Ch 4 PPT - Blountstown Middle School
... subduction. • The area where a denser plate descends into Earth along a convergent plate boundary is called a subduction zone. ...
... subduction. • The area where a denser plate descends into Earth along a convergent plate boundary is called a subduction zone. ...
Pizza Slice Earth
... Inner core = white Outer core = yellow Lower mantle = orange Upper mantle = red ...
... Inner core = white Outer core = yellow Lower mantle = orange Upper mantle = red ...
Key - Scioly.org
... 53. Ridge push is the force applied on a plate at a divergent boundary by gravity acted on the part of the plate that is raised up near the spreading site, causing the plate to slide “downhill” away from the boundary. Slab pull is the force caused by mantle convection acting on a subducting section ...
... 53. Ridge push is the force applied on a plate at a divergent boundary by gravity acted on the part of the plate that is raised up near the spreading site, causing the plate to slide “downhill” away from the boundary. Slab pull is the force caused by mantle convection acting on a subducting section ...
Pre/Co-Requisite Challenge for Field Courses
... 1. Rocks and the Rock Cycle: What is a rock? Characteristics of felsic vs. mafic rocks. How do igneous (plutonic/intrusive and volcanic/extrusive), sedimentary (clastic and non-‐ clastic) and metamorphic rocks ...
... 1. Rocks and the Rock Cycle: What is a rock? Characteristics of felsic vs. mafic rocks. How do igneous (plutonic/intrusive and volcanic/extrusive), sedimentary (clastic and non-‐ clastic) and metamorphic rocks ...
Key - Scioly.org
... 33. None of them (1 point) ̠ 34. Lithosphere (1 point) ̠ 35. Asthenosphere (1 point) (1/2 point if just “mantle”) ̠ 36 ...
... 33. None of them (1 point) ̠ 34. Lithosphere (1 point) ̠ 35. Asthenosphere (1 point) (1/2 point if just “mantle”) ̠ 36 ...
Did PT begin in Early Archean time?
... 1989: Nutman et al. Recognised that "homogeneous grey gneisses” had variable geochronologic and isotopic histories, and could be divided into distinct terranes separated by thin mylonite zones 1997: Nutman et al. Recognised that Isua was comprised at least two chronologically and lithologically diff ...
... 1989: Nutman et al. Recognised that "homogeneous grey gneisses” had variable geochronologic and isotopic histories, and could be divided into distinct terranes separated by thin mylonite zones 1997: Nutman et al. Recognised that Isua was comprised at least two chronologically and lithologically diff ...
Chapter 11 Deformation of the Crust
... a. circum-Pacific belt – forms a ring around the Pacific Ocean b. Eurasian-Melanesian belt – runs from the Pacific Islands through Asia and Southern Europe and into Northwest Africa. B. Plate Tectonics and Mountains - scientists believe that most mountains from as a result of collisions between tect ...
... a. circum-Pacific belt – forms a ring around the Pacific Ocean b. Eurasian-Melanesian belt – runs from the Pacific Islands through Asia and Southern Europe and into Northwest Africa. B. Plate Tectonics and Mountains - scientists believe that most mountains from as a result of collisions between tect ...
Sea-Floor Spreading
... • That is the time it takes for new rock to form at the mid-ocean ridge, move across the ocean, and sink into a trench. ...
... • That is the time it takes for new rock to form at the mid-ocean ridge, move across the ocean, and sink into a trench. ...
Chapter 4
... Core – the central part of Earth that lives beneath the mantle Mantle – the thick layer of solid a molten rock that surrounds the core Crust – the thin layer of solid rock that makes up the outermost layer of Earth Hydrosphere – all of Earth’s liquid and solid water including oceans, lakes, rivers, ...
... Core – the central part of Earth that lives beneath the mantle Mantle – the thick layer of solid a molten rock that surrounds the core Crust – the thin layer of solid rock that makes up the outermost layer of Earth Hydrosphere – all of Earth’s liquid and solid water including oceans, lakes, rivers, ...
What They Say in Hong Kong Geography Books and Exam
... What they say (in a Geography exam marking scheme): The main cause of the transform faults is the results of the earth’s rotation. What we actually know: Earth’s rotation has nothing to do with transform faults. Transform faults are simply plate boundaries along which the plates on both sides of the ...
... What they say (in a Geography exam marking scheme): The main cause of the transform faults is the results of the earth’s rotation. What we actually know: Earth’s rotation has nothing to do with transform faults. Transform faults are simply plate boundaries along which the plates on both sides of the ...
STEM-Exam-3-Earth-Sci-Study-Guide
... Metamorphic rock is rock that was once form of rock but has changed to another under the influence of heat, pressure, or some other agent without passing through a liquid phase Sedimentary rocks are types of rock that are formed by the deposition of material at the Earth's surface and within bodies ...
... Metamorphic rock is rock that was once form of rock but has changed to another under the influence of heat, pressure, or some other agent without passing through a liquid phase Sedimentary rocks are types of rock that are formed by the deposition of material at the Earth's surface and within bodies ...
Sea Floor Spreading and Plate Tectonics
... Each cycle of spreading and intrusion results in the formation of another small section of ocean floor, which slowly moves away from the ridge. ...
... Each cycle of spreading and intrusion results in the formation of another small section of ocean floor, which slowly moves away from the ridge. ...
The Structure and Origin of the Ocean Basins The water Planet
... اﻻﻧﺪﺳ ﺎس. The subduction process depresses the sea floor forming a trench. As an oceanic plate is subducted into the Earth, it is subjected to increased pressure and temperature. These conditions cause the plate materials to melt. This molten material moves upward through crustal fractures adjacen ...
... اﻻﻧﺪﺳ ﺎس. The subduction process depresses the sea floor forming a trench. As an oceanic plate is subducted into the Earth, it is subjected to increased pressure and temperature. These conditions cause the plate materials to melt. This molten material moves upward through crustal fractures adjacen ...
Earth Layers Worksheet
... mantle is solid because of the high pressure. The upper mantle again can be divided into two layers, the liquid lower layer called the astenosphere and the stiffer upper part. The stiffer upper part together with the crust forms the lithosphere. The lithospheric plates of the Earth move because the ...
... mantle is solid because of the high pressure. The upper mantle again can be divided into two layers, the liquid lower layer called the astenosphere and the stiffer upper part. The stiffer upper part together with the crust forms the lithosphere. The lithospheric plates of the Earth move because the ...
10/12/09 Volcanoes and Plate TectonicsCh
... Form when an _________________ plate & a _________________________plate collide. The oceanic plate is subducted under the cont. plate causing it to melt into magma. The magma rises through the continent to form _______________________________. VIII.Hot Spot Volcanoes _______________________________- ...
... Form when an _________________ plate & a _________________________plate collide. The oceanic plate is subducted under the cont. plate causing it to melt into magma. The magma rises through the continent to form _______________________________. VIII.Hot Spot Volcanoes _______________________________- ...
Inside the Earth
... The mantle layer is the largest of the class. About half of our planet’s mass. The mantle is composed of very hot dense rocks, That move and flow, always on the go, they never lock, Never stop, and they’re responsible for tectonic shift Please believe the Earth’s plates are adrift It’s pretty thick ...
... The mantle layer is the largest of the class. About half of our planet’s mass. The mantle is composed of very hot dense rocks, That move and flow, always on the go, they never lock, Never stop, and they’re responsible for tectonic shift Please believe the Earth’s plates are adrift It’s pretty thick ...
Ch 6 - EARTH NOTES
... ii. Plate Tectonics = movement of lithospheric plates carrying continents. iii. Plate Boundary = _______________________________________________________ 1. intense geologic activity here iv. Plates (____________________) float on the magma (______________________) v. Plate motion is created by conv ...
... ii. Plate Tectonics = movement of lithospheric plates carrying continents. iii. Plate Boundary = _______________________________________________________ 1. intense geologic activity here iv. Plates (____________________) float on the magma (______________________) v. Plate motion is created by conv ...
Chapter 10-2 - Seafloor Spreading
... Mapping the Oceanic Floor During World War I German scientists introduced the ideas of using sound waves to detect (to find) submarines. In the 1940’s during World War II, scientists began to use sound waves to map the ocean floor. This is sometimes called echo sounding. Sound waves echo off ...
... Mapping the Oceanic Floor During World War I German scientists introduced the ideas of using sound waves to detect (to find) submarines. In the 1940’s during World War II, scientists began to use sound waves to map the ocean floor. This is sometimes called echo sounding. Sound waves echo off ...
LAYERS OF THE EARTH
... rocks form when other types of rock are squeezed together so much by the pressure within the Earth that they become new rocks Marble is a type of metamorphic rock ...
... rocks form when other types of rock are squeezed together so much by the pressure within the Earth that they become new rocks Marble is a type of metamorphic rock ...
Geology Test08
... 30. The movement of tectonic plates is inferred by many scientists to be driven by a. tidal motions in the hydrosphere b. density differences in the troposphere c. convection currents in the asthenosphere d. solidification in the lithosphere 31. In which set are the rock drawings labeled with their ...
... 30. The movement of tectonic plates is inferred by many scientists to be driven by a. tidal motions in the hydrosphere b. density differences in the troposphere c. convection currents in the asthenosphere d. solidification in the lithosphere 31. In which set are the rock drawings labeled with their ...
Geology unit test project
... convergent boundary collides. Fault-block- fault block landforms are formed when large areas of bedrock are widely broken up. And a dome mountain- a dome mountain is also when a convergent boundary collides. ...
... convergent boundary collides. Fault-block- fault block landforms are formed when large areas of bedrock are widely broken up. And a dome mountain- a dome mountain is also when a convergent boundary collides. ...
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.