Lesson 2 - Plate Tectonics - Hitchcock
... • Scientists have proposed three mechanisms to explain how tectonic plates move: mantle convection, ridge push, and slab pull. • Hotter parts of the mantle rise as cooler, denser parts sink. This kind of movement of material due to differences in density is called convection. • Mantle convection dra ...
... • Scientists have proposed three mechanisms to explain how tectonic plates move: mantle convection, ridge push, and slab pull. • Hotter parts of the mantle rise as cooler, denser parts sink. This kind of movement of material due to differences in density is called convection. • Mantle convection dra ...
Unit 4 Lesson 2 Plate Tectonics
... • Scientists have proposed three mechanisms to explain how tectonic plates move: mantle convection, ridge push, and slab pull. • Hotter parts of the mantle rise as cooler, denser parts sink. This kind of movement of material due to differences in density is called convection. • Mantle convection dra ...
... • Scientists have proposed three mechanisms to explain how tectonic plates move: mantle convection, ridge push, and slab pull. • Hotter parts of the mantle rise as cooler, denser parts sink. This kind of movement of material due to differences in density is called convection. • Mantle convection dra ...
Wednesday 121509
... • Following Instructions Lessons • Drawing Lessons • Finish Converging And Transform Fault Boundaries ...
... • Following Instructions Lessons • Drawing Lessons • Finish Converging And Transform Fault Boundaries ...
http://www.cotf.edu/ete/modules/msese/earthsysflr/plates1.html 10
... Places where plates are coming apart are called divergent boundaries. As shown in the drawing above, when Earth's brittle surface layer (the lithosphere) is pulled apart, it typically breaks along parallel faults that tilt slightly outward from each other. As the plates separate along the boundary, ...
... Places where plates are coming apart are called divergent boundaries. As shown in the drawing above, when Earth's brittle surface layer (the lithosphere) is pulled apart, it typically breaks along parallel faults that tilt slightly outward from each other. As the plates separate along the boundary, ...
Chapter 18 Section One
... that the lithosphere is broken into many large and small slabs of rock called tectonic plates (tehk-TAHN-ihk). Scientists do not know exactly how or when in Earth’s history these giant plates formed. Tectonic plates fit together like a jigsaw puzzle that makes up the surface of Earth. You could comp ...
... that the lithosphere is broken into many large and small slabs of rock called tectonic plates (tehk-TAHN-ihk). Scientists do not know exactly how or when in Earth’s history these giant plates formed. Tectonic plates fit together like a jigsaw puzzle that makes up the surface of Earth. You could comp ...
Introduction: - Evergreen Archives
... amounts of aluminum, iron, magnesium, calcium, potassium, and sodium. There are two types of crust. Basalt is the most common rock on Earth. Oceanic crust is made of relatively dense rock called basalt. Continental crust is made of lower density rocks, such as andesite and granite. The outermost la ...
... amounts of aluminum, iron, magnesium, calcium, potassium, and sodium. There are two types of crust. Basalt is the most common rock on Earth. Oceanic crust is made of relatively dense rock called basalt. Continental crust is made of lower density rocks, such as andesite and granite. The outermost la ...
- cK-12
... 7) Earth has continents and oceans because a) Continental crust sinks below oceanic crust. b) Oceanic crust sinks below continental crust. c) Oceanic crust rises above continental crust. d) None of these. ...
... 7) Earth has continents and oceans because a) Continental crust sinks below oceanic crust. b) Oceanic crust sinks below continental crust. c) Oceanic crust rises above continental crust. d) None of these. ...
Physical Geology - Geol 1330 (07610) - Spring
... 45. Which of the following convergent plate boundaries will produce the highest mountains? a) oceanic-oceanic b) oceanic-continent c) continent-continent 46. Which of the following is thought to be the dominant driving force for the motion of plates on Earth? a) slab pull in subduction zones b) ridg ...
... 45. Which of the following convergent plate boundaries will produce the highest mountains? a) oceanic-oceanic b) oceanic-continent c) continent-continent 46. Which of the following is thought to be the dominant driving force for the motion of plates on Earth? a) slab pull in subduction zones b) ridg ...
Geology of the Feather River
... Plate Tectonics (which is different from continental drift) Subduction results in remelted material (magma) which rises because it is less dense to form new crust Plate margins are places of brittle and ductile deformation The past is the key to the present…geologic processes are dynamic ...
... Plate Tectonics (which is different from continental drift) Subduction results in remelted material (magma) which rises because it is less dense to form new crust Plate margins are places of brittle and ductile deformation The past is the key to the present…geologic processes are dynamic ...
Physical and Ecological Processes
... happens most often when oceanic plates collide with continental plates. ...
... happens most often when oceanic plates collide with continental plates. ...
Chapter 13 Earthquakes and Earth`s Interior
... Similar to how whales, bats and other animals use sound to ‘echolocate’ prey, seismologists can use waves generated by earthquakes to tell them about the shape and composition of the Earth’s interior. Similar to sound waves, P and S-waves will change speed and direction as they go from one area of ...
... Similar to how whales, bats and other animals use sound to ‘echolocate’ prey, seismologists can use waves generated by earthquakes to tell them about the shape and composition of the Earth’s interior. Similar to sound waves, P and S-waves will change speed and direction as they go from one area of ...
Volcanoes Reading - SOEST
... probably the best known among these chains. Wilson proposed that hot spots represent the surface manifestation of point sources of magma, which have remained in a relatively fixed position in the mantle of the earth for extended periods of time. The hypothesis suggests that these sources of magma li ...
... probably the best known among these chains. Wilson proposed that hot spots represent the surface manifestation of point sources of magma, which have remained in a relatively fixed position in the mantle of the earth for extended periods of time. The hypothesis suggests that these sources of magma li ...
Earth and Space Science (Volcanoes)
... Strand ESS Earth and Space Science Topic ESS.1 This topic focuses on the physical features of Earth and how they formed. This includes the interior of Earth, the rock record, plate tectonics and landforms. Content Statement ESS.1.2 Earth’s crust consists of major and minor tectonic plates that move ...
... Strand ESS Earth and Space Science Topic ESS.1 This topic focuses on the physical features of Earth and how they formed. This includes the interior of Earth, the rock record, plate tectonics and landforms. Content Statement ESS.1.2 Earth’s crust consists of major and minor tectonic plates that move ...
Dynamic Planet Test
... 26. Which of the following would be first to crystallize as magma cools? a. Amphibole b. Pyroxene c. Olivine d. Quartz 27. What is the primary cause of delamination? a. The instability caused by the difference in density of the lithosphere and asthenosphere b. Accretion due to interplate forces c. ...
... 26. Which of the following would be first to crystallize as magma cools? a. Amphibole b. Pyroxene c. Olivine d. Quartz 27. What is the primary cause of delamination? a. The instability caused by the difference in density of the lithosphere and asthenosphere b. Accretion due to interplate forces c. ...
process that occurs when tectonic plates of different densities collide
... occurs between subducting crust and underside of overriding plate ...
... occurs between subducting crust and underside of overriding plate ...
Dynamic Planet Test 1. Label the plates on the map: (1 point each) A
... 26. Which of the following would be first to crystallize as magma cools? a. Amphibole b. Pyroxene c. Olivine d. Quartz 27. What is the primary cause of delamination? a. The instability caused by the difference in density of the lithosphere and asthenosphere b. Accretion due to interplate forces c. ...
... 26. Which of the following would be first to crystallize as magma cools? a. Amphibole b. Pyroxene c. Olivine d. Quartz 27. What is the primary cause of delamination? a. The instability caused by the difference in density of the lithosphere and asthenosphere b. Accretion due to interplate forces c. ...
Earth and Space Science Quarterly Pre/Post Assessment
... Quarterly Pre/Post Assessment 8th Grade ...
... Quarterly Pre/Post Assessment 8th Grade ...
Inside the Earth
... earth. They are caused by the release of stored energy in earths outer layer.This release of energy causes sudden shifts of rocks along faults ...
... earth. They are caused by the release of stored energy in earths outer layer.This release of energy causes sudden shifts of rocks along faults ...
Section 17.2 Seafloor Spreading
... The process by which oceanic crust sinks beneath a deepocean trench and back into the mantle at a convergent plate boundary. The process by which molten material adds new oceanic crust to the ocean floor. ...
... The process by which oceanic crust sinks beneath a deepocean trench and back into the mantle at a convergent plate boundary. The process by which molten material adds new oceanic crust to the ocean floor. ...
continental drift and plate tectonics
... Lithospheric plates and plate tectonics • where are the spreading continents going? • the answer was important in initiating the rock plate concept • rock sections or plates which diverge from spreading zones move towards or converge on subduction zones • Rock plates • ocean basin and continental se ...
... Lithospheric plates and plate tectonics • where are the spreading continents going? • the answer was important in initiating the rock plate concept • rock sections or plates which diverge from spreading zones move towards or converge on subduction zones • Rock plates • ocean basin and continental se ...
Lesson 12 - Intra Plate Volcanism
... types of plate boundaries, these being convergent and divergent boundaries. Very little volcanic activity is seen at transform fault boundaries. Volcanism associated with plate tectonic activity are found in three areas on Earth; 1) Ridges (or spreading centers) Reference: 2) Subduction zones 3) I ...
... types of plate boundaries, these being convergent and divergent boundaries. Very little volcanic activity is seen at transform fault boundaries. Volcanism associated with plate tectonic activity are found in three areas on Earth; 1) Ridges (or spreading centers) Reference: 2) Subduction zones 3) I ...
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.