DATASHEETforHANDOUTBWITHANSWERS
... 1. What happens when a tectonic plate gets subducted? The lighter less dense plate goes over the top; the colder denser plate bends and slides under and plunges deeper into the mantle. 2. Name a specific location on Earth where this kind of boundary activity takes place. Andes Mountains in South Ame ...
... 1. What happens when a tectonic plate gets subducted? The lighter less dense plate goes over the top; the colder denser plate bends and slides under and plunges deeper into the mantle. 2. Name a specific location on Earth where this kind of boundary activity takes place. Andes Mountains in South Ame ...
Chapter 3 - Perry Local Schools
... – Continents fit together like pieces of jigsaw puzzle – One supercontinent - Pangaea – Laurasia and Gondwanaland ...
... – Continents fit together like pieces of jigsaw puzzle – One supercontinent - Pangaea – Laurasia and Gondwanaland ...
The modern picture of plate tectonics
... The Hawaiian chain is much longer than the islands in the State of Hawaii. Its “dogleg” results from the Pacific Plate changing direction as it moved over the hot spot. ...
... The Hawaiian chain is much longer than the islands in the State of Hawaii. Its “dogleg” results from the Pacific Plate changing direction as it moved over the hot spot. ...
Earth`s Layers
... – This difference in temperature sets up a convection current which is responsible for the cracking and moving of the tectonic plates. ...
... – This difference in temperature sets up a convection current which is responsible for the cracking and moving of the tectonic plates. ...
Earth`s Layers
... – This difference in temperature sets up a convection current which is responsible for the cracking and moving of the tectonic plates. ...
... – This difference in temperature sets up a convection current which is responsible for the cracking and moving of the tectonic plates. ...
Moving Earth - Michigan Department of Education Technology
... Oceanic plates are created at mid-ocean ridges by magmatic activity and cooled until they sink back into the Earth at subduction zones. At some localities, plates slide by each other. Mountain belts are formed both by continental collision and as a result of subduction. The outward flow of heat from ...
... Oceanic plates are created at mid-ocean ridges by magmatic activity and cooled until they sink back into the Earth at subduction zones. At some localities, plates slide by each other. Mountain belts are formed both by continental collision and as a result of subduction. The outward flow of heat from ...
The Structure of the Earth and Plate Tectonics
... subducts underneath the continental lithosphere • Oceanic lithosphere heats and dehydrates as it subsides • The melt rises forming volcanism • E.g. The Andes ...
... subducts underneath the continental lithosphere • Oceanic lithosphere heats and dehydrates as it subsides • The melt rises forming volcanism • E.g. The Andes ...
Plate Tectonics 1
... • Depth at 660-2900 km beneath Earth’s surface • More rigid layer • Rocks are very hot and capable of a gradual ...
... • Depth at 660-2900 km beneath Earth’s surface • More rigid layer • Rocks are very hot and capable of a gradual ...
Section 17.3 Theory of Plate Tectonics
... F. Theory provided answers to the 2 flaws of Wegener’s continental drift hypothesis Seafloor spreading caused the landmasses to move Landmasses didn’t shatter because they weren’t plowing through the ocean crust. Rather, the ocean floor & continents moved together. Section 17.3 Theory of Plate Tec ...
... F. Theory provided answers to the 2 flaws of Wegener’s continental drift hypothesis Seafloor spreading caused the landmasses to move Landmasses didn’t shatter because they weren’t plowing through the ocean crust. Rather, the ocean floor & continents moved together. Section 17.3 Theory of Plate Tec ...
Earth Science Vocab
... Convection current- a circulation pattern in which material is heated and rises in one area, then cools and sinks in another area, flowing in a continuous loop ...
... Convection current- a circulation pattern in which material is heated and rises in one area, then cools and sinks in another area, flowing in a continuous loop ...
Volcanoes - kcpe-kcse
... Spanning Geologic Time • Continental Drift – Alfred Wegener, etc. – International Geophysical Year research ...
... Spanning Geologic Time • Continental Drift – Alfred Wegener, etc. – International Geophysical Year research ...
01 - Middletown Public Schools
... 4. List the three layers of the Earth, based on their chemical composition. _______________________________________________________________________ _______________________________________________________________________ 5. What three elements make up most of the Earth’s crust? ______________________ ...
... 4. List the three layers of the Earth, based on their chemical composition. _______________________________________________________________________ _______________________________________________________________________ 5. What three elements make up most of the Earth’s crust? ______________________ ...
Earth Structures Day two plates
... ▪ Their evidence comes from the rocks at the Earth’s surface. ▪ Layers of sedimentary rocks provide clues to changes that were taking place at the time the layers were forming. ...
... ▪ Their evidence comes from the rocks at the Earth’s surface. ▪ Layers of sedimentary rocks provide clues to changes that were taking place at the time the layers were forming. ...
Gram Cracker Lab ppt
... transforming boundaries. An example would be the transforming boundaries in California, they are sliding past each other. ...
... transforming boundaries. An example would be the transforming boundaries in California, they are sliding past each other. ...
Power Notes –Plate Tectonics
... • The _______________ ranges are called mid-ocean ridges. When the mid-ocean ridge actually builds up enough height to extend above the water’s ____________, it forms an island. Iceland is an example of such an island. Located at a ________________ plate boundary between the North American and Europ ...
... • The _______________ ranges are called mid-ocean ridges. When the mid-ocean ridge actually builds up enough height to extend above the water’s ____________, it forms an island. Iceland is an example of such an island. Located at a ________________ plate boundary between the North American and Europ ...
Chapter 7 Review Test - Bismarck Public Schools
... 14. Which of these did NOT provide evidence for continental drift? a. sea-floor spreading c. the fossil record b. oceanic plate theory d. magnetic reversals ...
... 14. Which of these did NOT provide evidence for continental drift? a. sea-floor spreading c. the fossil record b. oceanic plate theory d. magnetic reversals ...
Sedimentary Rocks - McGraw Hill Higher Education
... Earth formed 4.7 billion years ago Current landforms are often millions of years old Early 20th century work by geologist Alfred Wegener on continental drift helped to explain how landforms developed over time ...
... Earth formed 4.7 billion years ago Current landforms are often millions of years old Early 20th century work by geologist Alfred Wegener on continental drift helped to explain how landforms developed over time ...
SC.D.1.4.2 - Escambia County School District
... B. Deep-sea trenches C. Crumpled mountains D. Island arc volcanoes ...
... B. Deep-sea trenches C. Crumpled mountains D. Island arc volcanoes ...
Geography 12
... and floats on the denser rocks of the asthenosphere Asthenosphere: the plastic (part solid, part liquid) layer of the upper mantle directly below the lithosphere that can flow slowly when put under constant pressure. Tectonics: the processes that deform the earth’s lithosphere and the rock structure ...
... and floats on the denser rocks of the asthenosphere Asthenosphere: the plastic (part solid, part liquid) layer of the upper mantle directly below the lithosphere that can flow slowly when put under constant pressure. Tectonics: the processes that deform the earth’s lithosphere and the rock structure ...
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.