Plate Tectonics - bvsd.k12.pa.us
... 1. During the 1940s and 1950s, scientists began using radar on moving ships to map large areas of the ocean floor in detail. ...
... 1. During the 1940s and 1950s, scientists began using radar on moving ships to map large areas of the ocean floor in detail. ...
1 - Ridgefield School District
... 1. During the 1940s and 1950s, scientists began using radar on moving ships to map large areas of the ocean floor in detail. ...
... 1. During the 1940s and 1950s, scientists began using radar on moving ships to map large areas of the ocean floor in detail. ...
PLATE TECTONICS
... Basaltic magma soon begins to form at the top of the asthenosphere as peridotite rocks begin to melt by the pressuredrop mechanism. As the low viscosity basaltic magma makes its way to the surface, it encounters groundwater which comes to the surface as a combination of hot springs and fumaroles. In ...
... Basaltic magma soon begins to form at the top of the asthenosphere as peridotite rocks begin to melt by the pressuredrop mechanism. As the low viscosity basaltic magma makes its way to the surface, it encounters groundwater which comes to the surface as a combination of hot springs and fumaroles. In ...
Ocean The World Ocean Ocean Floor Features
... Ocean The World Ocean 1 recognize that most of the Earth is covered with water. 2 list the Earth’s four main ocean basins and identify their locations. 3 describe the topography of the ocean floor and compare it to land. 4 identify and describe three major technologies used to study the ocean floor. ...
... Ocean The World Ocean 1 recognize that most of the Earth is covered with water. 2 list the Earth’s four main ocean basins and identify their locations. 3 describe the topography of the ocean floor and compare it to land. 4 identify and describe three major technologies used to study the ocean floor. ...
Plate Tectonics
... Build Up and Release of Stress • A build up of stress caused by friction created by sliding plates is released when the stress equals the fault strength. (P. 335) • The stress is immediately released and decreases to the ...
... Build Up and Release of Stress • A build up of stress caused by friction created by sliding plates is released when the stress equals the fault strength. (P. 335) • The stress is immediately released and decreases to the ...
here - Crescent School
... material mostly found at the bottom of oceans called Oceanic Crust (basalt) and a less dense material which we call the Continental Crust (granite). But since there is ‘more’ continental crust, it actually has more weight over the mantle. Hopefully the next diagrams will help! ...
... material mostly found at the bottom of oceans called Oceanic Crust (basalt) and a less dense material which we call the Continental Crust (granite). But since there is ‘more’ continental crust, it actually has more weight over the mantle. Hopefully the next diagrams will help! ...
Plate Tectonics
... Oceanic crust colliding with Continental crust Oceanic crust is denser, it is subducted (pushed down into the Earth). The region where this occurs is known as a Subduction Zone. The subducted plate melts due to: heat from the asthenosphere friction from the plates grinding over one another An oc ...
... Oceanic crust colliding with Continental crust Oceanic crust is denser, it is subducted (pushed down into the Earth). The region where this occurs is known as a Subduction Zone. The subducted plate melts due to: heat from the asthenosphere friction from the plates grinding over one another An oc ...
The Earth`s Structure - Geog
... what it was millions of years ago, when it is believed that all continents were joined to one land mass. Alfred Wegener put forward a theory regards their movement in 1912 with his theory of Continental Drift. His theory was based on observations such as: ...
... what it was millions of years ago, when it is believed that all continents were joined to one land mass. Alfred Wegener put forward a theory regards their movement in 1912 with his theory of Continental Drift. His theory was based on observations such as: ...
Oceanography
... Continental Drift Idea of Continental Drift Evidence of Continental Drift 1) Magnetic patterns around the Mid-Oceanic ridges 2) Absence of great amounts of sediment on the sea floor 3) similar mineral deposits in the Eastern part of South America with the western part of Africa 4) Animal living in I ...
... Continental Drift Idea of Continental Drift Evidence of Continental Drift 1) Magnetic patterns around the Mid-Oceanic ridges 2) Absence of great amounts of sediment on the sea floor 3) similar mineral deposits in the Eastern part of South America with the western part of Africa 4) Animal living in I ...
Chapter 10 Test Review
... The _________________ __________ is a process describing how supercontinents formed and broke apart in the past. The splitting of Pangaea into two continents is a part of this cycle. The idea of sea-floor spreading provides the evidence which supports Wegener’s hypotheses of ________________ _______ ...
... The _________________ __________ is a process describing how supercontinents formed and broke apart in the past. The splitting of Pangaea into two continents is a part of this cycle. The idea of sea-floor spreading provides the evidence which supports Wegener’s hypotheses of ________________ _______ ...
Mr. Phillips Earth Structure and Plate Tectonics Reading Questions
... Multiple Choice: ___9. The theory that Earth’s crust and upper mantle are broken into sections is called ___. a. seafloor spreading b. plate tectonics ___10. The theory of Plate Tectonics was introduced approximately ___ years ago. a. 15 b. 30-40 c. 75 d. 100 ___11. The idea that continents have mov ...
... Multiple Choice: ___9. The theory that Earth’s crust and upper mantle are broken into sections is called ___. a. seafloor spreading b. plate tectonics ___10. The theory of Plate Tectonics was introduced approximately ___ years ago. a. 15 b. 30-40 c. 75 d. 100 ___11. The idea that continents have mov ...
Going Their Separate Ways
... This interval is approximately the time needed for the ocean floor to move from the ridge crest to the trenches, where oceanic crust descends into the trench and is destroyed. Meanwhile, magma is continually rising along the mid-oceanic ridges, where the "recycling" process is completed by the creat ...
... This interval is approximately the time needed for the ocean floor to move from the ridge crest to the trenches, where oceanic crust descends into the trench and is destroyed. Meanwhile, magma is continually rising along the mid-oceanic ridges, where the "recycling" process is completed by the creat ...
3 Cool , ρ = 3400 kg m
... lithosphere floats). Because warm rocks have a lower density (denoted by the symbol ) than cold ones, the seafloor is shallower above young ocean lithosphere. ...
... lithosphere floats). Because warm rocks have a lower density (denoted by the symbol ) than cold ones, the seafloor is shallower above young ocean lithosphere. ...
oceanic crust - Duluth High School
... like soup or water in a pan you can watch the convection currents move in the liquid. When the convection currents flow in the asthenosphere they also move the crust. The crust gets a free ride with these currents, like the cork in this illustration. ...
... like soup or water in a pan you can watch the convection currents move in the liquid. When the convection currents flow in the asthenosphere they also move the crust. The crust gets a free ride with these currents, like the cork in this illustration. ...
Geology- Plate Tectonics (Study Guide) This week, you will create
... 2. Contrast/compare: 1) oceanic crust and continental crust 2) lithosphere and asthenosphere 3) outer core and inner core. 3. Describe Alfred Wegener’s hypothesis of continental drift. What evidence did he use to prove his hypothesis? 4. Describe Earth’s crust and mantle. Be sure to discuss each lay ...
... 2. Contrast/compare: 1) oceanic crust and continental crust 2) lithosphere and asthenosphere 3) outer core and inner core. 3. Describe Alfred Wegener’s hypothesis of continental drift. What evidence did he use to prove his hypothesis? 4. Describe Earth’s crust and mantle. Be sure to discuss each lay ...
Environmental Science
... No one has ever been deep enough into the Earth to see the Moho, and no wells have ever been drilled deep enough to penetrate it. Drilling wells to that depth is very expensive and very difficult because of the extreme temperature and pressure conditions. The deepest well that has been drilled to da ...
... No one has ever been deep enough into the Earth to see the Moho, and no wells have ever been drilled deep enough to penetrate it. Drilling wells to that depth is very expensive and very difficult because of the extreme temperature and pressure conditions. The deepest well that has been drilled to da ...
Converging Plate Boundaries
... lithospheric slabs, thereby producing an inclined zone of earthquakes that dips into the Earth’s upper mantle typically at angles of 40°– 60° from the horizontal. Earthquakes can occur at any depth within the sinking slab, from shallow (0 - 60 km) to as great as 700 km. Over three-quarters of the wo ...
... lithospheric slabs, thereby producing an inclined zone of earthquakes that dips into the Earth’s upper mantle typically at angles of 40°– 60° from the horizontal. Earthquakes can occur at any depth within the sinking slab, from shallow (0 - 60 km) to as great as 700 km. Over three-quarters of the wo ...
math lesson sheet
... 2. Seawater does not freeze at 0 degrees Celsius (32 degrees Fahrenheit). The salt in the water lowers the freezing point. On average, seawater freezes at –1.94 degrees Celsius. Use the formula below and convert this temperature to Fahrenheit. Fahrenheit=Celsius x 1.8+32 Answer: 28.5 degrees Fahrenh ...
... 2. Seawater does not freeze at 0 degrees Celsius (32 degrees Fahrenheit). The salt in the water lowers the freezing point. On average, seawater freezes at –1.94 degrees Celsius. Use the formula below and convert this temperature to Fahrenheit. Fahrenheit=Celsius x 1.8+32 Answer: 28.5 degrees Fahrenh ...
Types Of Plate Boundaries
... Subduction Boundary – When an oceanic plate plunges beneath another plate it is said to be sub-ducting beneath the overriding plate. This boundary between the two plates is a subduction boundary. Ex. Andes Mountains These boundaries can occur between two ocean plates or and ocean and continental pla ...
... Subduction Boundary – When an oceanic plate plunges beneath another plate it is said to be sub-ducting beneath the overriding plate. This boundary between the two plates is a subduction boundary. Ex. Andes Mountains These boundaries can occur between two ocean plates or and ocean and continental pla ...
Ch 10 - USD305.com
... • Shields-rocks w/in cratons that have been exposed at Earth’s surface • Rifting-process by which Earth’s crust breaks apart – Oceanic or continental – Forms in zone of weakness and continent breaks apart – East African Rift ...
... • Shields-rocks w/in cratons that have been exposed at Earth’s surface • Rifting-process by which Earth’s crust breaks apart – Oceanic or continental – Forms in zone of weakness and continent breaks apart – East African Rift ...
11.30-plate-tectonics
... http://www.classzone.com/books/earth_science/terc/content/visualizations/es0806/es0806page01.cfm?chapter_no=visualization ...
... http://www.classzone.com/books/earth_science/terc/content/visualizations/es0806/es0806page01.cfm?chapter_no=visualization ...
Plates of the Lithosphere - Cal State LA
... • Depending on the types of crust that are colliding, convergent boundaries produce different land features ...
... • Depending on the types of crust that are colliding, convergent boundaries produce different land features ...
TEST 3 Spring Semester, GG101
... b. The floodplain will collect excess sediment. c. Deposition will increase greater than erosion. d. A stream will decrease discharge. e. A stream will decrease its gradient. Avulsion is when: a. Flooding causes a stream to decrease discharge. b. Flooding causes a stream to build an alluvial fan. c. ...
... b. The floodplain will collect excess sediment. c. Deposition will increase greater than erosion. d. A stream will decrease discharge. e. A stream will decrease its gradient. Avulsion is when: a. Flooding causes a stream to decrease discharge. b. Flooding causes a stream to build an alluvial fan. c. ...
Abyssal plain
An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between 3000 and 6000 m. Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains cover more than 50% of the Earth’s surface. They are among the flattest, smoothest and least explored regions on Earth. Abyssal plains are key geologic elements of oceanic basins (the other elements being an elevated mid-ocean ridge and flanking abyssal hills). In addition to these elements, active oceanic basins (those that are associated with a moving plate tectonic boundary) also typically include an oceanic trench and a subduction zone.Abyssal plains were not recognized as distinct physiographic features of the sea floor until the late 1940s and, until very recently, none had been studied on a systematic basis. They are poorly preserved in the sedimentary record, because they tend to be consumed by the subduction process. The creation of the abyssal plain is the end result of spreading of the seafloor (plate tectonics) and melting of the lower oceanic crust. Magma rises from above the asthenosphere (a layer of the upper mantle) and as this basaltic material reaches the surface at mid-ocean ridges it forms new oceanic crust. This is constantly pulled sideways by spreading of the seafloor. Abyssal plains result from the blanketing of an originally uneven surface of oceanic crust by fine-grained sediments, mainly clay and silt. Much of this sediment is deposited by turbidity currents that have been channelled from the continental margins along submarine canyons down into deeper water. The remainder of the sediment is composed chiefly of pelagic sediments. Metallic nodules are common in some areas of the plains, with varying concentrations of metals, including manganese, iron, nickel, cobalt, and copper. These nodules may provide a significant resource for future mining ventures.Owing in part to their vast size, abyssal plains are currently believed to be a major reservoir of biodiversity. The abyss also exerts significant influence upon ocean carbon cycling, dissolution of calcium carbonate, and atmospheric CO2 concentrations over timescales of 100–1000 years. The structure and function of abyssal ecosystems are strongly influenced by the rate of flux of food to the seafloor and the composition of the material that settles. Factors such as climate change, fishing practices, and ocean fertilization are expected to have a substantial effect on patterns of primary production in the euphotic zone. This will undoubtedly impact the flux of organic material to the abyss in a similar manner and thus have a profound effect on the structure, function and diversity of abyssal ecosystems.