study guide – unit 9 – plate tectonics
... magnetic reversal: magnetic minerals create same pattern on both sides, Earth’s polarity has reversed ...
... magnetic reversal: magnetic minerals create same pattern on both sides, Earth’s polarity has reversed ...
Study Guide
... 1. Know the answers to all of the questions you answered in the journal. Which are listed below. a. Provide definitions for the following terms: core, crust, mantle, magma, pangea, ring of fire, lithospheric plates, igneous rocks, tsunami, fault, and earthquake. b. Briefly discuss the Theory of Plat ...
... 1. Know the answers to all of the questions you answered in the journal. Which are listed below. a. Provide definitions for the following terms: core, crust, mantle, magma, pangea, ring of fire, lithospheric plates, igneous rocks, tsunami, fault, and earthquake. b. Briefly discuss the Theory of Plat ...
21. Look over this graph of seismic activity. Make 3 observations
... 6. Which of the Earth’s layers make up the lithosphere? 7. The movement of the Pacific Plate causes a large number of _____ ______ and ____________. 8. The Pacific Plate is also called the _________, 9. What happens during the process of sea floor spreading? 10. What are the different plate boundari ...
... 6. Which of the Earth’s layers make up the lithosphere? 7. The movement of the Pacific Plate causes a large number of _____ ______ and ____________. 8. The Pacific Plate is also called the _________, 9. What happens during the process of sea floor spreading? 10. What are the different plate boundari ...
Unit 3: Lesson 2: Theory of Plate Tectonics
... Divergent Plate Boundaries Two plates that move away from each other Forms a mid-ocean ridge or rift valley ...
... Divergent Plate Boundaries Two plates that move away from each other Forms a mid-ocean ridge or rift valley ...
Plate Tectonics Notes
... "pertaining to building”) is a scientific theory that describes the large-scale motion of Earth's lithosphere on a molten asthenosphere, due to convection currents caused by the transfer of heat from the Earth’s core. • Plate motions range up to a typical 10– 40 mm/year (Mid-Atlantic Ridge; about as ...
... "pertaining to building”) is a scientific theory that describes the large-scale motion of Earth's lithosphere on a molten asthenosphere, due to convection currents caused by the transfer of heat from the Earth’s core. • Plate motions range up to a typical 10– 40 mm/year (Mid-Atlantic Ridge; about as ...
Geography and Landforms Graffiti
... mantle, the rocky inner layer above the core. The plates act like a hard and rigid shell compared to Earth's mantle. This strong outer layer is called the lithosphere. Developed from the 1950s through the 1970s, plate tectonics is the modern version of continental drift, a theory first proposed by s ...
... mantle, the rocky inner layer above the core. The plates act like a hard and rigid shell compared to Earth's mantle. This strong outer layer is called the lithosphere. Developed from the 1950s through the 1970s, plate tectonics is the modern version of continental drift, a theory first proposed by s ...
Plate Tectonics – Practice Questions and Answers
... 11. mid-oceanic ridges or divergent margins 12. mid-oceanic ridges and hot spots 13. transform 14. divergent 15. Subduction is when one lithospheric plate descends beneath another. 16. As the subducted slab descends to about 100 km water and other volatiles are driven off. The water and volatiles mo ...
... 11. mid-oceanic ridges or divergent margins 12. mid-oceanic ridges and hot spots 13. transform 14. divergent 15. Subduction is when one lithospheric plate descends beneath another. 16. As the subducted slab descends to about 100 km water and other volatiles are driven off. The water and volatiles mo ...
Document
... Because the sea floor is spreading away from the center, rocks which are equidistant but on opposite sides of the ridge are the same age. Rock B is the same age as rock D. Rock A is the same age as rock E. The oldest rocks are found at the edges of the continents. ...
... Because the sea floor is spreading away from the center, rocks which are equidistant but on opposite sides of the ridge are the same age. Rock B is the same age as rock D. Rock A is the same age as rock E. The oldest rocks are found at the edges of the continents. ...
Continental Drift and Seafloor Spreading
... 4. Tropical plant fossils that were found on an island in Artic Ocean! (Scratches in rocks made by glaciers in South Africa) The continental drift theory was NOT accepted because Wegener could not explain HOW the continents were moving/drifted apart. ...
... 4. Tropical plant fossils that were found on an island in Artic Ocean! (Scratches in rocks made by glaciers in South Africa) The continental drift theory was NOT accepted because Wegener could not explain HOW the continents were moving/drifted apart. ...
Science Study Guide What is the hot molten rock
... What is the vibration the spreads out away from a focus when an earthquake happens? ...
... What is the vibration the spreads out away from a focus when an earthquake happens? ...
Continental Drift and Plate Tectonics
... 2. A space is created where magma comes through, forming new crust. The creation of new ocean floor is called seafloor spreading. 3. They build under sea mountain ranges (example: Mid-Atlantic Ridge which is longest mountain range in world) ...
... 2. A space is created where magma comes through, forming new crust. The creation of new ocean floor is called seafloor spreading. 3. They build under sea mountain ranges (example: Mid-Atlantic Ridge which is longest mountain range in world) ...
Plate Tect with graphic organizer
... Pieces of Earth’s lithosphere are in constant, slow motion, driven by convection currents in the mantle. True or False: The theory of plate tectonics explains the formation, movement, and subduction of Earth’s plates. True ...
... Pieces of Earth’s lithosphere are in constant, slow motion, driven by convection currents in the mantle. True or False: The theory of plate tectonics explains the formation, movement, and subduction of Earth’s plates. True ...
Lecture 2: Dynamic Earth: Plate Tectonics
... • The theory was put together in late 1960s and early 1970s.The lithosphere is broken into a dozen of rigid blocks "plates", which are moving continuously. • Seven major plates: North American, South American, Pacific, African, Eurasian, Australian, and Antarctic. ...
... • The theory was put together in late 1960s and early 1970s.The lithosphere is broken into a dozen of rigid blocks "plates", which are moving continuously. • Seven major plates: North American, South American, Pacific, African, Eurasian, Australian, and Antarctic. ...
Lecture 5 Review Sheet
... Explain the significance of the 1855, 1911, and 1977 bathymetry maps. What do they show, how are they different? How was the lack of sediment in the oceans problematic to oceanographers and geologists at the time? What important correlation was discovered when the navy measured heat flow through the ...
... Explain the significance of the 1855, 1911, and 1977 bathymetry maps. What do they show, how are they different? How was the lack of sediment in the oceans problematic to oceanographers and geologists at the time? What important correlation was discovered when the navy measured heat flow through the ...
Geology Test Study Guide Answers
... 3. What is sea floor spreading, where does it occur, and what evidence supports this concept? Sea floor spreading happens at the mid ocean ridge. Magma from the mantle pushes through the sea floor causes the plates to diverge and spread apart. The evidence to support sea floor spreading is the age ...
... 3. What is sea floor spreading, where does it occur, and what evidence supports this concept? Sea floor spreading happens at the mid ocean ridge. Magma from the mantle pushes through the sea floor causes the plates to diverge and spread apart. The evidence to support sea floor spreading is the age ...
108-SeaFloor Spreading
... • No Way, It has to go somewhere, and usually it dives under a continent! • Oceanic Crust is Denser than Continental Crust – so it sinks under the continent. • This process is called Subduction and makes the Deep Ocean Trenches ...
... • No Way, It has to go somewhere, and usually it dives under a continent! • Oceanic Crust is Denser than Continental Crust – so it sinks under the continent. • This process is called Subduction and makes the Deep Ocean Trenches ...
OCEAN BASINS, GEOGRAPHY AND GEOLOGY OF THE OCEANS
... formation that differ in distance away from the ridge. Fossils and rock types on different continents that match up. SEA FLOOR SPREADING Spreading centers occur at ocean ridge and the formation of crust occurs. Energy comes from molten core giant heat engine driving plate movement through convection ...
... formation that differ in distance away from the ridge. Fossils and rock types on different continents that match up. SEA FLOOR SPREADING Spreading centers occur at ocean ridge and the formation of crust occurs. Energy comes from molten core giant heat engine driving plate movement through convection ...
plate tectonics
... up with a theory that molten material from Earth’s mantle is forced upward to the surface at midocean ridges and cools to form new sea floor. Movement in Earth’s mantle forces sections of crust apart, allowing magma to flow onto Earth’s surface and form new crust. Therefore, the Atlantic Ocean is wi ...
... up with a theory that molten material from Earth’s mantle is forced upward to the surface at midocean ridges and cools to form new sea floor. Movement in Earth’s mantle forces sections of crust apart, allowing magma to flow onto Earth’s surface and form new crust. Therefore, the Atlantic Ocean is wi ...
The Theory of Plate Tectonics On a separate sheet of paper
... 7. Breaks in Earth’s crust where rocks have slipped past each other are called ...
... 7. Breaks in Earth’s crust where rocks have slipped past each other are called ...
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.