Science multi-choice
... a. Two oceanic plates collide. b. Two continental plates collide. c. Two oceanic plates spread apart. d. None of the above. 7. Which of these statements is correct? a. Continental crust is thicker than oceanic crust. b. Continental crust is thinner than oceanic crust. c. Oceanic crust is thicker tha ...
... a. Two oceanic plates collide. b. Two continental plates collide. c. Two oceanic plates spread apart. d. None of the above. 7. Which of these statements is correct? a. Continental crust is thicker than oceanic crust. b. Continental crust is thinner than oceanic crust. c. Oceanic crust is thicker tha ...
File
... pushed down and eventually melting. This melted magma finds its way up through fissures (cracks) in the Earth’s surface. Mantle (asthenosphere) ...
... pushed down and eventually melting. This melted magma finds its way up through fissures (cracks) in the Earth’s surface. Mantle (asthenosphere) ...
Theory of Plate Tectonics
... ocean trenches are areas where plates are being recycled. This can happen where two plates push together. The crust on the edge of one plate is slowly forced under the other. The plate gets pushed back down into Earth's mantle. It will become molten rock again. This type of area is known as a subduc ...
... ocean trenches are areas where plates are being recycled. This can happen where two plates push together. The crust on the edge of one plate is slowly forced under the other. The plate gets pushed back down into Earth's mantle. It will become molten rock again. This type of area is known as a subduc ...
File
... Layers of the Earth- crust, mantle, core, lithosphere, asthenosphere Plate Tectonics- what is it? What is the evidence? How does it work (what’s the mechanism)? Plate boundaries & landforms associated with boundaries, mechanisms such as convection & slab-pull Earthquakes- p & s waves, faults, epicen ...
... Layers of the Earth- crust, mantle, core, lithosphere, asthenosphere Plate Tectonics- what is it? What is the evidence? How does it work (what’s the mechanism)? Plate boundaries & landforms associated with boundaries, mechanisms such as convection & slab-pull Earthquakes- p & s waves, faults, epicen ...
View Sample
... It is the thinnest part of the crust, its thickness an average of 8km Oceanic crust is heavy (heavier than continental) Most common rock is basalt Rocks of the oceanic crust are often referred to as sima this refers to their most common mineral components silica and magnesium Layer 2- The mantle Thi ...
... It is the thinnest part of the crust, its thickness an average of 8km Oceanic crust is heavy (heavier than continental) Most common rock is basalt Rocks of the oceanic crust are often referred to as sima this refers to their most common mineral components silica and magnesium Layer 2- The mantle Thi ...
Earthsci1
... Plagioclase) with sea water to form a new set of hydrous minerals (amphibole epidote and haematite (Fe2O3)). These minerals are then physically transported by the process of `sea-floor spreading' to zones of subduction where they pass back into the mantle. The water is supplied via hydrous convectio ...
... Plagioclase) with sea water to form a new set of hydrous minerals (amphibole epidote and haematite (Fe2O3)). These minerals are then physically transported by the process of `sea-floor spreading' to zones of subduction where they pass back into the mantle. The water is supplied via hydrous convectio ...
california – geologic history and
... A. Geologic movements developing great North American Cordillera 1. Mountain chain extending from Alaska to Guatemala Plate tectonics A. A general theory describing movements of continental and oceanic crustal plates B. Earth’s Lithosphere (composed of crust and upper mantle materials) broken into l ...
... A. Geologic movements developing great North American Cordillera 1. Mountain chain extending from Alaska to Guatemala Plate tectonics A. A general theory describing movements of continental and oceanic crustal plates B. Earth’s Lithosphere (composed of crust and upper mantle materials) broken into l ...
Article - The Evidence of Plate Tectonics
... Evidence of Plate Tectonics There was one other major problem with Earth theories that no one had resolved, or even come close to resolving. That was the question of where all the sediments went. Every year Earth’s rivers carried massive volumes of eroded material—500 million tons of calcium, for in ...
... Evidence of Plate Tectonics There was one other major problem with Earth theories that no one had resolved, or even come close to resolving. That was the question of where all the sediments went. Every year Earth’s rivers carried massive volumes of eroded material—500 million tons of calcium, for in ...
Layers of the Earth
... The Earth has several distinct layers: The crust – the outermost layer of the Earth, comprised of 2 types of crust - continental and oceanic. The crust has a variable thickness, being 35-70 km thick in the continents and 5-10 km thick in the ocean basins. Continental crust has a varying thickness, b ...
... The Earth has several distinct layers: The crust – the outermost layer of the Earth, comprised of 2 types of crust - continental and oceanic. The crust has a variable thickness, being 35-70 km thick in the continents and 5-10 km thick in the ocean basins. Continental crust has a varying thickness, b ...
Name Date Class LESSON 2 Landforms at Plate Boundaries
... Directions: In each part of the circle, write the number of the statement that best describes each landform. Some numbers may be used more than once. ...
... Directions: In each part of the circle, write the number of the statement that best describes each landform. Some numbers may be used more than once. ...
Layers of The Earth
... The Earth has several distinct layers: The crust – the outermost layer of the Earth, comprised of 2 types of crust - continental and oceanic. The crust has a variable thickness, being 35-70 km thick in the continents and 5-10 km thick in the ocean basins. Continental crust has a varying thickness, b ...
... The Earth has several distinct layers: The crust – the outermost layer of the Earth, comprised of 2 types of crust - continental and oceanic. The crust has a variable thickness, being 35-70 km thick in the continents and 5-10 km thick in the ocean basins. Continental crust has a varying thickness, b ...
Lesson: Design and Build a Dual Purpose Tool
... o The plates are moved by thermal convection currents of the circulation of magma in the asthenosphere. Much like how hot water rises up and cooler water sinks down in a bathtub. o It is proposed that there are 12 plates in the present day, which include some oceanic and some continental. ¾ There ar ...
... o The plates are moved by thermal convection currents of the circulation of magma in the asthenosphere. Much like how hot water rises up and cooler water sinks down in a bathtub. o It is proposed that there are 12 plates in the present day, which include some oceanic and some continental. ¾ There ar ...
Plate Tectonics - Londonderry School District
... Coal exists under the ice in the rock of Antarctica – yet coal can only form from plants that grow in warm climates. ...
... Coal exists under the ice in the rock of Antarctica – yet coal can only form from plants that grow in warm climates. ...
Plate boundaries: study information from class only
... Two oceanic crusts Oceanic crust subducts under opposing oceanic crust Oldest oceanic crust subducts ...
... Two oceanic crusts Oceanic crust subducts under opposing oceanic crust Oldest oceanic crust subducts ...
Geography revision - Miss Zee: Geography
... • Subduction- the process by which, when two tectonic plates collide, one plate slides under another ...
... • Subduction- the process by which, when two tectonic plates collide, one plate slides under another ...
"Inside Earth" Chapter 1 Section 1
... consists of two parts- a liquid outer core and a solid inner core”. P. 12 ** “Just as a bar magnet is surrounded by its own magnetic field, Earth’s magnetic field surrounds the planet”. P. 13 Section 1 Vocab: seismic waves, pressure, crust, basalt, granite, mantle, lithosphere, asthenosphere, outer ...
... consists of two parts- a liquid outer core and a solid inner core”. P. 12 ** “Just as a bar magnet is surrounded by its own magnetic field, Earth’s magnetic field surrounds the planet”. P. 13 Section 1 Vocab: seismic waves, pressure, crust, basalt, granite, mantle, lithosphere, asthenosphere, outer ...
File - Native Expeditions
... Sonar used in WWII found the Mid Atlantic Ridge, a mountainous ridge where new oceanic crust is produced ...
... Sonar used in WWII found the Mid Atlantic Ridge, a mountainous ridge where new oceanic crust is produced ...
Plate Tectonics Basics Note Slides File
... • 2 plates moving away from each other – Occurs usually with two ocean plates – Magma from below spews up and hardens to create new crust. This forces older crust out and away from this plate boundary. So, plates move apart and get bigger as magma cools on the edges of the plates – Example: Mid-Atla ...
... • 2 plates moving away from each other – Occurs usually with two ocean plates – Magma from below spews up and hardens to create new crust. This forces older crust out and away from this plate boundary. So, plates move apart and get bigger as magma cools on the edges of the plates – Example: Mid-Atla ...
Plate Tectonics - Department of Physics and Astronomy
... – Large-scale surface features – Related phenomena ...
... – Large-scale surface features – Related phenomena ...
Plate Tectonics
... ________take place _______a source of heat. Ex. Hot water is less dense than cold water and ...
... ________take place _______a source of heat. Ex. Hot water is less dense than cold water and ...
Plate boundaries
... theory, Wegener, claimed that the plates were propelled on a solid ocean floor, an idea geologist do not support. The theory relies only on the jigsaw fit and fossil similarities. Plate tectonics was developed to shed more light on the nature of the plates and boundaries. The theory is supported by ...
... theory, Wegener, claimed that the plates were propelled on a solid ocean floor, an idea geologist do not support. The theory relies only on the jigsaw fit and fossil similarities. Plate tectonics was developed to shed more light on the nature of the plates and boundaries. The theory is supported by ...
Detailed plate tectonics
... Convergent Boundaries • When two plates move together. • Three types – Convergence can occur between an oceanic and a largely continental plate – Between two largely oceanic plates – Between two largely continental plates. ...
... Convergent Boundaries • When two plates move together. • Three types – Convergence can occur between an oceanic and a largely continental plate – Between two largely oceanic plates – Between two largely continental plates. ...
Ch 5 Notes
... 2. Ex: Sunlight or a flame ii. Conduction: heat transfer within a material or between materials that are touching 1. Ex: A spoon in a pot of hot soup heats up a. Particles near the bottom of the spoon vibrate faster, so they bump into other particles to heat them up too iii. Convection: heat transfe ...
... 2. Ex: Sunlight or a flame ii. Conduction: heat transfer within a material or between materials that are touching 1. Ex: A spoon in a pot of hot soup heats up a. Particles near the bottom of the spoon vibrate faster, so they bump into other particles to heat them up too iii. Convection: heat transfe ...
ASTRONOMY 161
... The crust plus the upper mantle form the lithosphere (solid but brittle). Beneath the lithosphere is the asthenosphere (plastic). The asthenosphere, heated from below, undergoes convection. ...
... The crust plus the upper mantle form the lithosphere (solid but brittle). Beneath the lithosphere is the asthenosphere (plastic). The asthenosphere, heated from below, undergoes convection. ...
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.