Name
... 2. What did Wegener call the one large landmass when all the continents were together? 3. Where does new oceanic lithosphere form (hint: it happens in the ocean)? 4. What type of plate boundary does an earthquake happen at most often (pick only one boundary)? 5. What is the liquid layer of the Earth ...
... 2. What did Wegener call the one large landmass when all the continents were together? 3. Where does new oceanic lithosphere form (hint: it happens in the ocean)? 4. What type of plate boundary does an earthquake happen at most often (pick only one boundary)? 5. What is the liquid layer of the Earth ...
7 Grade: Ch. 10 STUDY GUIDE KEY
... 11. What does the hypothesis of Continental Drift propose? All the continents were once joined in a single landmass that has since drifted apart. 12. What occurs where the oceanic crust bends down toward the mantle at a deep-ocean trench? Subduction 13. These are contained in the lithosphere which f ...
... 11. What does the hypothesis of Continental Drift propose? All the continents were once joined in a single landmass that has since drifted apart. 12. What occurs where the oceanic crust bends down toward the mantle at a deep-ocean trench? Subduction 13. These are contained in the lithosphere which f ...
theme 5: the deeper earth
... of chemically distinct reservoirs while geophysical evidence suggests convection extending over its entire depth. Geochemical observations: isotopic variations of midocean ridge basalts and the continental crust, budgets and fluxes of noble gases, the Earth' s heat production and flow, all suggest a ...
... of chemically distinct reservoirs while geophysical evidence suggests convection extending over its entire depth. Geochemical observations: isotopic variations of midocean ridge basalts and the continental crust, budgets and fluxes of noble gases, the Earth' s heat production and flow, all suggest a ...
Plate Tectonics Tectonics
... of moving continents across globe • Wegner suggested that continents broke through the ocean crust, much like ice breakers cut through ice ...
... of moving continents across globe • Wegner suggested that continents broke through the ocean crust, much like ice breakers cut through ice ...
Plate Tectonics - Manasquan Public Schools
... Seafloor Spreading • 1960 - Mid-Atlantic ridge suggested as origin of new seafloor (spreading center) – Explains “fit” of continents – Mechanism for movement – convection currents in mantle – Then ridges should be hot they are – New crust should become more dense over time it does – Crust furth ...
... Seafloor Spreading • 1960 - Mid-Atlantic ridge suggested as origin of new seafloor (spreading center) – Explains “fit” of continents – Mechanism for movement – convection currents in mantle – Then ridges should be hot they are – New crust should become more dense over time it does – Crust furth ...
Geology 12 Plate Boundaries
... rising magma. These plumes form “hot spots” of active volcanism at the Earth’s surface. Mantle plumes have formed Iceland, the Hawaiian Islands, and Ol’Faithful in Yellowstone Park (USA) ...
... rising magma. These plumes form “hot spots” of active volcanism at the Earth’s surface. Mantle plumes have formed Iceland, the Hawaiian Islands, and Ol’Faithful in Yellowstone Park (USA) ...
PowerPoint Presentation - Oceanic
... that move about the surface of the asthenosphere. Lithosphere- The rigid outer layer of the earth, including the curst and uppermost mantle. Asthenosphere- A layer of hot, weak material located in the mantle between a depth of 100 and 350 kilometers. The rock within this zone is easily deformed. ...
... that move about the surface of the asthenosphere. Lithosphere- The rigid outer layer of the earth, including the curst and uppermost mantle. Asthenosphere- A layer of hot, weak material located in the mantle between a depth of 100 and 350 kilometers. The rock within this zone is easily deformed. ...
Define and discuss on Isostatic Equilibrium Submitted by WWW
... because the material is eroded away, and it does not need to “ride” as low in the mantle. The eroded material is deposited as sediment on the adjacent thinner continental blocks, which increases their weight, and they then sink farther into the plastic asthenosphere. Areas that are tectonically stab ...
... because the material is eroded away, and it does not need to “ride” as low in the mantle. The eroded material is deposited as sediment on the adjacent thinner continental blocks, which increases their weight, and they then sink farther into the plastic asthenosphere. Areas that are tectonically stab ...
Earth`s Interior Quiz 9/9/16
... D. Magnetosphere 5 What causes convection currents to move within the mantle? A. Heat from the core causes material to become less dense and rise towards the surface B. Heat from the sun causes material to become less dense and rise towards the surface C. Heat from the sun causes material to become ...
... D. Magnetosphere 5 What causes convection currents to move within the mantle? A. Heat from the core causes material to become less dense and rise towards the surface B. Heat from the sun causes material to become less dense and rise towards the surface C. Heat from the sun causes material to become ...
Plate Tectonics Study Guide
... 4. List the layers of the Earth starting at the surface and going towards the center. 5. What is ridge push? ...
... 4. List the layers of the Earth starting at the surface and going towards the center. 5. What is ridge push? ...
Brainpop - Earthquakes
... _____ 6. What’s the main cause of most earthquakes? a. pressure from within Earth’s crust b. hurricanes c. human activity d. changes in temperature within Earth’s mantle _____ 7. Why are surface waves more destructive to buildings than the initial seismic wave in an earthquake? a. it creates more su ...
... _____ 6. What’s the main cause of most earthquakes? a. pressure from within Earth’s crust b. hurricanes c. human activity d. changes in temperature within Earth’s mantle _____ 7. Why are surface waves more destructive to buildings than the initial seismic wave in an earthquake? a. it creates more su ...
ppt
... lighter materials rose to the top. Because of this, the crust is made of the lightest materials (rock- basalts and granites) and the core consists of heavy metals (nickel and iron). ...
... lighter materials rose to the top. Because of this, the crust is made of the lightest materials (rock- basalts and granites) and the core consists of heavy metals (nickel and iron). ...
File
... d. Strike-slip mountain 20. Scientists’ knowledge of the Earth’s interior has come primarily from _____C______. a. Studying magnetic reversals in oceanic crust b. Using a system of satellites called the Global Positioning System c. Studying seismic waves generated by earthquakes d. Studying the patt ...
... d. Strike-slip mountain 20. Scientists’ knowledge of the Earth’s interior has come primarily from _____C______. a. Studying magnetic reversals in oceanic crust b. Using a system of satellites called the Global Positioning System c. Studying seismic waves generated by earthquakes d. Studying the patt ...
Water Fluxing - Research at UVU
... 1. Hot mantle rock rises to fill the gap created by the diverging plates. At hot spots, mantle rock rises because it is hotter than surrounding rock, much the way wax rises in a lava lamp. 2. As the hot mantle rock rises, it feels less pressure (it decompresses), yet its temperature doesn't change m ...
... 1. Hot mantle rock rises to fill the gap created by the diverging plates. At hot spots, mantle rock rises because it is hotter than surrounding rock, much the way wax rises in a lava lamp. 2. As the hot mantle rock rises, it feels less pressure (it decompresses), yet its temperature doesn't change m ...
PlateTectonicsJeopardy 2013_2014
... The movement of a fluid, caused by differences in temperature, that transfers heat from one part of the fluid to another. This is believed to cause Earth’s plates to move. ...
... The movement of a fluid, caused by differences in temperature, that transfers heat from one part of the fluid to another. This is believed to cause Earth’s plates to move. ...
Nat Sci 102 Name
... beneath Earth’s surface. This circulation of mantle material causes the continental and oceanic plates to move across Earth’s surface. At various locations on Earth’s surface, we are able to observe plates colliding, plates separating, and plates moving horizontally. The drawing below shows a cross ...
... beneath Earth’s surface. This circulation of mantle material causes the continental and oceanic plates to move across Earth’s surface. At various locations on Earth’s surface, we are able to observe plates colliding, plates separating, and plates moving horizontally. The drawing below shows a cross ...
PowerPoint Presentation - Black Smokers and Blue Ice
... • Typically, by this stage, the water which reaches this nonbuoyant stage represents a 10,000:1 dilution of vent-fluid with ordinary seawater which has been mixed in during the turbulent ascent of the plume. ...
... • Typically, by this stage, the water which reaches this nonbuoyant stage represents a 10,000:1 dilution of vent-fluid with ordinary seawater which has been mixed in during the turbulent ascent of the plume. ...
Convection and the Hemispheric Dichotomy: Any Links, or Just B.S.?
... “It has been suggested that at an early stage in the history of its formation, the Earth was a nearly homogeneous fluid sphere with convective motions of the type we have just described; and, further, that we can infer the existence, at one time, of such motions from the division of the Earth’s surf ...
... “It has been suggested that at an early stage in the history of its formation, the Earth was a nearly homogeneous fluid sphere with convective motions of the type we have just described; and, further, that we can infer the existence, at one time, of such motions from the division of the Earth’s surf ...
Plate Tectonics A . Alfred Wegner 1. Continental drift hypothesis a
... 2. slabs of crust are pushed down into the mantle 3. slab sinks deeper = increase in temperature and pressure drives water from the crust 4. fluids eventually reduce melting point of hot mantle rock enough for melting to begin 5. magma formed slowly migrates upward forming volcanoes ...
... 2. slabs of crust are pushed down into the mantle 3. slab sinks deeper = increase in temperature and pressure drives water from the crust 4. fluids eventually reduce melting point of hot mantle rock enough for melting to begin 5. magma formed slowly migrates upward forming volcanoes ...
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.