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... asthenosphere is like hot taffy 2. This allows plates to ride on top of hot, flowing rock. 3. Plates move because heat is being released from deep inside the earth. 4. Convection currents causes hot material to rise and expand (plates diverge) and cooler material to sink and contract (plates converg ...
... asthenosphere is like hot taffy 2. This allows plates to ride on top of hot, flowing rock. 3. Plates move because heat is being released from deep inside the earth. 4. Convection currents causes hot material to rise and expand (plates diverge) and cooler material to sink and contract (plates converg ...
PlateTectonics_001
... asthenosphere is like hot taffy 2. This allows plates to ride on top of hot, flowing rock. 3. Plates move because heat is being released from deep inside the earth. 4. Convection currents causes hot material to rise and expand (plates diverge) and cooler material to sink and contract (plates converg ...
... asthenosphere is like hot taffy 2. This allows plates to ride on top of hot, flowing rock. 3. Plates move because heat is being released from deep inside the earth. 4. Convection currents causes hot material to rise and expand (plates diverge) and cooler material to sink and contract (plates converg ...
Section 1: Earth`s Interior (pages 16 – 24)
... - It includes both dry land and the ocean floor. - The crust beneath the ocean is called oceanic crust. - The oceanic crust consists mostly of dense rock called basalt. - The continental crust (crust that forms the continents) consists mainly of a less dense rock called granite. 2. Mantle – layer of ...
... - It includes both dry land and the ocean floor. - The crust beneath the ocean is called oceanic crust. - The oceanic crust consists mostly of dense rock called basalt. - The continental crust (crust that forms the continents) consists mainly of a less dense rock called granite. 2. Mantle – layer of ...
ASTR1010_HW07
... Earth, the thin, brittle crust breaks up into tectonic plates (see Figure 8.17) which are dragged around by convective motion in the mantle (see Figure 8.15). This both creates new crust (as plates move apart), and destroys old crust (as they come together) – see Figure 8.16. The Earth basically res ...
... Earth, the thin, brittle crust breaks up into tectonic plates (see Figure 8.17) which are dragged around by convective motion in the mantle (see Figure 8.15). This both creates new crust (as plates move apart), and destroys old crust (as they come together) – see Figure 8.16. The Earth basically res ...
ISN- Insert Plate Tectonics for Cornell Notes
... Plates move apart, or diverge, from each other at a divergent boundary. Most divergent boundaries occur along the mid-ocean ridges, where new crust is added during sea-floor spreading. Where pieces of Earth’s crust diverge on land, a deep valley called a rift valley forms where the crust is slowly p ...
... Plates move apart, or diverge, from each other at a divergent boundary. Most divergent boundaries occur along the mid-ocean ridges, where new crust is added during sea-floor spreading. Where pieces of Earth’s crust diverge on land, a deep valley called a rift valley forms where the crust is slowly p ...
Earth`s Interior 08
... Fault = a fracture along which visible displacement can be detected on one side relative to the other. B. ...
... Fault = a fracture along which visible displacement can be detected on one side relative to the other. B. ...
Continental Drift
... Separate, mostly at oceanic ridges Collide, in areas such as oceanic trenches where they may be subducted back into the mantle Slide past each other along transform faults ...
... Separate, mostly at oceanic ridges Collide, in areas such as oceanic trenches where they may be subducted back into the mantle Slide past each other along transform faults ...
Where in the World was Lystrosaurus
... Base your answers to questions 5 and 6 on the diagrams below of geologic cross sections of the upper mantle and crust at four different Earth locations, A, B, C, and D. Movement of the crustal sections (plates) is indicated by arrows, and the locations of frequent earthquakes are indicated by •. Di ...
... Base your answers to questions 5 and 6 on the diagrams below of geologic cross sections of the upper mantle and crust at four different Earth locations, A, B, C, and D. Movement of the crustal sections (plates) is indicated by arrows, and the locations of frequent earthquakes are indicated by •. Di ...
What is the theory of plate tectonics
... Usually an oceanic plate diverges from another oceanic plate. ____________________________ occurs at divergent oceanic plate boundaries and leads to the creation of new ocean floor. What happens at a divergent boundary? What forms along that boundary? As two tectonic plates slowly separate, __ ...
... Usually an oceanic plate diverges from another oceanic plate. ____________________________ occurs at divergent oceanic plate boundaries and leads to the creation of new ocean floor. What happens at a divergent boundary? What forms along that boundary? As two tectonic plates slowly separate, __ ...
Changing Earth - Ms. Stinson's Science Class
... becomes denser, and sinks. This occurs where two p move together at a convergent boundary. When an oceanic plate converges with a less dense continental plate, the denser oceanic plate sinks under the continental plate. The area where an oceanic plate subducts, or goes down, into the mantle is calle ...
... becomes denser, and sinks. This occurs where two p move together at a convergent boundary. When an oceanic plate converges with a less dense continental plate, the denser oceanic plate sinks under the continental plate. The area where an oceanic plate subducts, or goes down, into the mantle is calle ...
Tectonic Landforms
... subducts underneath the continental lithosphere • Oceanic lithosphere heats and dehydrates as it subsides • The melt rises resulting in volcanism • E.g. The Andes ...
... subducts underneath the continental lithosphere • Oceanic lithosphere heats and dehydrates as it subsides • The melt rises resulting in volcanism • E.g. The Andes ...
Geography 12
... fracture or cracking the earth’s crust, usually occurring where plates are separating, sliding past one another, or colliding Vulcanism: the movement of molten rock, or magma, beneath or above the earth’s surface Hot Spot: a point on the earth’s surface where strong upward convection currents or plu ...
... fracture or cracking the earth’s crust, usually occurring where plates are separating, sliding past one another, or colliding Vulcanism: the movement of molten rock, or magma, beneath or above the earth’s surface Hot Spot: a point on the earth’s surface where strong upward convection currents or plu ...
Journey to the Center of Earth
... There are 2 kinds of Crust: Continental (thicker) and Oceanic (thinner) ...
... There are 2 kinds of Crust: Continental (thicker) and Oceanic (thinner) ...
Continental Drift & Seafloor Spreading
... Newer rock will have less deposits on it- more dense, more layers, older rock is at the trenches ...
... Newer rock will have less deposits on it- more dense, more layers, older rock is at the trenches ...
EDT - OceanExplorer
... In 1922, Alfred Wegener publishes the idea of “Pangea” the greek word for meaning “All Earth”. He saw that continents were less dense material floating on the ocean. ...
... In 1922, Alfred Wegener publishes the idea of “Pangea” the greek word for meaning “All Earth”. He saw that continents were less dense material floating on the ocean. ...
20081 Study Guide_i-40
... with grinding motion, the edges become rough and jagged. Direct collisions crumple and uplift the earth’s crust, producing mountains. Grinding causes the earth’s crust to fracture. ...
... with grinding motion, the edges become rough and jagged. Direct collisions crumple and uplift the earth’s crust, producing mountains. Grinding causes the earth’s crust to fracture. ...
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... Scientists rejected Wegener’s theory because he could not explain what force ...
... Scientists rejected Wegener’s theory because he could not explain what force ...
This is - Welcome to St Paul Lutheran Church & School
... Scientists rejected Wegener’s theory because he could not explain what force ...
... Scientists rejected Wegener’s theory because he could not explain what force ...
File
... The inner core of the Earth has temperatures and pressures so great that the metals are squeezed together and are not able to move about like a liquid, but are forced to vibrate in place like a ...
... The inner core of the Earth has temperatures and pressures so great that the metals are squeezed together and are not able to move about like a liquid, but are forced to vibrate in place like a ...
Slide 1
... the ocean floor moved laterally away from the ridge and plunged into an oceanic trench along the continental margin. ...
... the ocean floor moved laterally away from the ridge and plunged into an oceanic trench along the continental margin. ...
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.