The Theory of Plate Tectonics Homework
... 4. Describe what happens when (a) two plates carrying oceanic crust collide, (b) two plates carrying continental crust collide, and (c) a plate carrying oceanic crust collides with a plate carrying continental crust. 5. Explain what force caused the movement of the continents from one supercontinent ...
... 4. Describe what happens when (a) two plates carrying oceanic crust collide, (b) two plates carrying continental crust collide, and (c) a plate carrying oceanic crust collides with a plate carrying continental crust. 5. Explain what force caused the movement of the continents from one supercontinent ...
What happens at tectonic plate boundaries?
... volcanic belt of mountains is formed at the continental plate margin Ex: Peru-Chile Trench ...
... volcanic belt of mountains is formed at the continental plate margin Ex: Peru-Chile Trench ...
Plate Motion
... Oceanic-Oceanic Convergence The denser oceanic plate is subducted Typically the older oceanic plate is denser due to longer time to cool ...
... Oceanic-Oceanic Convergence The denser oceanic plate is subducted Typically the older oceanic plate is denser due to longer time to cool ...
ppt
... Some of the largest features on Earth. 5km-2.6km deep. Roughly symmetrical in cross section. Thousands of kilometers wide. Volcanoes, earthquakes, hills and mountains. ...
... Some of the largest features on Earth. 5km-2.6km deep. Roughly symmetrical in cross section. Thousands of kilometers wide. Volcanoes, earthquakes, hills and mountains. ...
The Rock Cycle
... • The linear chains of volcanoes, deep canyons, plateaus, and large expense of monotonously flat plains are widely ...
... • The linear chains of volcanoes, deep canyons, plateaus, and large expense of monotonously flat plains are widely ...
Insert overline, title and author names here after formatting
... Humans have always been fascinated by the deep sea. Early sketches deeper than 7000 m (5). Cameron’s extraordinary feat shows that techof submarines in the 16th century led to the construction of the first un- nology has advanced to the point where a vehicle can safely transport its derwater vehicle ...
... Humans have always been fascinated by the deep sea. Early sketches deeper than 7000 m (5). Cameron’s extraordinary feat shows that techof submarines in the 16th century led to the construction of the first un- nology has advanced to the point where a vehicle can safely transport its derwater vehicle ...
Plate Tectonics and Layers of the Earth Essential Vocabulary
... Around inner core liquid iron/nickel Layer between crust and core Thin solid outmost layer of the Earth Made of the crust and upper rigid mantle Hot solid flowing rock on which the plates move Strong lower mantle just above the core Pieces of lithosphere that move Theory that continental have change ...
... Around inner core liquid iron/nickel Layer between crust and core Thin solid outmost layer of the Earth Made of the crust and upper rigid mantle Hot solid flowing rock on which the plates move Strong lower mantle just above the core Pieces of lithosphere that move Theory that continental have change ...
20.1 Reading Guide
... 4. What percent of the world’s water is not in the ocean? 5. What fraction is the ocean compared to the mass of the whole earth? 6. What are the three major oceans? 7. Why isn’t the Arctic Ocean considered an ocean like the others? ...
... 4. What percent of the world’s water is not in the ocean? 5. What fraction is the ocean compared to the mass of the whole earth? 6. What are the three major oceans? 7. Why isn’t the Arctic Ocean considered an ocean like the others? ...
Radiolarian biostratigraphy of the Conset Bay Series, Barbados
... Barbados, indicates that the sequence extends from the Middle to the late Eocene. The oldest assemblages can be correlated with the middle of the Dictyoprora mongolfieri zone, while the upper part of the sequence lies within the Late Eocene Thyrsocyrtis bromia zone. Although the sequence appears to ...
... Barbados, indicates that the sequence extends from the Middle to the late Eocene. The oldest assemblages can be correlated with the middle of the Dictyoprora mongolfieri zone, while the upper part of the sequence lies within the Late Eocene Thyrsocyrtis bromia zone. Although the sequence appears to ...
OCN100--Study Guide
... ______ meters; this makes the average ocean depth _______ times deeper than land is high. The deepest spot in the ocean is the ____________________; its depth is _______ meters. Including above and below sea level portions, the tallest mountain on earth is ___________. Be able to briefly describe th ...
... ______ meters; this makes the average ocean depth _______ times deeper than land is high. The deepest spot in the ocean is the ____________________; its depth is _______ meters. Including above and below sea level portions, the tallest mountain on earth is ___________. Be able to briefly describe th ...
DCA-geoscience-exam-3-study-guide-key
... 19. All igneous rocks begin as __magma____. 20. Heat and pressure inside the Earth's crust change rocks through this process which is called metamorphism____. 21. Which type of crust, continental or oceanic, is younger, thinner, and denser? oceanic crust 22. Most of the injuries and deaths due to ea ...
... 19. All igneous rocks begin as __magma____. 20. Heat and pressure inside the Earth's crust change rocks through this process which is called metamorphism____. 21. Which type of crust, continental or oceanic, is younger, thinner, and denser? oceanic crust 22. Most of the injuries and deaths due to ea ...
(comprised of the continental crust and oceanic crust).
... Geologists use the term lithosphere to mean an outer Earth zone, or shell, of rigid, brittle rock. It includes not only the crust, but also the cooler, upper part of the mantle that is composed of brittle rock. The rigid, brittle lithosphere rests on top of a soft, plastic underlayer named the asthe ...
... Geologists use the term lithosphere to mean an outer Earth zone, or shell, of rigid, brittle rock. It includes not only the crust, but also the cooler, upper part of the mantle that is composed of brittle rock. The rigid, brittle lithosphere rests on top of a soft, plastic underlayer named the asthe ...
fact finding answers
... 20. ALL OF THE TECTONIC PLATES HAVE names___, BUT NOT ALL OF THEM ARE THE SAME. 21. SOME PLATES HAVE AN ENTIRE ___continent_____ ON IT, SOME HAVE ONLY OCEANIC CRUST, AND OTHERS INCLUDE BOTH CONTINENTAL AND OCEANIC CRUST. 22. TECTONIC PLATES FLOAT ON THE __asthenosphere____________. 23. THE __plates_ ...
... 20. ALL OF THE TECTONIC PLATES HAVE names___, BUT NOT ALL OF THEM ARE THE SAME. 21. SOME PLATES HAVE AN ENTIRE ___continent_____ ON IT, SOME HAVE ONLY OCEANIC CRUST, AND OTHERS INCLUDE BOTH CONTINENTAL AND OCEANIC CRUST. 22. TECTONIC PLATES FLOAT ON THE __asthenosphere____________. 23. THE __plates_ ...
Plate Tectonic, Earthquakes, and Volcanoes Test Review
... Plate Tectonics Theory—Tectonic plates, including both continental and oceanic crusts, are moving because of convection currents below the crust. New crust is made at mid-ocean ridges and old crust is destroyed at subduction zones. ...
... Plate Tectonics Theory—Tectonic plates, including both continental and oceanic crusts, are moving because of convection currents below the crust. New crust is made at mid-ocean ridges and old crust is destroyed at subduction zones. ...
chapter 15A - plate tectonics 1
... the age of the oldest ocean crust was much younger than that of continental crust. – Recurring patterns of earthquakes and volcanoes in places such as the Circum-Pacific Belt and along the oceanic ridges. ...
... the age of the oldest ocean crust was much younger than that of continental crust. – Recurring patterns of earthquakes and volcanoes in places such as the Circum-Pacific Belt and along the oceanic ridges. ...
Ocean waves that wear away an island`s shoreline
... 7. In the asthenosphere, heat is transferred as soft rock flows slowly in cycles known as ____________________. 8. Wegner believed the continents had once been joined in one landmass called ____________________. 9. The theory of ____________________ states all the continents once were joined as a si ...
... 7. In the asthenosphere, heat is transferred as soft rock flows slowly in cycles known as ____________________. 8. Wegner believed the continents had once been joined in one landmass called ____________________. 9. The theory of ____________________ states all the continents once were joined as a si ...
Plate Tectonics Review Worksheet
... Plate Tectonics Review Worksheet 1. Continental Drift: A theory proposed by Alfred Wegner that said all continents were once joined 300 million years ago in a single land mass called Pangaea. Over time the continents moved to their present day locations. 2. What are four pieces of evidence for cont ...
... Plate Tectonics Review Worksheet 1. Continental Drift: A theory proposed by Alfred Wegner that said all continents were once joined 300 million years ago in a single land mass called Pangaea. Over time the continents moved to their present day locations. 2. What are four pieces of evidence for cont ...
Plate Tectonics Review Sheet
... landforms (mountains) - half of a mountain range was on South American and the other half was on Africa fossils, and climate - matched across continents sea-floor spreading - the process by which new sea floor forms when magma rises to the surface, solidifies and pushes the old sea floor away subduc ...
... landforms (mountains) - half of a mountain range was on South American and the other half was on Africa fossils, and climate - matched across continents sea-floor spreading - the process by which new sea floor forms when magma rises to the surface, solidifies and pushes the old sea floor away subduc ...
Seafloor notes
... deposits fill in valleys and create flat seafloor areas called ______________________________ ...
... deposits fill in valleys and create flat seafloor areas called ______________________________ ...
Abyssal plain
An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between 3000 and 6000 m. Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains cover more than 50% of the Earth’s surface. They are among the flattest, smoothest and least explored regions on Earth. Abyssal plains are key geologic elements of oceanic basins (the other elements being an elevated mid-ocean ridge and flanking abyssal hills). In addition to these elements, active oceanic basins (those that are associated with a moving plate tectonic boundary) also typically include an oceanic trench and a subduction zone.Abyssal plains were not recognized as distinct physiographic features of the sea floor until the late 1940s and, until very recently, none had been studied on a systematic basis. They are poorly preserved in the sedimentary record, because they tend to be consumed by the subduction process. The creation of the abyssal plain is the end result of spreading of the seafloor (plate tectonics) and melting of the lower oceanic crust. Magma rises from above the asthenosphere (a layer of the upper mantle) and as this basaltic material reaches the surface at mid-ocean ridges it forms new oceanic crust. This is constantly pulled sideways by spreading of the seafloor. Abyssal plains result from the blanketing of an originally uneven surface of oceanic crust by fine-grained sediments, mainly clay and silt. Much of this sediment is deposited by turbidity currents that have been channelled from the continental margins along submarine canyons down into deeper water. The remainder of the sediment is composed chiefly of pelagic sediments. Metallic nodules are common in some areas of the plains, with varying concentrations of metals, including manganese, iron, nickel, cobalt, and copper. These nodules may provide a significant resource for future mining ventures.Owing in part to their vast size, abyssal plains are currently believed to be a major reservoir of biodiversity. The abyss also exerts significant influence upon ocean carbon cycling, dissolution of calcium carbonate, and atmospheric CO2 concentrations over timescales of 100–1000 years. The structure and function of abyssal ecosystems are strongly influenced by the rate of flux of food to the seafloor and the composition of the material that settles. Factors such as climate change, fishing practices, and ocean fertilization are expected to have a substantial effect on patterns of primary production in the euphotic zone. This will undoubtedly impact the flux of organic material to the abyss in a similar manner and thus have a profound effect on the structure, function and diversity of abyssal ecosystems.