Name - cloudfront.net
... Why do earthquakes occur where they do? What causes earthquakes? Are earthquakes related to any earth structures? The earth’s outer shell of rock is believed to be made up of a number of rigid plates, called Lithospheric plates, which are from 80 km to 160 km thick. The plates are made up of the two ...
... Why do earthquakes occur where they do? What causes earthquakes? Are earthquakes related to any earth structures? The earth’s outer shell of rock is believed to be made up of a number of rigid plates, called Lithospheric plates, which are from 80 km to 160 km thick. The plates are made up of the two ...
Full Unit Plan (MS Word)
... 1. Continents are smaller now than they were in the past. 2. The size of the earth is gradually increasing over time because of seafloor spreading. 3. Tectonic plates float on melted magma that is just below the surface of the earth. 4. The Earth’s mantle is made up of molten rock. 5. The edge of a ...
... 1. Continents are smaller now than they were in the past. 2. The size of the earth is gradually increasing over time because of seafloor spreading. 3. Tectonic plates float on melted magma that is just below the surface of the earth. 4. The Earth’s mantle is made up of molten rock. 5. The edge of a ...
STRUCTURE OF EARTH
... One way that mantle peridotites may melt is by plastic flow of large regions toward the surface (i.e., lower pressures). ...
... One way that mantle peridotites may melt is by plastic flow of large regions toward the surface (i.e., lower pressures). ...
Hot mantle drives elevation, volcanism along mid-ocean
... depths of the mantle influences the contours of the The mid-ocean ridges provide geologists with a Earth's crust. window to the interior of the Earth. The ridges form when mantle material melts, rises into the cracks Mid-ocean ridges form at the boundaries between between tectonic plates, and solidi ...
... depths of the mantle influences the contours of the The mid-ocean ridges provide geologists with a Earth's crust. window to the interior of the Earth. The ridges form when mantle material melts, rises into the cracks Mid-ocean ridges form at the boundaries between between tectonic plates, and solidi ...
Unit 1 – Plate Tectonics – april 2012GLC
... found an undersea mountain range. Oceanographers determined that this range ran the entire length of the ocean, right up the middle. Named the Mid-Atlantic Ridge, scientists found it had a deep, wide canyon running the length in its centre. This deep crack is called a rift valley. Other mid-ocean ri ...
... found an undersea mountain range. Oceanographers determined that this range ran the entire length of the ocean, right up the middle. Named the Mid-Atlantic Ridge, scientists found it had a deep, wide canyon running the length in its centre. This deep crack is called a rift valley. Other mid-ocean ri ...
1 Final Exam, Earth 50 Fall 2006
... Yes. The sediments have zircons with ages similar to the 1.6-1.8Ga source area as the site passes closest to this source. b. Geologists have identified many “exotic terranes” along the western margin of North America like the rocks on Vancouver Island. How might an exotic terrane be recognized in th ...
... Yes. The sediments have zircons with ages similar to the 1.6-1.8Ga source area as the site passes closest to this source. b. Geologists have identified many “exotic terranes” along the western margin of North America like the rocks on Vancouver Island. How might an exotic terrane be recognized in th ...
midterm review sheet
... 5.) Be able to explain Alfred Wegener’s Theory of Continental Drift. Include evidence that he found that supported his theory. 6.) Understand the Scientific Method and how it was used to determine different theories such as Continental Drift and Plate Tectonics. ...
... 5.) Be able to explain Alfred Wegener’s Theory of Continental Drift. Include evidence that he found that supported his theory. 6.) Understand the Scientific Method and how it was used to determine different theories such as Continental Drift and Plate Tectonics. ...
Zaliapin and Kovchegov, 2011
... Thick cold lithosphere in subduction and collision environments: (i) high proportion of isolated events, (ii) enhanced aftershock production Illustration by Jose F. Vigil from This Dynamic Planet -- a wall map produced jointly by the U.S. Geological Survey, the Smithsonian Institution, and the U.S. ...
... Thick cold lithosphere in subduction and collision environments: (i) high proportion of isolated events, (ii) enhanced aftershock production Illustration by Jose F. Vigil from This Dynamic Planet -- a wall map produced jointly by the U.S. Geological Survey, the Smithsonian Institution, and the U.S. ...
Unit 3 - Dynamic Crust Review Powerpoint
... 2. The Explorer Ridge is the boundary between the Explorer Plate and which other plate? A. North American B. Pacific Plate C. Juan de Fuca Plate D. Gorda Plate ...
... 2. The Explorer Ridge is the boundary between the Explorer Plate and which other plate? A. North American B. Pacific Plate C. Juan de Fuca Plate D. Gorda Plate ...
Influence of Membrane Stress on Seafloor Spreading
... Figure 3. (A) While triggering numerous earthquakes, the tide-generating force can also result in fracturing at mid-ocean ridges and a surge in lava from the mantle. This causes plates to move and leads to seafloor spreading, causing plate motion. (B) The membrane stress in the crust is caused by th ...
... Figure 3. (A) While triggering numerous earthquakes, the tide-generating force can also result in fracturing at mid-ocean ridges and a surge in lava from the mantle. This causes plates to move and leads to seafloor spreading, causing plate motion. (B) The membrane stress in the crust is caused by th ...
The Cache Creek Melange
... (argillite, chert, in black) and limestone rock units (brick pattern) during the period of geologic time where there was an active subduction zone underneath modern day Cache Creek (Mathews and Monger, ...
... (argillite, chert, in black) and limestone rock units (brick pattern) during the period of geologic time where there was an active subduction zone underneath modern day Cache Creek (Mathews and Monger, ...
8 The dynamic Earth
... crust sinks below the less dense continental crust. This movement causes powerful earthquakes and creates explosive volcanoes when the oceanic crust melts and cold sea water meets hot magma. The boundaries between converging plates are called destructive plate boundaries because solid ocean crust me ...
... crust sinks below the less dense continental crust. This movement causes powerful earthquakes and creates explosive volcanoes when the oceanic crust melts and cold sea water meets hot magma. The boundaries between converging plates are called destructive plate boundaries because solid ocean crust me ...
Final Exam 345
... Subject area: Honors Earth and Environmental Science Essential Standards to cover: EEn.2.1.1 Explain how plate tectonics, volcanoes, and earthquakes impact the lithosphere EEn.2.1.2 Predict the locations of volcanoes, earthquakes, and faults based on information contained in a variety of maps EEn.2. ...
... Subject area: Honors Earth and Environmental Science Essential Standards to cover: EEn.2.1.1 Explain how plate tectonics, volcanoes, and earthquakes impact the lithosphere EEn.2.1.2 Predict the locations of volcanoes, earthquakes, and faults based on information contained in a variety of maps EEn.2. ...
Haley Z
... released as energy which moves through the Earth in the form of waves, which we feel and call an earthquake. ...
... released as energy which moves through the Earth in the form of waves, which we feel and call an earthquake. ...
Composition Physical Properties
... One unusual type is a carbonaceous chondrite, which can contain up to 5% organic carbon, i.e. hydrocarbons, amino acids. ...
... One unusual type is a carbonaceous chondrite, which can contain up to 5% organic carbon, i.e. hydrocarbons, amino acids. ...
Processes that Shape the Surface of Earth
... would cover the continents in perhaps as short a period as 25 million years. Waves would attack the drowned continents, further eroding them until the highest topography would be more than 80 m below the ocean surface. If coral reefs continued to exist, they would be the only lands above sea level. ...
... would cover the continents in perhaps as short a period as 25 million years. Waves would attack the drowned continents, further eroding them until the highest topography would be more than 80 m below the ocean surface. If coral reefs continued to exist, they would be the only lands above sea level. ...
DP - quakes
... presentations as a way to prepare for this event. Suggest that participants first enter the event topics into their PowerPoint presentations similar to an outline. As participants search the web for specific topics they will frequently find information about other topics included in the event. T ...
... presentations as a way to prepare for this event. Suggest that participants first enter the event topics into their PowerPoint presentations similar to an outline. As participants search the web for specific topics they will frequently find information about other topics included in the event. T ...
Dynamic Planet power point 2017
... presentations as a way to prepare for this event. Suggest that participants first enter the event topics into their PowerPoint presentations similar to an outline. As participants search the web for specific topics they will frequently find information about other topics included in the event. T ...
... presentations as a way to prepare for this event. Suggest that participants first enter the event topics into their PowerPoint presentations similar to an outline. As participants search the web for specific topics they will frequently find information about other topics included in the event. T ...
Chapter 11 Mountain Building
... • Mountains that are formed primarily by compressional stresses, which create folds in the rock layers are called folded mountains. • Compressional stress is the major factor that forms folded mountains. • Fault-block mountains form as large blocks of crust are uplifted and tilted along normal fault ...
... • Mountains that are formed primarily by compressional stresses, which create folds in the rock layers are called folded mountains. • Compressional stress is the major factor that forms folded mountains. • Fault-block mountains form as large blocks of crust are uplifted and tilted along normal fault ...
Ch9.1 - What Is the Ocean Floor Like (Part 1)
... continents and the land beneath the ocean. s The continents are made of continental crust. s Continental crust is made mostly of granite. s It is about 20-30 miles thick. s Oceanic crust is thinner and denser than continental crust. s The crust below the ocean is about 3-6 miles thick and is made mo ...
... continents and the land beneath the ocean. s The continents are made of continental crust. s Continental crust is made mostly of granite. s It is about 20-30 miles thick. s Oceanic crust is thinner and denser than continental crust. s The crust below the ocean is about 3-6 miles thick and is made mo ...
Magnetic Reversal LAB 2017
... tilted 11.3 degrees away from the Earth’s axis of rotation. And these magnetic poles are known to move around the surface, wandering as much as 15 km every year. Scientists think that the Earth’s magnetic field is generated by electrical currents flowing in the liquid outer core deep inside the Eart ...
... tilted 11.3 degrees away from the Earth’s axis of rotation. And these magnetic poles are known to move around the surface, wandering as much as 15 km every year. Scientists think that the Earth’s magnetic field is generated by electrical currents flowing in the liquid outer core deep inside the Eart ...
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.