which the more dense oceanic crust dives under the less dense continental crust) at which volcanic arcs, ocean trench, earthquakes and mountain ranges occur. 3. Transform plate boundaries: Two plates move laterally (Parallel slip) past each other. ...
... plates crash together the form subduction zones (in which the more dense oceanic crust dives under the less dense continental crust) at which volcanic arcs, ocean trench, earthquakes and mountain ranges occur. 3. Transform plate boundaries: Two plates move laterally (Parallel slip) past each other. ...
Unit 3 Vocabulary
... Plastic - capable of being molded or changing shape Plate tectonics - theory that Earth’s surface is made of rock plates that move with respect to each other Ridge push - force created by rising mantle of ocean ridges that creates potential for plates to move away from the ridge Slab pull – force cr ...
... Plastic - capable of being molded or changing shape Plate tectonics - theory that Earth’s surface is made of rock plates that move with respect to each other Ridge push - force created by rising mantle of ocean ridges that creates potential for plates to move away from the ridge Slab pull – force cr ...
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.