Plate Tectonics Short Study Guide
... correct order. The seafloor contracts and sinks. Crust spreads along an ocean ridge and magma fills the gap that is created. New seafloor moves away from the ridge, cools, and becomes more dense than the material beneath it. Hot magma which is less dense than surrounding material, is forced toward t ...
... correct order. The seafloor contracts and sinks. Crust spreads along an ocean ridge and magma fills the gap that is created. New seafloor moves away from the ridge, cools, and becomes more dense than the material beneath it. Hot magma which is less dense than surrounding material, is forced toward t ...
Plate Tectonics
... • Oceanic-oceanic (trenches, volcanoes, earthquakes & island arcs) • Oceanic-continental (trenches, volcanoes, mt. ranges) • continent-continent (earthquakes, mountain ranges) ...
... • Oceanic-oceanic (trenches, volcanoes, earthquakes & island arcs) • Oceanic-continental (trenches, volcanoes, mt. ranges) • continent-continent (earthquakes, mountain ranges) ...
Plate Tectonics PPT
... process • Denser ocean slab pulled underneith continent • As it is pulled under, the oceanic crust begins to melt. • When crust begins to melt, magma rises • Magma rises to surface and creates volcanoes ...
... process • Denser ocean slab pulled underneith continent • As it is pulled under, the oceanic crust begins to melt. • When crust begins to melt, magma rises • Magma rises to surface and creates volcanoes ...
Earth`s Surface:
... Earth’s crust is composed of about a dozen large plates, with many smaller plates wedged between. Plate motion is responsible for a significant part of the Earth’s active surface geology. Volcanoes and earthquakes, expressions of Earth’s restless crust, are observed to be clustered along plate bound ...
... Earth’s crust is composed of about a dozen large plates, with many smaller plates wedged between. Plate motion is responsible for a significant part of the Earth’s active surface geology. Volcanoes and earthquakes, expressions of Earth’s restless crust, are observed to be clustered along plate bound ...
Document
... supercontinent, called Pangea, which divided ~ 200 Million years ago into Laurasia and Gondwanaland and later into the continents we see today (“continental drift”) ...
... supercontinent, called Pangea, which divided ~ 200 Million years ago into Laurasia and Gondwanaland and later into the continents we see today (“continental drift”) ...
Dynamic Planet Vocabulary - Schurger
... Inner Core The center of the earth, made of solid iron Convection The process when melted rock in the Asthenosphere heats, rises, Cell moves sideways, cools and sinks; will move plates as it moves sideways Tectonic Plate Large sheets of the lithospheric crust that are moved by convection cells Dynam ...
... Inner Core The center of the earth, made of solid iron Convection The process when melted rock in the Asthenosphere heats, rises, Cell moves sideways, cools and sinks; will move plates as it moves sideways Tectonic Plate Large sheets of the lithospheric crust that are moved by convection cells Dynam ...
Study Questions for the first week of ESS 210
... 2. How is plate tectonics related to the loss of Earth’s internal heat to space? 3. How do we measure the movement of the plates? 4. Describe the three types of plate boundaries. 5. What kind of plate boundary runs through California,? 6. What plate boundary is found in Washington? 7. Where on earth ...
... 2. How is plate tectonics related to the loss of Earth’s internal heat to space? 3. How do we measure the movement of the plates? 4. Describe the three types of plate boundaries. 5. What kind of plate boundary runs through California,? 6. What plate boundary is found in Washington? 7. Where on earth ...
Plate Tectonics
... Alternates normal (today’s field) and reversed field from years ago. Runs along the spreading seafloor ...
... Alternates normal (today’s field) and reversed field from years ago. Runs along the spreading seafloor ...
6th Grade Earth Science – Inside Earth Vocabulary 1. crust – the
... 9. compass – an instrument composed of a small, light-weight magnet called a needle, that is balanced on a frictionless bearing 10. continental drift – the hypothesis that the continents slowly move across the Earth’s surface 11. sea-floor spreading – the process by which molten material adds new cr ...
... 9. compass – an instrument composed of a small, light-weight magnet called a needle, that is balanced on a frictionless bearing 10. continental drift – the hypothesis that the continents slowly move across the Earth’s surface 11. sea-floor spreading – the process by which molten material adds new cr ...
Changes Within the Earth
... other surface features 2. Atmosphere – layer of air, water, and other substances above the surface 3. Hydrosphere – water in oceans, lakes, and rivers & under ground 4. Biosphere – world of plants, animals, and other living things that occupy the planet ...
... other surface features 2. Atmosphere – layer of air, water, and other substances above the surface 3. Hydrosphere – water in oceans, lakes, and rivers & under ground 4. Biosphere – world of plants, animals, and other living things that occupy the planet ...
1000
... will align with the Earth’s magnetic field, then cool and stay as a record of that time ...
... will align with the Earth’s magnetic field, then cool and stay as a record of that time ...
Plate Tectonics - Purdue University
... If oceans were the same age as the continents (billions of years), where was all the sediment? Oceanic crust not as old as continental crust. Magnetic maps of the seafloor made in the 1950s showed evidence of polarity reversals mirrored on both sides of a mid-ocean ridge. Harry Hess, Princeton, 1962 ...
... If oceans were the same age as the continents (billions of years), where was all the sediment? Oceanic crust not as old as continental crust. Magnetic maps of the seafloor made in the 1950s showed evidence of polarity reversals mirrored on both sides of a mid-ocean ridge. Harry Hess, Princeton, 1962 ...
Continental Drift and Seafloor
... Theory of Plate Tectonics • Earth’s crust and upper mantle are broken into sections called plates, they move on a plastic-like layer of the mantle. • Plates and upper mantle form the lithosphere. • Plastic-like layer below is called asthenosphere. ...
... Theory of Plate Tectonics • Earth’s crust and upper mantle are broken into sections called plates, they move on a plastic-like layer of the mantle. • Plates and upper mantle form the lithosphere. • Plastic-like layer below is called asthenosphere. ...
Chapter 33
... – Theory of plate tectonics: Earth’s outer shell, the lithosphere, is divided into plates that ride on the asthenosphere ...
... – Theory of plate tectonics: Earth’s outer shell, the lithosphere, is divided into plates that ride on the asthenosphere ...
Chapter 4
... 47)Why do magnetic stripes match on each side of a ridge? 48)How does evidence from drilling samples support sea floor spreading? 49) What are deep-ocean trenches? 50)What is subduction? 51)What happens at deep ocean trenches? 52)Where are the youngest rocks in the ocean floor found? Why? 53)Where a ...
... 47)Why do magnetic stripes match on each side of a ridge? 48)How does evidence from drilling samples support sea floor spreading? 49) What are deep-ocean trenches? 50)What is subduction? 51)What happens at deep ocean trenches? 52)Where are the youngest rocks in the ocean floor found? Why? 53)Where a ...
Review Sheet
... 9. Name the 3 most abundant gases found in magma. 10. Be able to compare & contrast the characteristics of felsic & mafic magmas. 11. Be able to label all plutons. 12. Know how to use a time-travel graph. 13. How many seismograph stations are needed to locate an Earthquake? ...
... 9. Name the 3 most abundant gases found in magma. 10. Be able to compare & contrast the characteristics of felsic & mafic magmas. 11. Be able to label all plutons. 12. Know how to use a time-travel graph. 13. How many seismograph stations are needed to locate an Earthquake? ...
Testing the plate tectonics model Evidence for the plate tectonics
... relative to continental crust) – denser (heavier) than continental crust ...
... relative to continental crust) – denser (heavier) than continental crust ...
Earth Science - Faustina Academy
... When plates move, they can move toward each other and converge They also pull apart or slide alongside one another When the plates interact, result of movement is seen at plate boundaries Divergent Boundary Boundary between two plates that are moving apart E.g., Mid-Atlantic Ridge E.g., Great ...
... When plates move, they can move toward each other and converge They also pull apart or slide alongside one another When the plates interact, result of movement is seen at plate boundaries Divergent Boundary Boundary between two plates that are moving apart E.g., Mid-Atlantic Ridge E.g., Great ...
Plate Tectonics Jeopardy 2016-17 - WITH
... 3B. Why are there volcanoes at these island arcs and also on SOME subduction zone mountains on shore, like near Seattle, and the West Coast of South America? ...
... 3B. Why are there volcanoes at these island arcs and also on SOME subduction zone mountains on shore, like near Seattle, and the West Coast of South America? ...
PLATETECTONICS-Slip,SlidnAway
... • Lithosphere composed of the crust and upper mantle forms the Earth’s tectonic plates ...
... • Lithosphere composed of the crust and upper mantle forms the Earth’s tectonic plates ...
Continental Drift
... once thought to move the Earth's plates along like a conveyor belt. Although the convection currents may still have some impact on the movement of the plates, the most current view is that the movement is caused more by the sinking of dense oceanic crust. As the oceanic crust ages, it becomes cooler ...
... once thought to move the Earth's plates along like a conveyor belt. Although the convection currents may still have some impact on the movement of the plates, the most current view is that the movement is caused more by the sinking of dense oceanic crust. As the oceanic crust ages, it becomes cooler ...
Document
... • Lithosphere composed of the crust and upper mantle forms the Earth’s tectonic plates ...
... • Lithosphere composed of the crust and upper mantle forms the Earth’s tectonic plates ...
Mantle Convection
... magma that rises from Earth’s interior. Even though ocean floors are continually spreading and new oceanic crust is continually being removed, Earth is not growing larger. While exploring the Pacific Ocean floor in the 1950s, scientists often found deep, narrow trenches quite near a continental coas ...
... magma that rises from Earth’s interior. Even though ocean floors are continually spreading and new oceanic crust is continually being removed, Earth is not growing larger. While exploring the Pacific Ocean floor in the 1950s, scientists often found deep, narrow trenches quite near a continental coas ...
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.