two abstracts
... Department of geology and mineral resources engineering, NTNU, Trondheim, Norway . In modern plate tectonic theory, continents move with lithospheric plates across the surface of the globe. Old material is consumed at the leading edges of moving plates, and new material is created at the trailing ed ...
... Department of geology and mineral resources engineering, NTNU, Trondheim, Norway . In modern plate tectonic theory, continents move with lithospheric plates across the surface of the globe. Old material is consumed at the leading edges of moving plates, and new material is created at the trailing ed ...
Outer Core
... The magma is cooled and forms new ocean floor. The volcanic country of Iceland, which straddles the Mid-Atlantic Ridge, offers scientists a natural laboratory for studying on land the processes also occurring along the submerged parts of a spreading ridge. Iceland is splitting along the spreading ce ...
... The magma is cooled and forms new ocean floor. The volcanic country of Iceland, which straddles the Mid-Atlantic Ridge, offers scientists a natural laboratory for studying on land the processes also occurring along the submerged parts of a spreading ridge. Iceland is splitting along the spreading ce ...
hawaiian-plate-movement
... lithosphere are known as lithospheric plates. The plates float across the surface of the hot, soft, flexible layer of mantle that lies beneath them. This layer is called the asthenosphere. Most of the Earth’s volcanoes are found at the boundaries of the plates. But a few volcanoes are found, surpris ...
... lithosphere are known as lithospheric plates. The plates float across the surface of the hot, soft, flexible layer of mantle that lies beneath them. This layer is called the asthenosphere. Most of the Earth’s volcanoes are found at the boundaries of the plates. But a few volcanoes are found, surpris ...
Air Mass Classifications
... a) Low-velocity Zone - between 100-250km; P & S waves decrease in velocity; possibly due to molten rock; a.k.a. asthenosphere (weak ball), above it is the lithosphere (crust & upper mantle) & below is the mesosphere (rest of mantle) 3) Core - 1/6 Earth’s volume & 1/3 mass; radius = 3486km (larger th ...
... a) Low-velocity Zone - between 100-250km; P & S waves decrease in velocity; possibly due to molten rock; a.k.a. asthenosphere (weak ball), above it is the lithosphere (crust & upper mantle) & below is the mesosphere (rest of mantle) 3) Core - 1/6 Earth’s volume & 1/3 mass; radius = 3486km (larger th ...
Inside the Earth - Londonderry NH School District
... • Parts are semimolten (silly putty) • 1800 miles thick • Mantle rock is more dense than crustal rock • Flows in sluggish currents • Between crust and outer core ...
... • Parts are semimolten (silly putty) • 1800 miles thick • Mantle rock is more dense than crustal rock • Flows in sluggish currents • Between crust and outer core ...
Ocean Features Abyssal currents Abyssal plains
... other undersea geomorphologic features such as the continental shelves, the deep ocean trenches, and the undersea mountain ranges (for example, the mid-Atlantic ridge) which are not considered to be part of the ocean basins; while hydrologically, oceanic basins include the flanking continental shelv ...
... other undersea geomorphologic features such as the continental shelves, the deep ocean trenches, and the undersea mountain ranges (for example, the mid-Atlantic ridge) which are not considered to be part of the ocean basins; while hydrologically, oceanic basins include the flanking continental shelv ...
Chap02
... • This rift separated Pangaea into two large continents, Laurasia and Gondwana • This rift was the beginning on the MidAtlantic Ridge ...
... • This rift separated Pangaea into two large continents, Laurasia and Gondwana • This rift was the beginning on the MidAtlantic Ridge ...
psc 201 ch3 hw W11.cwk (WP)
... 18. In 1965 Matthews and Vine at Cambridge, England published geologic evidence that new seafloor was formed along the Mid-Atlantic Ridge. This convinced geologists that the hypothesis which later came to be called ‘plate tectonics’ was correct. What type of geologic evidence did Matthews and Vine p ...
... 18. In 1965 Matthews and Vine at Cambridge, England published geologic evidence that new seafloor was formed along the Mid-Atlantic Ridge. This convinced geologists that the hypothesis which later came to be called ‘plate tectonics’ was correct. What type of geologic evidence did Matthews and Vine p ...
Plates on the Move
... insight to the mechanism for how the continents moved. • The magma which pushes up at the mid-ocean ridge provides the new land pushing the plates, and the subduction zones gobble up the land on the the other side of the plates. The mechanism was convection currents! ...
... insight to the mechanism for how the continents moved. • The magma which pushes up at the mid-ocean ridge provides the new land pushing the plates, and the subduction zones gobble up the land on the the other side of the plates. The mechanism was convection currents! ...
Name_________________________ Earth`s
... The outer layer of the earth is called the __________________. It is made up of tectonic ________________. Just underneath the crust is the _____________________ and right in the middle of the earth is the _____________. Colliding plates produce _______________________ and _____________________ at t ...
... The outer layer of the earth is called the __________________. It is made up of tectonic ________________. Just underneath the crust is the _____________________ and right in the middle of the earth is the _____________. Colliding plates produce _______________________ and _____________________ at t ...
Part I. The Layers of Earth - www .alexandria .k12 .mn .us
... 4. Describe, in your own words, how the earth’s layers were formed? (see “The Four Layers”) _____________________________________________________________________ _____________________________________________________________________ ...
... 4. Describe, in your own words, how the earth’s layers were formed? (see “The Four Layers”) _____________________________________________________________________ _____________________________________________________________________ ...
Chapter 7, Section 3 Answer Key
... A ___ 11. When rock is heated, it becomes less dense and tends to a. rise. b. sink. c. move sideways. d. erupt. B ___ 12. When rock cools, it becomes more dense and tends to a. rise to the surface. b. sink below the surface. c. move sideways. d. push against the surface. 13. Density changes in the a ...
... A ___ 11. When rock is heated, it becomes less dense and tends to a. rise. b. sink. c. move sideways. d. erupt. B ___ 12. When rock cools, it becomes more dense and tends to a. rise to the surface. b. sink below the surface. c. move sideways. d. push against the surface. 13. Density changes in the a ...
Plate Tectonics - Liberty Union High School District
... Rigid Plates: Tectonic Plates http://www.hhmi.org/biointeractive/plate-tectonics ...
... Rigid Plates: Tectonic Plates http://www.hhmi.org/biointeractive/plate-tectonics ...
Chapter 2 Concept Review
... • The force of attraction between any two objects depends on the masses of the objects and the distance between them, according to _______ ____ ___ _______ – Newton’s law of gravitation ...
... • The force of attraction between any two objects depends on the masses of the objects and the distance between them, according to _______ ____ ___ _______ – Newton’s law of gravitation ...
PLATE TECTONICS online
... 5. On the world map at the end of this lab, draw and label the following features: the Mid Atlantic Ridge; the East Pacific Rise; the continental shelves of North America; the Nazca trench; the Cascadia trench; the Japan trench; the Middle America trench; the Puerto Rico trench; the Himalayas; the S ...
... 5. On the world map at the end of this lab, draw and label the following features: the Mid Atlantic Ridge; the East Pacific Rise; the continental shelves of North America; the Nazca trench; the Cascadia trench; the Japan trench; the Middle America trench; the Puerto Rico trench; the Himalayas; the S ...
Name
... 5.) Where is the Earth’s longest mountain chain? ________________________________ 6.) How long is it?! ____________________ miles long! 7.) Draw a diagram (with labels!) showing sea floor spreading in the rectangle below: 8.) At what rate does the Atlantic Ocean “grow” every year between North Ameri ...
... 5.) Where is the Earth’s longest mountain chain? ________________________________ 6.) How long is it?! ____________________ miles long! 7.) Draw a diagram (with labels!) showing sea floor spreading in the rectangle below: 8.) At what rate does the Atlantic Ocean “grow” every year between North Ameri ...
Chapter 2, Section 4
... As it rises, some of the rock melts to form magma. Why does melting happen there? To understand that, you need to know that the melting temperature of rock decreases as the pressure on the rock decreases. As the mantle rock rises, its temperature stays about the same because cooling takes a long tim ...
... As it rises, some of the rock melts to form magma. Why does melting happen there? To understand that, you need to know that the melting temperature of rock decreases as the pressure on the rock decreases. As the mantle rock rises, its temperature stays about the same because cooling takes a long tim ...
12.2 Features of Plate Tectonics
... a trench. Cone-shaped volcanoes can form from magma seeping to the surface. This is how the volcanic belt of the North America’s west coast has formed. Mountain ranges like the Coast Mountain range also form from the collision. Earthquakes can occur when subduction, ridge push, and slab pull ...
... a trench. Cone-shaped volcanoes can form from magma seeping to the surface. This is how the volcanic belt of the North America’s west coast has formed. Mountain ranges like the Coast Mountain range also form from the collision. Earthquakes can occur when subduction, ridge push, and slab pull ...
In geologic terms, a plate is a large, rigid slab of solid rock
... major role in shaping the Earth's surface. This way of thinking was known as "catastrophism," and geology (the study of the Earth) was based on the belief that all earthly changes were sudden and caused by a series of catastrophes. However, by the mid-19th century, catastrophism gave way to "uniform ...
... major role in shaping the Earth's surface. This way of thinking was known as "catastrophism," and geology (the study of the Earth) was based on the belief that all earthly changes were sudden and caused by a series of catastrophes. However, by the mid-19th century, catastrophism gave way to "uniform ...
Understanding Plate Boundaries
... Hot Spots Most earthquakes and volcanoes occur along plate boundaries, but there are some exceptions. For example, the Hawaiian Islands are located in the middle of the Pacific plate. Yet each Hawaiian island was formed by a volcano, as lava from ongoing eruptions built up into an island. A hot spot ...
... Hot Spots Most earthquakes and volcanoes occur along plate boundaries, but there are some exceptions. For example, the Hawaiian Islands are located in the middle of the Pacific plate. Yet each Hawaiian island was formed by a volcano, as lava from ongoing eruptions built up into an island. A hot spot ...
Document
... There are four types of plate boundaries: 1. Divergent boundaries -- where new crust is generated as the plates pull away from each other. 2. Convergent boundaries -- where crust is destroyed as one plate dives under another. 3. Transform boundaries -- where crust is neither produced nor ...
... There are four types of plate boundaries: 1. Divergent boundaries -- where new crust is generated as the plates pull away from each other. 2. Convergent boundaries -- where crust is destroyed as one plate dives under another. 3. Transform boundaries -- where crust is neither produced nor ...
Chapter305.ppt
... describes continental drift, sea floor spreading, and subduction. It also links plate movements with other earth processes such as earthquakes, volcanism, and mountain building. ...
... describes continental drift, sea floor spreading, and subduction. It also links plate movements with other earth processes such as earthquakes, volcanism, and mountain building. ...
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.