Ch 12.1
... • Wegener’s evidence for continental drift did not explain how entire continents could change locations. new scientific equipment allowed scientists to measure the slow but steady drift of Earth’s tectonic plates. earthquakes and volcanoes appear in certain patterns along the edges of tectonic p ...
... • Wegener’s evidence for continental drift did not explain how entire continents could change locations. new scientific equipment allowed scientists to measure the slow but steady drift of Earth’s tectonic plates. earthquakes and volcanoes appear in certain patterns along the edges of tectonic p ...
the dynamic crust - Discover Earth Science
... asthenosphere in a manner that would bring material from the mantle up to the crust 3. The sea floor is spreading out from MARRS - the age of the floor supports this idea 4. Molten material from the asthenosphere is oozing up through a crack (rift or tear) in the Atlantic Ocean floor - direct observ ...
... asthenosphere in a manner that would bring material from the mantle up to the crust 3. The sea floor is spreading out from MARRS - the age of the floor supports this idea 4. Molten material from the asthenosphere is oozing up through a crack (rift or tear) in the Atlantic Ocean floor - direct observ ...
Earth Science: CST Review , Day #4, CST Released Questions #28
... 1. Which of the following provides evidence for plate tectonics? ______________________________________ 2. The youngest rocks on the ocean floor are typically located near what feature? _________________ 3. A rift valley is evidence of which kind of plate boundary? ___________________ 4. The converg ...
... 1. Which of the following provides evidence for plate tectonics? ______________________________________ 2. The youngest rocks on the ocean floor are typically located near what feature? _________________ 3. A rift valley is evidence of which kind of plate boundary? ___________________ 4. The converg ...
Plate Tectonics Constructive Plate Margins
... Plate Tectonics Constructive Plate Margins Constructive plate margins, this is where there are two plates moving away from each other causing new oceanic crust to be formed and mid-ocean ridges are created by the build up of molten rock on the sea floor due to the mantle building up. This new crust ...
... Plate Tectonics Constructive Plate Margins Constructive plate margins, this is where there are two plates moving away from each other causing new oceanic crust to be formed and mid-ocean ridges are created by the build up of molten rock on the sea floor due to the mantle building up. This new crust ...
Document
... fault are under pressure and get locked together. When too much pressure builds up, the rocks suddenly slide past each other and release the pressure. The result is an earthquake (violent shaking on the Earth’s crust). The San Andreas Fault is a transform boundary that connects the Pacific plate wit ...
... fault are under pressure and get locked together. When too much pressure builds up, the rocks suddenly slide past each other and release the pressure. The result is an earthquake (violent shaking on the Earth’s crust). The San Andreas Fault is a transform boundary that connects the Pacific plate wit ...
Monsoons spinning the Earth`s plates - study
... annually, sped up motion in the Indian plate by almost one centimetre per year. “The 100km-thick outer shell of Earth, the lithosphere, is divided into pieces called tectonic plates. Plates move in different directions at speeds in the order of centimetres per year, comparable to the speed of finger ...
... annually, sped up motion in the Indian plate by almost one centimetre per year. “The 100km-thick outer shell of Earth, the lithosphere, is divided into pieces called tectonic plates. Plates move in different directions at speeds in the order of centimetres per year, comparable to the speed of finger ...
Plate Tectonics - NagelBeelmanScience
... Alfred Wegener, who was a geologist and a meteorologist, proposed the 1st theory of continental drift. He made an hypostasis that about 200 million years ago there was one large supercontinent consisting of all of Earth’s land masses, and it was called Pangaea which means all Earth and was there in ...
... Alfred Wegener, who was a geologist and a meteorologist, proposed the 1st theory of continental drift. He made an hypostasis that about 200 million years ago there was one large supercontinent consisting of all of Earth’s land masses, and it was called Pangaea which means all Earth and was there in ...
ch 7 study guide Answers
... 13. What type of boundary creates the Mid-Ocean ridge? Divergent Plate Boundary 14. What type of fault is the San Andreas Fault in California? Transform Plate Boundary 15. How do convergent boundaries move? They Collide 16. How do divergent boundaries move? They Separate 17. How do transform boundar ...
... 13. What type of boundary creates the Mid-Ocean ridge? Divergent Plate Boundary 14. What type of fault is the San Andreas Fault in California? Transform Plate Boundary 15. How do convergent boundaries move? They Collide 16. How do divergent boundaries move? They Separate 17. How do transform boundar ...
EES 202 - Geological processes powerpoint
... LAYERS OF THE EARTHwhat’s it made up of? • Crust – thin, solid rock. Broken into about 20 plates. • Mantle – molten rock (magma), heated from the core and moving in convection currents which moves the plates. • Outer core – mainly molten iron and nickel. • Inner core – solid iron due to immense pre ...
... LAYERS OF THE EARTHwhat’s it made up of? • Crust – thin, solid rock. Broken into about 20 plates. • Mantle – molten rock (magma), heated from the core and moving in convection currents which moves the plates. • Outer core – mainly molten iron and nickel. • Inner core – solid iron due to immense pre ...
Powerpoint Presentation Physical Geology, 10th ed.
... • Plate Tectonics Theory – Originally proposed in the late 1960s – Included new understanding of the seafloor and explanation of driving force – Describes lithosphere as being broken into plates that are in motion – Explains origin and distribution of volcanoes, fault zones and mountain belts ...
... • Plate Tectonics Theory – Originally proposed in the late 1960s – Included new understanding of the seafloor and explanation of driving force – Describes lithosphere as being broken into plates that are in motion – Explains origin and distribution of volcanoes, fault zones and mountain belts ...
Topic 6 Earth`s Internal Structure and Tectonic Process Geography
... Eventually led to theory of plate tectonics Explains processes such as: lithospheric plate movements sea-floor spreading subduction zones orogenic activity crustal deformation earthquakes volcanism ...
... Eventually led to theory of plate tectonics Explains processes such as: lithospheric plate movements sea-floor spreading subduction zones orogenic activity crustal deformation earthquakes volcanism ...
motions.of.tectonic.plates.activiity - wikifuller
... a. subduction zones c. convection currents b. transform faults d. divergent boundaries 2. The crust and upper mantle make up Earth's _____. a. lithosphere c. shield b. asthenosphere d. continents 3. The boundaries between two colliding plates are called _____. a. divergent c. a transform fault b. co ...
... a. subduction zones c. convection currents b. transform faults d. divergent boundaries 2. The crust and upper mantle make up Earth's _____. a. lithosphere c. shield b. asthenosphere d. continents 3. The boundaries between two colliding plates are called _____. a. divergent c. a transform fault b. co ...
Lecture Notes on Convection and Plate Tectonics
... Lecture Notes on Convection and Plate Tectonics © 2002 Ann Bykerk-Kauffman, Dept. of Geological and Environmental Sciences, California State University, Chico* ...
... Lecture Notes on Convection and Plate Tectonics © 2002 Ann Bykerk-Kauffman, Dept. of Geological and Environmental Sciences, California State University, Chico* ...
Notes: Seafloor Spreading In the early 1900`s, the
... ____________________while the crust ____________________ the trenches is ____________________. Seafloor Spreading Seafloor-spreading is the idea that explains how new oceanic crust is formed at ________________________________________and destroyed at ________________________________________. _ ...
... ____________________while the crust ____________________ the trenches is ____________________. Seafloor Spreading Seafloor-spreading is the idea that explains how new oceanic crust is formed at ________________________________________and destroyed at ________________________________________. _ ...
Plates on the Move
... • Hess proposed that hot, less dense material below Earth’s crust rises toward the surface at the mid-ocean ridges. • Then, it flows sideways, carrying the seafloor away from the ridge in both directions. Picture from http://library.thinkquest.org/17457/platetectonics/4.php ...
... • Hess proposed that hot, less dense material below Earth’s crust rises toward the surface at the mid-ocean ridges. • Then, it flows sideways, carrying the seafloor away from the ridge in both directions. Picture from http://library.thinkquest.org/17457/platetectonics/4.php ...
TYPES OF CRUSTAL MATERIAL
... Differences in chemical composition between the two types of rocks accounts for the different appearance and density. The difference in density is critical in understanding plate tectonics. ...
... Differences in chemical composition between the two types of rocks accounts for the different appearance and density. The difference in density is critical in understanding plate tectonics. ...
Earth`s Structure - SD43 Teacher Sites
... • This extends another approx 1500Km into Earth. • It is believed that the inner core is made from mostly solid iron as well as nickel, silicon and carbon. • It is approx 5000 - 5700ºC ...
... • This extends another approx 1500Km into Earth. • It is believed that the inner core is made from mostly solid iron as well as nickel, silicon and carbon. • It is approx 5000 - 5700ºC ...
10-2 Directed Reading
... 27. Describe the rock that forms when magma cools to form new oceanic lithosphere. _______________________________________________________________ _______________________________________________________________ 28. A narrow valley that forms where the plates separate at a divergent boundary is calle ...
... 27. Describe the rock that forms when magma cools to form new oceanic lithosphere. _______________________________________________________________ _______________________________________________________________ 28. A narrow valley that forms where the plates separate at a divergent boundary is calle ...
Geology Library Notes Wk8.cwk (WP)
... In 1620, shortly after explorers first created maps of the new world, Francis Bacon noticed how nicely South America and Africa fit together. In 1858 Antonio Snider showed how these and other continents fit together like a jigsaw puzzle. Perhaps the continents were once together and ...
... In 1620, shortly after explorers first created maps of the new world, Francis Bacon noticed how nicely South America and Africa fit together. In 1858 Antonio Snider showed how these and other continents fit together like a jigsaw puzzle. Perhaps the continents were once together and ...
Slide 1
... – Metamorphic- changes form, P or T. Particles lined up maybe bands (foliated rock) – Rock cycle ...
... – Metamorphic- changes form, P or T. Particles lined up maybe bands (foliated rock) – Rock cycle ...
PLATE TECTONICS - New Jersey City University
... aligns on existing magnetic field Dip indicates old magnetic pole position Apparent motion of north magnetic pole through time – Split in path – indicates continents split apart ...
... aligns on existing magnetic field Dip indicates old magnetic pole position Apparent motion of north magnetic pole through time – Split in path – indicates continents split apart ...
Desk Copy Changing Earth Common Assessment
... a. Most shallow earthquakes occur along subduction zones. b. Most earthquakes occur along transform fault boundaries. c. Most deep earthquakes occur along divergent plate boundaries. d. Most earthquakes occur in the middle of oceans and along convergent boundaries. 27. Alfred Wegener proposed the __ ...
... a. Most shallow earthquakes occur along subduction zones. b. Most earthquakes occur along transform fault boundaries. c. Most deep earthquakes occur along divergent plate boundaries. d. Most earthquakes occur in the middle of oceans and along convergent boundaries. 27. Alfred Wegener proposed the __ ...
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.