Hot Spot Demo
... Calculate the rate and direction of motion. Describe features formed by gradual changes such as plate tectonics. Background: Mantle hot spots are areas where magma burns a hole through the crust in the middle of a tectonic plate. Volcanoes form above the hot spot. The interesting thing is that v ...
... Calculate the rate and direction of motion. Describe features formed by gradual changes such as plate tectonics. Background: Mantle hot spots are areas where magma burns a hole through the crust in the middle of a tectonic plate. Volcanoes form above the hot spot. The interesting thing is that v ...
Earthquake test review 8th grade Earthquake Review for
... ____________________8. New crust is added at divergent boundaries. ____________________9. An ocean crustal plate rises at a convergent boundary with a continental plate. ____________________10. A trench forms at the boundary between an ocean plate and a continental plate. ____________________11. Oce ...
... ____________________8. New crust is added at divergent boundaries. ____________________9. An ocean crustal plate rises at a convergent boundary with a continental plate. ____________________10. A trench forms at the boundary between an ocean plate and a continental plate. ____________________11. Oce ...
"Seafloor Spreading" Lab
... and solidifies into new rock. In some places this new seafloor is pulled apart by movement of the asthenosphere under the plates, forming two rock masses which move slowly apart from the ridge. Geologists call this seafloor spreading.! ...
... and solidifies into new rock. In some places this new seafloor is pulled apart by movement of the asthenosphere under the plates, forming two rock masses which move slowly apart from the ridge. Geologists call this seafloor spreading.! ...
8 Grade Science Homework - O. Henry 8th Grade Science
... the plates to move across the top of it, carrying the continents and ocean basins with them as they move. For example, North American and part of the Atlantic Ocean are on the North American Plate. Plates are thought to move because of convection currents in the mantle. Convection currents can cause ...
... the plates to move across the top of it, carrying the continents and ocean basins with them as they move. For example, North American and part of the Atlantic Ocean are on the North American Plate. Plates are thought to move because of convection currents in the mantle. Convection currents can cause ...
File
... - are areas where plates move past each other. Usually are found near ocean ridges Since rock slides past rock, no mountains or Transform boundary volcanoes form. Earthquakes and faults are very common. ...
... - are areas where plates move past each other. Usually are found near ocean ridges Since rock slides past rock, no mountains or Transform boundary volcanoes form. Earthquakes and faults are very common. ...
Remote Sensing of the Earth`s Interior
... • lubrication for plate tectonics – Lower mantle • boundaries at 400 & 670 km • Pressure increases with depth • more dense mineral structures ...
... • lubrication for plate tectonics – Lower mantle • boundaries at 400 & 670 km • Pressure increases with depth • more dense mineral structures ...
Forces in Earth`s Crust
... Some mid-ocean ridges have a valley that runs along their center. Evidence shows that molten material erupts through this valley and then hardens to form the ocean floor. ...
... Some mid-ocean ridges have a valley that runs along their center. Evidence shows that molten material erupts through this valley and then hardens to form the ocean floor. ...
Plate Tectonics Continued
... Pangaea. As we travel through history, the continents move apart and new oceanic crust is formed between the continents. The earth’s magnetic polarity is reversing throughout history as well. Magnetite in the rock will orient with the earth’s polarity until the rock hardens. Show magnetite’s orienta ...
... Pangaea. As we travel through history, the continents move apart and new oceanic crust is formed between the continents. The earth’s magnetic polarity is reversing throughout history as well. Magnetite in the rock will orient with the earth’s polarity until the rock hardens. Show magnetite’s orienta ...
Lecture Slides
... In reality, isostatic compensation doesn’t happen at a point, with an exact mirror image of topography at depth. Often there is regional lithospheric bending to partially accommodate the load, as well as a root. ...
... In reality, isostatic compensation doesn’t happen at a point, with an exact mirror image of topography at depth. Often there is regional lithospheric bending to partially accommodate the load, as well as a root. ...
Continental Drift and Plate Tectonics 02
... However, it is not the continents that are moving, but the “plates” of lithosphere “floating” in effect on the asthenosphere The lithosphere is made up of about 20 plates which move relative to each other in several ways Let’s look at a generalized sketch ...
... However, it is not the continents that are moving, but the “plates” of lithosphere “floating” in effect on the asthenosphere The lithosphere is made up of about 20 plates which move relative to each other in several ways Let’s look at a generalized sketch ...
plate tectonics
... Plates flow around due to Convection Current in asthenosphere Radioactive materials deep in the mantle create hot areas (less dense) Magma force to the surface Discuss: What are convection currents? (Science 8, 9?) ...
... Plates flow around due to Convection Current in asthenosphere Radioactive materials deep in the mantle create hot areas (less dense) Magma force to the surface Discuss: What are convection currents? (Science 8, 9?) ...
PLATE TECTONICS
... FIGURE 3.6 The Pacific Ring of Fire, with its active volcanoes (large red circles) and frequent earthquakes (small black dots), marks plate boundaries where oceanic lithosphere is being recycled. ...
... FIGURE 3.6 The Pacific Ring of Fire, with its active volcanoes (large red circles) and frequent earthquakes (small black dots), marks plate boundaries where oceanic lithosphere is being recycled. ...
Earth, continental drift, plate tectonics, sea floor spreading
... beneath a deepocean trench and back into the mantle; allows part of the ocean floor to sink back into the mantle ...
... beneath a deepocean trench and back into the mantle; allows part of the ocean floor to sink back into the mantle ...
NCEA Level 3 Science (90731) 2012 Assessment Schedule
... Plate subducts under the Pacific Plate. The middle of the South Island is a transform fault with the two plates sliding past each other. The diagram shows the earthquakes getting deeper the further they occur from the plate boundary. This is because as the plate subducts it moves at an angle downwar ...
... Plate subducts under the Pacific Plate. The middle of the South Island is a transform fault with the two plates sliding past each other. The diagram shows the earthquakes getting deeper the further they occur from the plate boundary. This is because as the plate subducts it moves at an angle downwar ...
Plate Tectonics
... More Evidence for Plate Tectonics Earthquake Patterns • Scientists found a close link between deep-focus earthquakes and ocean trenches. • The absence of deep-focus earthquakes along the oceanic ridge system was shown to be consistent with the new theory. ...
... More Evidence for Plate Tectonics Earthquake Patterns • Scientists found a close link between deep-focus earthquakes and ocean trenches. • The absence of deep-focus earthquakes along the oceanic ridge system was shown to be consistent with the new theory. ...
plate boundaries
... Divergent boundaries (the trailing edge of a plate) = plates moving away from each other (this type of boundary is found over the rising part of a convection cell) Convergent boundaries (the leading edge of a plate) = plates that collide with other plates ...
... Divergent boundaries (the trailing edge of a plate) = plates moving away from each other (this type of boundary is found over the rising part of a convection cell) Convergent boundaries (the leading edge of a plate) = plates that collide with other plates ...
Continental Drift and Plate Tectonics
... Earth’s major plates ___________________ major lithospheric plates Plates are in motion and continually changing in shape and _________________ Largest plate is the _____________________ plate Several plates include an entire continent plus a large area of _____________________ Plate Tectonics Earth ...
... Earth’s major plates ___________________ major lithospheric plates Plates are in motion and continually changing in shape and _________________ Largest plate is the _____________________ plate Several plates include an entire continent plus a large area of _____________________ Plate Tectonics Earth ...
Chapter 2
... Sea Floor Spreading • Huge pieces of oceanic crust are separated at the mid-ocean ridges creating cracks or rifts in the crust • When a rift occurs, pressure is released and hot mantle material rises up through the rift • This molten rock pushes the oceanic crust up to form the mid-ocean ridge and ...
... Sea Floor Spreading • Huge pieces of oceanic crust are separated at the mid-ocean ridges creating cracks or rifts in the crust • When a rift occurs, pressure is released and hot mantle material rises up through the rift • This molten rock pushes the oceanic crust up to form the mid-ocean ridge and ...
The world`s main tectonic plates and types of
... mantle from the breakdown of radioactive isotopes. This causes convection in the mantle – hot rocks rise and cold rocks descend. This very slow motion in the solid state transfers stresses to the lithosphere, just as convection in a boiling pan of thick soup will cause the skin to buckle where the c ...
... mantle from the breakdown of radioactive isotopes. This causes convection in the mantle – hot rocks rise and cold rocks descend. This very slow motion in the solid state transfers stresses to the lithosphere, just as convection in a boiling pan of thick soup will cause the skin to buckle where the c ...
~2.6 MB
... sub-slab trenchparallel flow of mantle material, and for a rapid reorientation of this flow at the northern edge of the Pacific plate. ...
... sub-slab trenchparallel flow of mantle material, and for a rapid reorientation of this flow at the northern edge of the Pacific plate. ...
Seismic structure of the northern end of the Ryukyu Trench... southeast of Kyushu, Japan
... The depth of the plate boundary could be estimated by intermittent reflections in the MCS record in Fig. 5(b) to a depth of around 10 km within distances of 180 km from the southwestern end of the profile. Only the region shallower than 5 km could be determined by the first arrival tomographic inver ...
... The depth of the plate boundary could be estimated by intermittent reflections in the MCS record in Fig. 5(b) to a depth of around 10 km within distances of 180 km from the southwestern end of the profile. Only the region shallower than 5 km could be determined by the first arrival tomographic inver ...
What drives the plates
... Slab pull, which appears to be the main driving through the mantle and they only travel force of lithospheric plate movement, is through solids). Between around 100 and 250 convection in the solid state. Movement is km depth is the asthenosphere (or weakcaused when the solid lithospheric plate cools ...
... Slab pull, which appears to be the main driving through the mantle and they only travel force of lithospheric plate movement, is through solids). Between around 100 and 250 convection in the solid state. Movement is km depth is the asthenosphere (or weakcaused when the solid lithospheric plate cools ...
Oceanic trench
The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor. They are also the deepest parts of the ocean floor. Oceanic trenches are a distinctive morphological feature of convergent plate boundaries, along which lithospheric plates move towards each other at rates that vary from a few mm to over ten cm per year. A trench marks the position at which the flexed, subducting slab begins to descend beneath another lithospheric slab. Trenches are generally parallel to a volcanic island arc, and about 200 km (120 mi) from a volcanic arc. Oceanic trenches typically extend 3 to 4 km (1.9 to 2.5 mi) below the level of the surrounding oceanic floor. The greatest ocean depth to be sounded is in the Challenger Deep of the Mariana Trench, at a depth of 11,034 m (36,201 ft) below sea level. Oceanic lithosphere moves into trenches at a global rate of about 3 km2/yr.