Paleozoic Plate Tectonics Quiz
... 5) Eastern North America has a sequence of metamorphic rock, metamorphosed sedimentary rock and a volcanic arc. This is due to a) Convergence during the Taconic Orogeny. b) Convergence due to the Appalachian Orogeny. c) Divergence due to the opening of the Atlantic Ocean. d) Divergence during the L ...
... 5) Eastern North America has a sequence of metamorphic rock, metamorphosed sedimentary rock and a volcanic arc. This is due to a) Convergence during the Taconic Orogeny. b) Convergence due to the Appalachian Orogeny. c) Divergence due to the opening of the Atlantic Ocean. d) Divergence during the L ...
Lecture 7.3 - Heat production.key
... present3, and on temperature, melt fraction and depletion, stress and strain rate (see 400 km whether subduction and plate tectonics occurred during this time is Methods). The initial temperature field is the horizontally averaged tem600 ambiguous, both in the geological record and in geodynamic mod ...
... present3, and on temperature, melt fraction and depletion, stress and strain rate (see 400 km whether subduction and plate tectonics occurred during this time is Methods). The initial temperature field is the horizontally averaged tem600 ambiguous, both in the geological record and in geodynamic mod ...
Sea Floor Spreading
... consuming crust, and creating Mid-Atlantic Ridge when the rocks are being formed from earthquakes and volcanic activity. Polarity lava at the mid-Atlantic ridge, they Sea floor spreading harden and cool, taking on the magnetic The mid–Atlantic Ocean has an area polarity of the earth at the time or w ...
... consuming crust, and creating Mid-Atlantic Ridge when the rocks are being formed from earthquakes and volcanic activity. Polarity lava at the mid-Atlantic ridge, they Sea floor spreading harden and cool, taking on the magnetic The mid–Atlantic Ocean has an area polarity of the earth at the time or w ...
Period
... EXPLAIN WHY Earth’s lithosphere can be compared to the cracked eggshell of a hard boiled egg. Be sure to mention Earth’s “plates” in your answer. ...
... EXPLAIN WHY Earth’s lithosphere can be compared to the cracked eggshell of a hard boiled egg. Be sure to mention Earth’s “plates” in your answer. ...
Slide 1
... This PD explains how the theory of Plate Tectonics was developed and how this relatively new paradigm not only explains why the Earth is so dynamic but also how it can be used to reconstruct the past appearance of the planet, predict the most likely locations of mineral and hydrocarbon deposits and ...
... This PD explains how the theory of Plate Tectonics was developed and how this relatively new paradigm not only explains why the Earth is so dynamic but also how it can be used to reconstruct the past appearance of the planet, predict the most likely locations of mineral and hydrocarbon deposits and ...
Created with Sketch. Tectonic sandwiches
... boundaries – movement happens. The plates can move apart, they can move horizontally past each other or they can move towards each other. The movement is very slow – often just a few millimetres per year. The plates do not glide easily past one another. Friction holds the plates in place and pressur ...
... boundaries – movement happens. The plates can move apart, they can move horizontally past each other or they can move towards each other. The movement is very slow – often just a few millimetres per year. The plates do not glide easily past one another. Friction holds the plates in place and pressur ...
`I. True/False Questions: circle a “T” for true or “F” for false (10% total
... 3. (T F) After a theory has survived much scientific scrutiny, it may be elevated to hypothesis status. 4. (T F) Convergent plate tectonic boundaries are located where plates move toward one another. 5. (T F) Transform plate boundaries only affect oceanic lithosphere. 6. (T F) A dike is a concordant ...
... 3. (T F) After a theory has survived much scientific scrutiny, it may be elevated to hypothesis status. 4. (T F) Convergent plate tectonic boundaries are located where plates move toward one another. 5. (T F) Transform plate boundaries only affect oceanic lithosphere. 6. (T F) A dike is a concordant ...
Earth Science - SC.7.E.6.2: First Assessment 1) Beaches and barrier
... b. Hundreds of volcanoes erupted along the range, forming mountains and hills. c. Plates of Earth's crust slowly collided until one plate was on top of the other and pushed upward. d. ...
... b. Hundreds of volcanoes erupted along the range, forming mountains and hills. c. Plates of Earth's crust slowly collided until one plate was on top of the other and pushed upward. d. ...
Section 1 Earth`s Structure - Midway Middle School Science
... types of crust are rocky, thin, and fractured. The Physical Structure of Earth Figure 2 shows how Earth is divided into five layers based on physical properties. Earth’s outer layer is the lithosphere, which is a cool, rigid layer that includes the crust and the upper part of the mantle. The lithosp ...
... types of crust are rocky, thin, and fractured. The Physical Structure of Earth Figure 2 shows how Earth is divided into five layers based on physical properties. Earth’s outer layer is the lithosphere, which is a cool, rigid layer that includes the crust and the upper part of the mantle. The lithosp ...
The Earth`s Layers Foldable
... of molten (melted) iron, minerals and other semi-solid rocks that can flow under pressure. It is thought that when the rocks rise due to the very intense heat and then cool, this means that they sink back to the core and this movement causes the crust to break into sections, or plates. When these mo ...
... of molten (melted) iron, minerals and other semi-solid rocks that can flow under pressure. It is thought that when the rocks rise due to the very intense heat and then cool, this means that they sink back to the core and this movement causes the crust to break into sections, or plates. When these mo ...
Plate Tectonics
... •Outer Core-Very hot liquid metals 4,000 degrees F to 9000 degrees F •Made of Nickel and Iron •This liquid core produces a magnetic field that helps protect earth from coronal mass ejections (CME’s) produced by the sun. ...
... •Outer Core-Very hot liquid metals 4,000 degrees F to 9000 degrees F •Made of Nickel and Iron •This liquid core produces a magnetic field that helps protect earth from coronal mass ejections (CME’s) produced by the sun. ...
U4-T2.2-Convection and a Moving Seafloor
... convection, then Holmes suggested that convection could be the mechanism responsible for plate tectonics. Harry Hess was influenced by Holmes’ ideas, and suggested that deep within the asthenosphere, heated material expands, becomes less dense, rises, and pushes its way up through ridges. It then ...
... convection, then Holmes suggested that convection could be the mechanism responsible for plate tectonics. Harry Hess was influenced by Holmes’ ideas, and suggested that deep within the asthenosphere, heated material expands, becomes less dense, rises, and pushes its way up through ridges. It then ...
Environmental Science
... • The inner and outer core make up about one-third of Earth’s mass. Plate Tectonics • Tectonic plates are blocks of lithosphere that consist of the crust and the rigid, outermost part of the mantle and glide across the underlying asthenosphere. • The continents are located on tectonic plates and mov ...
... • The inner and outer core make up about one-third of Earth’s mass. Plate Tectonics • Tectonic plates are blocks of lithosphere that consist of the crust and the rigid, outermost part of the mantle and glide across the underlying asthenosphere. • The continents are located on tectonic plates and mov ...
4_Ocean126_2006
... Earth’s functional layers Crust – we know most about it; continental crust is less dense Moho – a density discontinuity that separates crust from the mantle – Depth varies under continents and oceans – First thought that this was layer where crust moved relative to earth’s interior BUT, outer ...
... Earth’s functional layers Crust – we know most about it; continental crust is less dense Moho – a density discontinuity that separates crust from the mantle – Depth varies under continents and oceans – First thought that this was layer where crust moved relative to earth’s interior BUT, outer ...
How the Earth`s Surface Changes Over Time
... How the plates broke and moved the continents over time ...
... How the plates broke and moved the continents over time ...
Earth`s Crust Name
... Earth has three layers: the crust, the mantle, and the core. The crust is made of solid rocks and minerals. Beneath the crust is the mantle, which is also mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma. At the center of the Earth is a hot, dense, mostly iron a ...
... Earth has three layers: the crust, the mantle, and the core. The crust is made of solid rocks and minerals. Beneath the crust is the mantle, which is also mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma. At the center of the Earth is a hot, dense, mostly iron a ...
Chapter Excerpt
... Convergence is when the oceanic crust collides with either another oceanic plate or a continental plate. The oceanic crust sinks forming an enormous trench and generating volconic activity. Convergence also includes continent to continent plate collisions..When two plates slide past one another a tr ...
... Convergence is when the oceanic crust collides with either another oceanic plate or a continental plate. The oceanic crust sinks forming an enormous trench and generating volconic activity. Convergence also includes continent to continent plate collisions..When two plates slide past one another a tr ...
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.