Earth 50 2nd Midterm Exam November 14, 2005 Multiple Choice (2
... D) a bad effect, because the trade winds normally keep heavy storms off the coast. 14. ) The geologic time scale is divided into four main units called eras. The most recent era is the A) Precambrian B) Mesozoic C) Quaternary D) Cenozoic E) Paleozoic 15. The thickest soils are produced by weathering ...
... D) a bad effect, because the trade winds normally keep heavy storms off the coast. 14. ) The geologic time scale is divided into four main units called eras. The most recent era is the A) Precambrian B) Mesozoic C) Quaternary D) Cenozoic E) Paleozoic 15. The thickest soils are produced by weathering ...
Sea-Floor Spreading
... Hess' model, convection currents push the ocean floor from the mid-ocean ridge to the trench. The convection currents might also help move the continents, much like a conveyor belt. As Hess formulated his hypothesis, Robert Dietz independently proposed a similar model and called it sea floor spreadi ...
... Hess' model, convection currents push the ocean floor from the mid-ocean ridge to the trench. The convection currents might also help move the continents, much like a conveyor belt. As Hess formulated his hypothesis, Robert Dietz independently proposed a similar model and called it sea floor spreadi ...
Chapter 7
... • Remains of warm climate plants in arctic zones and Arctic clues in tropical zones • Similar rock structures found on different continents ...
... • Remains of warm climate plants in arctic zones and Arctic clues in tropical zones • Similar rock structures found on different continents ...
Passive margin
... • The plates move apart here, to create new sea floor • If the plate has continental crust it carries the ...
... • The plates move apart here, to create new sea floor • If the plate has continental crust it carries the ...
Earth Science Text Assignments
... The three main layers are the crust, the mantle and the core. 12. What is different about these layers of the earth? The layers vary in size, composition, temperature, and pressure. 13. Describe what happens to temperature as you descend into the Earth Temperature increases after the first 20 meters ...
... The three main layers are the crust, the mantle and the core. 12. What is different about these layers of the earth? The layers vary in size, composition, temperature, and pressure. 13. Describe what happens to temperature as you descend into the Earth Temperature increases after the first 20 meters ...
sample 7 - msaldrichscience
... In activity 5, in the late 1800s study the discovers of similar fossils on continents that are now separated widely by oceans. Edward Suess is an 1800 Austrian geologists that came up with the contraction theory. Suess stated that as the earth cooled from a molten state, the more dense materials con ...
... In activity 5, in the late 1800s study the discovers of similar fossils on continents that are now separated widely by oceans. Edward Suess is an 1800 Austrian geologists that came up with the contraction theory. Suess stated that as the earth cooled from a molten state, the more dense materials con ...
Review Plate Tectonics
... b. The close relationship between plate boundaries and volcanic activity c. Studies of rocks on the ocean floor showing that some rocks are younger than others d. Deep ocean studies showing no zones of movement on the ocean floor 21. Alfred Wegener proposed that 200 million years ago, continents bro ...
... b. The close relationship between plate boundaries and volcanic activity c. Studies of rocks on the ocean floor showing that some rocks are younger than others d. Deep ocean studies showing no zones of movement on the ocean floor 21. Alfred Wegener proposed that 200 million years ago, continents bro ...
The Theory of Plate Tectonics Plates
... • Compare to the rate of fingernail growth • The rate of plate movement is slow, but multiply it over millions of years to understand how Pangaea became Earth’s ...
... • Compare to the rate of fingernail growth • The rate of plate movement is slow, but multiply it over millions of years to understand how Pangaea became Earth’s ...
The sea floor spreads apart at divergent boundaries.
... Mid-ocean ridges are the longest chain of mountains on Earth. Most of these ridges contain a rift valley along their center, as shown in the diagram below. When molten material rises from the asthenosphere, cold ocean water cools the rock until it becomes solid. As the plates move apart, new cracks ...
... Mid-ocean ridges are the longest chain of mountains on Earth. Most of these ridges contain a rift valley along their center, as shown in the diagram below. When molten material rises from the asthenosphere, cold ocean water cools the rock until it becomes solid. As the plates move apart, new cracks ...
oceans - Sir C R R College
... This involves the spreading of ocean-floor on either side of the mid-oceanic ridges (huge mountain chains buried under ocean water) and creation of new crust at the spreading centers. ...
... This involves the spreading of ocean-floor on either side of the mid-oceanic ridges (huge mountain chains buried under ocean water) and creation of new crust at the spreading centers. ...
Tect.EQ.Oceans.S04 - SC4 Geography MainPage
... all of the above New oceanic crust can form at: divergent plate boundaries convergent plate boundaries transform fault boundaries all of the above Mount St. Helens is associated with a: divergent plate boundary convergent plate boundary transform fault boundary all of the above When an earthquake oc ...
... all of the above New oceanic crust can form at: divergent plate boundaries convergent plate boundaries transform fault boundaries all of the above Mount St. Helens is associated with a: divergent plate boundary convergent plate boundary transform fault boundary all of the above When an earthquake oc ...
INTRODUCTION TO THE OCEANS
... Mid-Ocean Ridge. Beyond the abyssal plain, which may be several hundred kilometers wide, the ocean floor begins to ascend again with a gentle slope. This area is the flank of the mid-ocean ridge, a long, undersea mountain chain that usually extends down the middle of the ocean. The Mid-Atlantic Rid ...
... Mid-Ocean Ridge. Beyond the abyssal plain, which may be several hundred kilometers wide, the ocean floor begins to ascend again with a gentle slope. This area is the flank of the mid-ocean ridge, a long, undersea mountain chain that usually extends down the middle of the ocean. The Mid-Atlantic Rid ...
Lecture 14 – Marine Sediments (1) The CCD is: (a) the depth at
... (8) What do you expect the composition of sediments will be at 2500m in middle of the Equatorial Pacific? How will that change if the depth at the same area is 5000 meters? The sediment will be foram ooze with siliceous components; it is productive so both will be there but it is above the CCD so c ...
... (8) What do you expect the composition of sediments will be at 2500m in middle of the Equatorial Pacific? How will that change if the depth at the same area is 5000 meters? The sediment will be foram ooze with siliceous components; it is productive so both will be there but it is above the CCD so c ...
Sea Floor Spreading - Smyth County Schools
... • Ocean crust thin; continental crust thick & granitic • Rocks on continent varied, oldest 3.8 billion years old • Volcanoes & Earthquakes limited in locations • Atlantic & Pacific different topography from land and from each other ...
... • Ocean crust thin; continental crust thick & granitic • Rocks on continent varied, oldest 3.8 billion years old • Volcanoes & Earthquakes limited in locations • Atlantic & Pacific different topography from land and from each other ...
Lecture 10 Plate Tectonics i
... Seafloor spreading in detail Harry Hess: Convection currents in mantle Seafloor spreading occurs along relatively narrow zones, called rift zones, located at the crests of ocean ridges As plates pulled apart, low pressure causes mantle mellting,magma moves into fractures and makes new oceanic litho ...
... Seafloor spreading in detail Harry Hess: Convection currents in mantle Seafloor spreading occurs along relatively narrow zones, called rift zones, located at the crests of ocean ridges As plates pulled apart, low pressure causes mantle mellting,magma moves into fractures and makes new oceanic litho ...
Detailed plate tectonics
... Oceanic-Oceanic Convergence As with oceanic-continental convergence, when two oceanic plates converge, one is usually subducted under the other, and in the process a trench is formed. Example: The Challenger Deep, at the southern end of the Marianas Trench, plunges deeper into the Earth's interior ...
... Oceanic-Oceanic Convergence As with oceanic-continental convergence, when two oceanic plates converge, one is usually subducted under the other, and in the process a trench is formed. Example: The Challenger Deep, at the southern end of the Marianas Trench, plunges deeper into the Earth's interior ...
Ocean Basins
... especially from rivers and mid-ocean ridges (volcanic eruptions) some remain dissolved (e.g., producing salt water) some precipitate inorganically (e.g., producing Manganese nodules) some precipitate organically (e.g., producing biogenic oozes) Solid particles, from: wind (aeolian) – dust blown from ...
... especially from rivers and mid-ocean ridges (volcanic eruptions) some remain dissolved (e.g., producing salt water) some precipitate inorganically (e.g., producing Manganese nodules) some precipitate organically (e.g., producing biogenic oozes) Solid particles, from: wind (aeolian) – dust blown from ...
Earth Science Vocabulary
... 7. Core – Earth’s innermost layer (center) a.) outer is composed of liquid iron & nickel b.) inner is composed of solid iron & nickel 8. Crust – Earth’s outermost layer (thinnest layer) a.) continental is found under the continents, composed of granite b.) oceanic is found under the oceans, composed ...
... 7. Core – Earth’s innermost layer (center) a.) outer is composed of liquid iron & nickel b.) inner is composed of solid iron & nickel 8. Crust – Earth’s outermost layer (thinnest layer) a.) continental is found under the continents, composed of granite b.) oceanic is found under the oceans, composed ...
Plate Tectonics Unit(poster)
... at the ridge and oldest the farthest away from the ridge *2 Basalt rock was found at the mid-ocean ridge, it comes from Volcanoes and makes the ocean floor of every ocean * 3 Ocean floor was found to be sinking below continents or other crust at the trenches… this process was named subduction ...
... at the ridge and oldest the farthest away from the ridge *2 Basalt rock was found at the mid-ocean ridge, it comes from Volcanoes and makes the ocean floor of every ocean * 3 Ocean floor was found to be sinking below continents or other crust at the trenches… this process was named subduction ...
The Continental Drift Theory
... development of the precision depth recorder and with the use of the Glomar Challenger, a research ship used as a drilling platform, a new frontier was opened. One of the unexpected discoveries was the presence of underwater mountains. Scientists located mid-ocean ridges, the longest mountain chains ...
... development of the precision depth recorder and with the use of the Glomar Challenger, a research ship used as a drilling platform, a new frontier was opened. One of the unexpected discoveries was the presence of underwater mountains. Scientists located mid-ocean ridges, the longest mountain chains ...
Along this axis of the Aleutian Trench lies the subduction zone, in
... Fortunately, several years before Wegener died in Greenland, a Dutch geophysicist, Felix Vening Meinesz contrived to test the theory that very deep oceanic trenches represented mysterious forces at the edges or boundaries of continental plates. If there were unseen forces tugging or forcing sedimen ...
... Fortunately, several years before Wegener died in Greenland, a Dutch geophysicist, Felix Vening Meinesz contrived to test the theory that very deep oceanic trenches represented mysterious forces at the edges or boundaries of continental plates. If there were unseen forces tugging or forcing sedimen ...
Nitrogen Cycles through the Biosphere
... Insects make up most of the known species Perhaps 10–14 million species not yet identified ...
... Insects make up most of the known species Perhaps 10–14 million species not yet identified ...