Continental Drift 1 The hypothesis that all the continents were once
... sinks beneath a deep-ocean trench and back into mantle. ...
... sinks beneath a deep-ocean trench and back into mantle. ...
Plate Tectonics Notes
... 2) Asthenosphere (weak sphere)—inner layer, including the rest of the upper mantle (it doesn’t include the lower mantle or core!) - Hotter than the lithosphere - very close to the melting point, so it’s very plastic (viscous), flows slowly—it’s also more dense The lithosphere “floats” on the Astheno ...
... 2) Asthenosphere (weak sphere)—inner layer, including the rest of the upper mantle (it doesn’t include the lower mantle or core!) - Hotter than the lithosphere - very close to the melting point, so it’s very plastic (viscous), flows slowly—it’s also more dense The lithosphere “floats” on the Astheno ...
Plate Tectonics
... • Convection currents are the result of uneven heating inside the mantle resulting in the melting of rock; convection, eruption and flow of magma; and the movement of crustal plates. • Rock layers are affected by the folding, breaking, and uplifting of rock layers due to plate motion. • The movement ...
... • Convection currents are the result of uneven heating inside the mantle resulting in the melting of rock; convection, eruption and flow of magma; and the movement of crustal plates. • Rock layers are affected by the folding, breaking, and uplifting of rock layers due to plate motion. • The movement ...
nonsequitur - Earth and Atmospheric Sciences
... reference frame with respect to which absolute plate motions are inferred ...
... reference frame with respect to which absolute plate motions are inferred ...
Earth has several layers
... “Pangaea”- comes from the Greek word meaning “all lands.” This Giant continent reaches from Pole to pole and was centered where Africa lies today. ...
... “Pangaea”- comes from the Greek word meaning “all lands.” This Giant continent reaches from Pole to pole and was centered where Africa lies today. ...
Earth has several layers
... “Pangaea”- comes from the Greek word meaning “all lands.” This Giant continent reaches from Pole to pole and was centered where Africa lies today. ...
... “Pangaea”- comes from the Greek word meaning “all lands.” This Giant continent reaches from Pole to pole and was centered where Africa lies today. ...
indirect evidence
... therefore it looks much different today than it did millions of years ago. • Can we dig to the center of Earth? Explain why it is or is not possible. No way! The extreme conditions within Earth’s interior prevent scientists from exploring. ...
... therefore it looks much different today than it did millions of years ago. • Can we dig to the center of Earth? Explain why it is or is not possible. No way! The extreme conditions within Earth’s interior prevent scientists from exploring. ...
Chapter 7: Circulation of the Solid Earth: Plate Tectonics – ppt
... Ocean sediments: sediments that were washed in through rivers, as well as shells from plankton near the ocean surface, that settle through the water column and settle on the ocean floor. Continental sediments: from weathering on mountains, sediments accumulate in low lying basins; also, largely from ...
... Ocean sediments: sediments that were washed in through rivers, as well as shells from plankton near the ocean surface, that settle through the water column and settle on the ocean floor. Continental sediments: from weathering on mountains, sediments accumulate in low lying basins; also, largely from ...
Chapter 2 Notes - Todd S. Thuma Homepage
... 2. Absence of land allows unimpeded circumpolar circulation 3. Coldest, densest water flows northward beneath other oceans 4. Thick ice sheets (100-200 m thick) G. Marginal Ocean Basins 1. Large, partially isolated seas (> 2 km deep) near continents 2. Three types a. Isolated by island arcs – Bering ...
... 2. Absence of land allows unimpeded circumpolar circulation 3. Coldest, densest water flows northward beneath other oceans 4. Thick ice sheets (100-200 m thick) G. Marginal Ocean Basins 1. Large, partially isolated seas (> 2 km deep) near continents 2. Three types a. Isolated by island arcs – Bering ...
Earth`s Structure
... Plate tectonics 14’s major rigid plates moved by caramel like asthenosphere Major evidence (along with Wegener’s) Magnetic reversals along spreading centers in mid-oceanic ...
... Plate tectonics 14’s major rigid plates moved by caramel like asthenosphere Major evidence (along with Wegener’s) Magnetic reversals along spreading centers in mid-oceanic ...
Plate Tectonics
... Continental Drift Fit together Similar types of rocks and climatic conditions ...
... Continental Drift Fit together Similar types of rocks and climatic conditions ...
Chapteer 1 study guide rev
... Chapter 1 you review the concept Know the name and location of the world’s oceans Be able to explain the difference between an ocean and a sea Be able to describe how the ocean has been explored, by which cultures, and for what reasons Be able to describe the 4 cultures Be able to ex ...
... Chapter 1 you review the concept Know the name and location of the world’s oceans Be able to explain the difference between an ocean and a sea Be able to describe how the ocean has been explored, by which cultures, and for what reasons Be able to describe the 4 cultures Be able to ex ...
a. asthenosphere b. lithosphere c. mesosphere d. outer core e. inner
... 6. Oceanic crust is denser than the continental crust because it contains more of which three elements? _________________________________________________________________________ 7. The mantle is composed of more of the element ______________________ than the crust is. 8. Why do scientists look to th ...
... 6. Oceanic crust is denser than the continental crust because it contains more of which three elements? _________________________________________________________________________ 7. The mantle is composed of more of the element ______________________ than the crust is. 8. Why do scientists look to th ...
as a PDF
... top, which creates an excess of mass. When cold matter sinks, it drags the surrounding mass down, creating a decrease in mass. Hager’s worked helped to show that hot spots in the mantle push continents up and cold spots, which are created by sinking subducting plates, pull continents down (Gurnis, 2 ...
... top, which creates an excess of mass. When cold matter sinks, it drags the surrounding mass down, creating a decrease in mass. Hager’s worked helped to show that hot spots in the mantle push continents up and cold spots, which are created by sinking subducting plates, pull continents down (Gurnis, 2 ...
Composition of Earth – Encarta
... The hydrosphere consists chiefly of the oceans, but technically includes all water surfaces in the world, including inland seas, lakes, rivers, and underground waters. The average depth of the oceans is 3,794 m, more than five times the average height of the continents. The rocks of the lithosphere ...
... The hydrosphere consists chiefly of the oceans, but technically includes all water surfaces in the world, including inland seas, lakes, rivers, and underground waters. The average depth of the oceans is 3,794 m, more than five times the average height of the continents. The rocks of the lithosphere ...
Geosphere!
... A system is a collection of interdependent parts within a defined area. The Earth is described as a system since it also has connecting ‘parts’ that make ...
... A system is a collection of interdependent parts within a defined area. The Earth is described as a system since it also has connecting ‘parts’ that make ...
Chapter 1 Section 2
... 13. Erosion- rock and soil moved from one place to another by forces such as wind, water, or ice 14.Glaciers- large sheets of ice 15. River System- a river and all the streams that flow into it 16. Climate- Pattern of weather over a period of time 17. Rotate- to spin, it takes 24 hours for the Eart ...
... 13. Erosion- rock and soil moved from one place to another by forces such as wind, water, or ice 14.Glaciers- large sheets of ice 15. River System- a river and all the streams that flow into it 16. Climate- Pattern of weather over a period of time 17. Rotate- to spin, it takes 24 hours for the Eart ...
Geoid Isostasy
... which the sea would stand in a con0nental area if it were able to do so. – Spheroid – mathema0cal representa0on of sea‐level with all irregular influences removed – Gravity anomalies – The gravita0onal accelera0on remaining aEer allowing for other factors ...
... which the sea would stand in a con0nental area if it were able to do so. – Spheroid – mathema0cal representa0on of sea‐level with all irregular influences removed – Gravity anomalies – The gravita0onal accelera0on remaining aEer allowing for other factors ...
Study guide for Mrs
... Study guide for Mrs. Williams Plate Tectonic’s test (Thursday, Sept. 15). A. Know the following vocabulary words: Inner core Outer core Mantle Crust Subduction boundary/zone Divergent boundary Convergent boundary Transform boundary Mid-ocean ridge Pangaea Lithosphere Tectonic plates B. Know the dire ...
... Study guide for Mrs. Williams Plate Tectonic’s test (Thursday, Sept. 15). A. Know the following vocabulary words: Inner core Outer core Mantle Crust Subduction boundary/zone Divergent boundary Convergent boundary Transform boundary Mid-ocean ridge Pangaea Lithosphere Tectonic plates B. Know the dire ...
Eighteenth lecture
... eye for its tremendous depth, but the North Rim is also over 8000 feet (2400 m) above sea level! Note how FLAT that upland surface is! ...
... eye for its tremendous depth, but the North Rim is also over 8000 feet (2400 m) above sea level! Note how FLAT that upland surface is! ...
Notes-Stress, Faults and Folds
... crust. Plate tectonics is the major cause of crustal deformation. Crust rides on top of the mantle. Thicker and heavier crust ___________ deeper into the mantle where thinner and lighter crust will ____________ higher on the mantle. The up and down movement of crust is balanced by two pressures. One ...
... crust. Plate tectonics is the major cause of crustal deformation. Crust rides on top of the mantle. Thicker and heavier crust ___________ deeper into the mantle where thinner and lighter crust will ____________ higher on the mantle. The up and down movement of crust is balanced by two pressures. One ...
Chapter 2, Section 3 Internal Forces Shaping the Earth
... Volcanoes • Magma, gases, and water from the lower part of the crust or mantle collect in underground chambers and eventually escape through a crack in the earth’s surface (a volcano). • Most volcanoes are found along tectonic plate boundaries. • Volcanoes do not erupt on a predictable schedule – t ...
... Volcanoes • Magma, gases, and water from the lower part of the crust or mantle collect in underground chambers and eventually escape through a crack in the earth’s surface (a volcano). • Most volcanoes are found along tectonic plate boundaries. • Volcanoes do not erupt on a predictable schedule – t ...
The Layers of Earth
... Heat maintained by insulation of outer layers Powers all geologic activity ...
... Heat maintained by insulation of outer layers Powers all geologic activity ...
Post-glacial rebound
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Post-glacial rebound (sometimes called continental rebound) is the rise of land masses that were depressed by the huge weight of ice sheets during the last glacial period, through a process known as isostatic depression. Post-glacial rebound and isostatic depression are different parts of a process known as either glacial isostasy, glacial isostatic adjustment, or glacioisostasy. Glacioisostasy is the solid Earth deformation associated with changes in ice mass distribution. The most obvious and direct affects of post-glacial rebound are readily apparent in northern Europe (especially Scotland, Estonia, Latvia, Fennoscandia, and northern Denmark), Siberia, Canada, the Great Lakes of Canada and the United States, the coastal region of the US state of Maine, parts of Patagonia, and Antarctica. However, through processes known as ocean siphoning and continental levering, the effects of post-glacial rebound on sea-level are felt globally far from the locations of current and former ice sheets.