Introduccon to PLATE TECTONICS
... – Originally proposed in the late 1960s – Included new understanding of the seafloor and explana)on of driving force – Describes lithosphere as being broken into plates that are in mo)on – Explains origin and loca)ons of such things as volcanoes, fault zones and mountain belts ...
... – Originally proposed in the late 1960s – Included new understanding of the seafloor and explana)on of driving force – Describes lithosphere as being broken into plates that are in mo)on – Explains origin and loca)ons of such things as volcanoes, fault zones and mountain belts ...
Tectonic plates
... Essential Questions 1. What are the different layers of the Earth? 2. What properties describe each layer? 3. How was the continental drift theory developed? 4. What evidence exists for plate movement from the sea floor? 5. How did scientists develop the theory of plate tectonics? ...
... Essential Questions 1. What are the different layers of the Earth? 2. What properties describe each layer? 3. How was the continental drift theory developed? 4. What evidence exists for plate movement from the sea floor? 5. How did scientists develop the theory of plate tectonics? ...
GEOLOGY Test Study Guide
... ______ 1. What is the outermost layer of the Earth called?. ______ 2. What is the liquid layer of the Earth’s core called? ______ 3. In a reverse fault, where does the hanging wall move relative to the ______ 4. In a normal fault, where does the hanging wall move relative to the ______ 5. What is th ...
... ______ 1. What is the outermost layer of the Earth called?. ______ 2. What is the liquid layer of the Earth’s core called? ______ 3. In a reverse fault, where does the hanging wall move relative to the ______ 4. In a normal fault, where does the hanging wall move relative to the ______ 5. What is th ...
Sinking Slabs and Convection Connections
... if any, correlation between hot spots and plate direction. For a relatively small number of hot spots on spreading ridges, the plate moves away from the hot spots (e.g., Iceland, Galapagos, or Afar at the base of the Red Sea). Many more are distributed beneath oceanic plates or continents. Geologic ...
... if any, correlation between hot spots and plate direction. For a relatively small number of hot spots on spreading ridges, the plate moves away from the hot spots (e.g., Iceland, Galapagos, or Afar at the base of the Red Sea). Many more are distributed beneath oceanic plates or continents. Geologic ...
deep-ocean trench
... They felt it would have been impossible for huge solid chunks of land to have plowed through the ocean floor. ...
... They felt it would have been impossible for huge solid chunks of land to have plowed through the ocean floor. ...
Plate Tectonics Scavenger Hunt
... Distribute STUDENT WORKSHEET: “Plate Tectonics Scavenger Hunt.” Ask students to complete the worksheet by navigating through the multimedia files as directed. ...
... Distribute STUDENT WORKSHEET: “Plate Tectonics Scavenger Hunt.” Ask students to complete the worksheet by navigating through the multimedia files as directed. ...
Landforms provide evidence of change
... the North American Plate to fold and break and some of the parts were pushed up and over each other, creating the Rocky Mountains. The Rocky Mountains are complex mountains. The Structure and Development of Fold and Fault Mountains Sedimentary rock under slow, gradual pressure can fold (bend like pl ...
... the North American Plate to fold and break and some of the parts were pushed up and over each other, creating the Rocky Mountains. The Rocky Mountains are complex mountains. The Structure and Development of Fold and Fault Mountains Sedimentary rock under slow, gradual pressure can fold (bend like pl ...
Pangaea (240 Myr ago) - University of Hawaii
... Expressed through the 1) Overview plate tectonics & Earth’s major forms of volcanism Creation of the Philippine Archipelago 2) Summarize origin & evolution of the Philippine Archipelago ...
... Expressed through the 1) Overview plate tectonics & Earth’s major forms of volcanism Creation of the Philippine Archipelago 2) Summarize origin & evolution of the Philippine Archipelago ...
contents - Less Stress More Success
... The crust is broken into plates. These plates move. They separate, collide and slide past each other. The plates are carried about by convection currents in the mantle. ...
... The crust is broken into plates. These plates move. They separate, collide and slide past each other. The plates are carried about by convection currents in the mantle. ...
Continental Drift and Sea Floor Spreading Notes
... puzzle (Africa and South America) -matching rock layers at the edge of the ...
... puzzle (Africa and South America) -matching rock layers at the edge of the ...
Earth Surfaces Chapter 1 Study Guide The inner core is . A. layers
... 14. The outermost layer of Earth is called the _______________. M. asthenosphere 15. Mantle material rises in convection currents because heated materials N. conduction become ____________ dense. 16. When geologists study Earth’s interior, they rely on ________ methods O. indirect such as seismic wa ...
... 14. The outermost layer of Earth is called the _______________. M. asthenosphere 15. Mantle material rises in convection currents because heated materials N. conduction become ____________ dense. 16. When geologists study Earth’s interior, they rely on ________ methods O. indirect such as seismic wa ...
Warm- up Question Summarize: What you know about Continental
... plates. 3 types of collisions One type is a subduction, in which one plate slips under another forming a deep ocean trench. Second, two continental plates collide and form tall mountain ranges. Third, two ocean plates collide and form a ocean trench and island arch along the edge ...
... plates. 3 types of collisions One type is a subduction, in which one plate slips under another forming a deep ocean trench. Second, two continental plates collide and form tall mountain ranges. Third, two ocean plates collide and form a ocean trench and island arch along the edge ...
colliding continents video ws
... 4. The lighter elements, including ______________ and _______________ rise towards the surface and erupt in volcanoes as molten rock. 5. Most scientists believe that the water that formed our oceans came from many, many ________________ , which contained water. 6. How old was Earth believed to be wh ...
... 4. The lighter elements, including ______________ and _______________ rise towards the surface and erupt in volcanoes as molten rock. 5. Most scientists believe that the water that formed our oceans came from many, many ________________ , which contained water. 6. How old was Earth believed to be wh ...
constructive and destructive forces 2015
... The higher the slope of a stream or river, the more erosion will occur. (gradient) The more water in a river, the more erosion will occur. (discharge) ...
... The higher the slope of a stream or river, the more erosion will occur. (gradient) The more water in a river, the more erosion will occur. (discharge) ...
earth layers and plates 2016
... 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 ...
Convection Currents - Effingham County Schools
... lithosphere and has a different composition under land than it does on the ocean floor. ...
... lithosphere and has a different composition under land than it does on the ocean floor. ...
oceanic crust - Duluth High School
... Three types of boundaries between plates • Divergent plates • Oceanic ridge and continental rift valleys • EX: Mid-Atlantic Ridge, East Pacific Rise, East African Great Rift Valley • Convergent plates • Subduction, subduction zone • Trench • EX: Cascade Mt Range (Ca to Wa- Mt. St. Helens) • Transf ...
... Three types of boundaries between plates • Divergent plates • Oceanic ridge and continental rift valleys • EX: Mid-Atlantic Ridge, East Pacific Rise, East African Great Rift Valley • Convergent plates • Subduction, subduction zone • Trench • EX: Cascade Mt Range (Ca to Wa- Mt. St. Helens) • Transf ...
Activity 47: Spreading Plates
... 2. In this activity, it took at least one million years for a narrow valley to from and it took 5 million years to observe bigger changes, such as a wider valley and the formation of the ...
... 2. In this activity, it took at least one million years for a narrow valley to from and it took 5 million years to observe bigger changes, such as a wider valley and the formation of the ...
Chapter 21 Guided Reading
... of South America and the western coast of Africa appeared to fit together like pieces of a _____________. Wegener found that several other continents’ coastlines also seemed to fit together. He pieced all the continents together to form a ________________________ that he called ...
... of South America and the western coast of Africa appeared to fit together like pieces of a _____________. Wegener found that several other continents’ coastlines also seemed to fit together. He pieced all the continents together to form a ________________________ that he called ...
Earth`s Interior
... The annual change in ocean currents and ocean temperatures The fact that the outer core is molten The fact that rocks and fossils of similar origin show up on different, now separated ...
... The annual change in ocean currents and ocean temperatures The fact that the outer core is molten The fact that rocks and fossils of similar origin show up on different, now separated ...
Alfred Wegener What was the Evidence?
... Harold Jeffreys (Cambridge U., 1924) “It is an impossible hypothesis! How can a small force not only produce indefinitely great movement, but overcome a force many times greater acting in the opposite direction at the same time?” ...
... Harold Jeffreys (Cambridge U., 1924) “It is an impossible hypothesis! How can a small force not only produce indefinitely great movement, but overcome a force many times greater acting in the opposite direction at the same time?” ...
DYNAMIC EARTH NOTES
... could have fit in the same puzzle. (Ex: Coal in Antartica) d. Similar rock types & structures: Some mountain ranges look as if they would have been a part of the same range before the continents separated. (EX: Appalachian Mts correlate with Mt’s in Africa and Europe) II. PLATE TECTONICS: MANY SCIEN ...
... could have fit in the same puzzle. (Ex: Coal in Antartica) d. Similar rock types & structures: Some mountain ranges look as if they would have been a part of the same range before the continents separated. (EX: Appalachian Mts correlate with Mt’s in Africa and Europe) II. PLATE TECTONICS: MANY SCIEN ...
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.