Name
... mark structurally weak zones where the ocean floor was being ripped in two lengthwise along the ridge crest. New magma from deep within the Earth rises easily through these weak zones and eventually erupts along the crest of the ridges to create new oceanic crust. This process, later called seafloor ...
... mark structurally weak zones where the ocean floor was being ripped in two lengthwise along the ridge crest. New magma from deep within the Earth rises easily through these weak zones and eventually erupts along the crest of the ridges to create new oceanic crust. This process, later called seafloor ...
Layers of The Earth - Songs for Teaching
... Let me put it in perspective Boiling water is a breeze I bet you ain’t know That’s only 2-1-2 degrees The crust consists of mainly two states First oceanic, second continental plates They float around On the second layer of the Earth All up on the mantle But that's for the second verse And when the ...
... Let me put it in perspective Boiling water is a breeze I bet you ain’t know That’s only 2-1-2 degrees The crust consists of mainly two states First oceanic, second continental plates They float around On the second layer of the Earth All up on the mantle But that's for the second verse And when the ...
Plate Tectonics – Practice Questions and Answers
... 11. mid-oceanic ridges or divergent margins 12. mid-oceanic ridges and hot spots 13. transform 14. divergent 15. Subduction is when one lithospheric plate descends beneath another. 16. As the subducted slab descends to about 100 km water and other volatiles are driven off. The water and volatiles mo ...
... 11. mid-oceanic ridges or divergent margins 12. mid-oceanic ridges and hot spots 13. transform 14. divergent 15. Subduction is when one lithospheric plate descends beneath another. 16. As the subducted slab descends to about 100 km water and other volatiles are driven off. The water and volatiles mo ...
Section 10.3 Plate Tectonics and Igneous Activity
... What provides the mechanism by which mantle rocks melt and plate motions magma is produced? ...
... What provides the mechanism by which mantle rocks melt and plate motions magma is produced? ...
Plate Tectonics - Fort Thomas Independent Schools
... Wegener’s hypothesis was that all the continents were once joined together in a single landmass. Continental drift – The idea that the continents slowly moved over Earth’s surface. ...
... Wegener’s hypothesis was that all the continents were once joined together in a single landmass. Continental drift – The idea that the continents slowly moved over Earth’s surface. ...
Earth`s Layers Unit Study Guide 1) List Earth`s layers in order from
... OXYGEN, SILICON, a higher amount of MAGNESIUM than the crust, and small amounts of IRON and NICKEL. The rock in the mantle is hot enough to flow like a “semi-liquid”. 8) What is the outer core made up of? Mostly IRON and NICKEL in a molten liquid state. ...
... OXYGEN, SILICON, a higher amount of MAGNESIUM than the crust, and small amounts of IRON and NICKEL. The rock in the mantle is hot enough to flow like a “semi-liquid”. 8) What is the outer core made up of? Mostly IRON and NICKEL in a molten liquid state. ...
PRESENTSS
... We can further divide the crust into Continental and Oceanic types based on their composition and densities. ...
... We can further divide the crust into Continental and Oceanic types based on their composition and densities. ...
Ch. 9 Plate Tectonics: Study Guide
... At what type of plate boundary do plates move apart, resulting in the upwelling of material from the mantle to ...
... At what type of plate boundary do plates move apart, resulting in the upwelling of material from the mantle to ...
EarthComm_c2_esyl
... The internal structure of Earth contains a solid inner core, a liquid (molten) outer core, a deformable solid mantle, and an outer solid crust. Continental crust forms Earth’s continents. It is generally 30–50 km thick, and most of it is very old. Oceanic crust is only 5–10 km thick, and it is relat ...
... The internal structure of Earth contains a solid inner core, a liquid (molten) outer core, a deformable solid mantle, and an outer solid crust. Continental crust forms Earth’s continents. It is generally 30–50 km thick, and most of it is very old. Oceanic crust is only 5–10 km thick, and it is relat ...
Do mantle plumes exist?
... The formation of these volcanic islands is related to the occurrence of long-lived, stationary hot spots within the mantle (see Figure 1 above). The hot spots create localised plumes of hot, rising mantle material. As the plume rises towards the base of the lithosphere, the reduction in pressure al ...
... The formation of these volcanic islands is related to the occurrence of long-lived, stationary hot spots within the mantle (see Figure 1 above). The hot spots create localised plumes of hot, rising mantle material. As the plume rises towards the base of the lithosphere, the reduction in pressure al ...
Student worksheet for The Theory of Plate Tectonics
... 35. The ___________ ______________ _____________ is the longest topographic feature on Earth’s surface. 36. A deep, narrow valley on the summit of the oceanic ridge is called a ______________ . 37. Sea water flowing through hot, volcanic rock is called _____________. ...
... 35. The ___________ ______________ _____________ is the longest topographic feature on Earth’s surface. 36. A deep, narrow valley on the summit of the oceanic ridge is called a ______________ . 37. Sea water flowing through hot, volcanic rock is called _____________. ...
Assignment with suggested readings
... Scientific Debate: The Origin of Melting Anomalies Locations on Earth where volcanism occurs away from plate margins (e.g., Hawaii), or where the volume of volcanism is greater than expected at a plate margin (e.g., Iceland), are called hotspots, or more generically melting anomalies. A significant ...
... Scientific Debate: The Origin of Melting Anomalies Locations on Earth where volcanism occurs away from plate margins (e.g., Hawaii), or where the volume of volcanism is greater than expected at a plate margin (e.g., Iceland), are called hotspots, or more generically melting anomalies. A significant ...
Earth`s Layers Model Materials 2 paper plates scissors 1 brad set of
... 1. Take the top plate template and trace onto one of your paper plates. (Be sure to make a dot for the center.) 2. Cut out the small wedge for your top plate. 3. Using the hole in your top plate, mark the center of your bottom plate. 4. Using the wedge you cut out, divide your bottom plate into 4 eq ...
... 1. Take the top plate template and trace onto one of your paper plates. (Be sure to make a dot for the center.) 2. Cut out the small wedge for your top plate. 3. Using the hole in your top plate, mark the center of your bottom plate. 4. Using the wedge you cut out, divide your bottom plate into 4 eq ...
Plate Tectonics Part 1-maybe Jan 29
... The crust and upper mantle is made up of plates. The crust and upper mantle is called the lithosphere Scientists believe that the plates move about 2 inches per year. The lithosphere is broken into giant plates that fit around the globe like puzzle pieces. they slide on top of a somewhat fluid part ...
... The crust and upper mantle is made up of plates. The crust and upper mantle is called the lithosphere Scientists believe that the plates move about 2 inches per year. The lithosphere is broken into giant plates that fit around the globe like puzzle pieces. they slide on top of a somewhat fluid part ...
Geology Module: Seismic Interior Lecture Outline
... 2. Chains of volcanoes mark plate movement F. Measuring plate motion 1. By using hot spot “tracks” like those of the Hawaiian Island–Emperor Seamount chain 2. Using space-age technology to directly measure the relative motion of plates a. Very Long Baseline Interferometry (VLBI) b. Global Positionin ...
... 2. Chains of volcanoes mark plate movement F. Measuring plate motion 1. By using hot spot “tracks” like those of the Hawaiian Island–Emperor Seamount chain 2. Using space-age technology to directly measure the relative motion of plates a. Very Long Baseline Interferometry (VLBI) b. Global Positionin ...
Earth Structure
... Acid/Intermediate composition. On average 30 km thick but can be up to 90km thick in mountain ranges. Density of 2.7 g/cm3 Will not sink at subduction zones. Old: 4 billion (Precambrian) to Present ...
... Acid/Intermediate composition. On average 30 km thick but can be up to 90km thick in mountain ranges. Density of 2.7 g/cm3 Will not sink at subduction zones. Old: 4 billion (Precambrian) to Present ...
Geology- Module 7
... approximately 240 million years ago. • Alfred Wegner first created continental drift theory which stated that the continents drifted apart from this land mass into their present day location. He used plant/animal fossil evidence to help support his theory. • Eventually, Plate Tectonic theory was dev ...
... approximately 240 million years ago. • Alfred Wegner first created continental drift theory which stated that the continents drifted apart from this land mass into their present day location. He used plant/animal fossil evidence to help support his theory. • Eventually, Plate Tectonic theory was dev ...
Skills Worksheet
... a. uplift. c. faulting. b. folding. d. subsidence. _____ 9. The type of fault in which the hanging wall moves up relative to the footwall is called a a. strike-slip fault. c. normal fault. b. fault-block fault. d. reverse fault. _____ 10. The type of mountain that forms when rock layers are squeezed ...
... a. uplift. c. faulting. b. folding. d. subsidence. _____ 9. The type of fault in which the hanging wall moves up relative to the footwall is called a a. strike-slip fault. c. normal fault. b. fault-block fault. d. reverse fault. _____ 10. The type of mountain that forms when rock layers are squeezed ...
Science 10 - Mr. Laura/ Ms. Reynolds Fleetwood Park Secondary
... 1. Tectonic plates make up the lithosphere, which floats on the asthenosphere • The ____________is the crust and upper portion of the mantle. • The ____________is the molten layer of the upper mantle. 2. There are about 12 major tectonic plates and many smaller ones. • Tectonic plates are all moving ...
... 1. Tectonic plates make up the lithosphere, which floats on the asthenosphere • The ____________is the crust and upper portion of the mantle. • The ____________is the molten layer of the upper mantle. 2. There are about 12 major tectonic plates and many smaller ones. • Tectonic plates are all moving ...
Evidence of continental drift
... Paleomagnetism- shows a pattern of identical pole reversal on both sides of a spreading center. The Dwyka Tillite (rocks layers shown) correlates with similar rocks in South America, India, Australia, and Antarctica. Alfred Wegener considered this uplifted rock layer to be evidence of continental dr ...
... Paleomagnetism- shows a pattern of identical pole reversal on both sides of a spreading center. The Dwyka Tillite (rocks layers shown) correlates with similar rocks in South America, India, Australia, and Antarctica. Alfred Wegener considered this uplifted rock layer to be evidence of continental dr ...
E. Earthquake destruction 1. Factors that determine structural
... 1. Roughly 7 km (5 miles) in oceanic regions 2. Continental crust averages 35-40 km (25 miles) 3. Exceeds 70 km (40 miles) in some mountainous regions c. Two parts 1. Continental crust a. Upper crust composed of granitic rocks b. Lower crust is more akin to basalt c. Average density is about 2.7 g/c ...
... 1. Roughly 7 km (5 miles) in oceanic regions 2. Continental crust averages 35-40 km (25 miles) 3. Exceeds 70 km (40 miles) in some mountainous regions c. Two parts 1. Continental crust a. Upper crust composed of granitic rocks b. Lower crust is more akin to basalt c. Average density is about 2.7 g/c ...
Mantle plume
A mantle plume is a mechanism proposed in 1971 to explain volcanic regions of the earth that were not thought to be explicable by the then-new theory of plate tectonics. Some such volcanic regions lie far from tectonic plate boundaries, for example, Hawaii. Others represent unusually large-volume volcanism, whether on plate boundaries, e.g. Iceland, or basalt floods such as the Deccan or Siberian traps.A mantle plume is posited to exist where hot rock nucleates at the core-mantle boundary and rises through the Earth's mantle becoming a diapir in the Earth's crust. The currently active volcanic centers are known as ""hot spots"". In particular, the concept that mantle plumes are fixed relative to one another, and anchored at the core-mantle boundary, was thought to provide a natural explanation for the time-progressive chains of older volcanoes seen extending out from some such hot spots, such as the Hawaiian–Emperor seamount chain.The hypothesis of mantle plumes from depth is not universally accepted as explaining all such volcanism. It has required progressive hypothesis-elaboration leading to variant propositions such as mini-plumes and pulsing plumes. Another hypothesis for unusual volcanic regions is the ""Plate model"". This proposes shallower, passive leakage of magma from the mantle onto the Earth's surface where extension of the lithosphere permits it, attributing most volcanism to plate tectonic processes, with volcanoes far from plate boundaries resulting from intraplate extension.