17.3-homework - Maples Elementary School
... __________3. Places where tectonic plates move apart are called_______________________________________________ a. convergent boundaries ...
... __________3. Places where tectonic plates move apart are called_______________________________________________ a. convergent boundaries ...
Plate Tectonics Earth`s Layers Boundaries Earthquakes Wild Card
... Name the scientist that came up with The theory of continental drift. ...
... Name the scientist that came up with The theory of continental drift. ...
Structure of Ocean Floor
... Sea-Floor Spreading (plate tectonics) • New sea-floor forms at mid-ocean ridges (where the edge of these “plates” meet) • Continental Drift: If the plate (as it spreads away from the ridge) contains continental crust (on top) the continents “drift” (move) apart. ...
... Sea-Floor Spreading (plate tectonics) • New sea-floor forms at mid-ocean ridges (where the edge of these “plates” meet) • Continental Drift: If the plate (as it spreads away from the ridge) contains continental crust (on top) the continents “drift” (move) apart. ...
Continental Drift and Plate Tectonics
... Here is an great link for seeing where each type of boundary is located. Click here for a great hyperlink! Make sure you click on each type of boundary in the key! ...
... Here is an great link for seeing where each type of boundary is located. Click here for a great hyperlink! Make sure you click on each type of boundary in the key! ...
Document
... The arrival of plate tectonics was a scientific revolution: Plate tectonic theory states that the Earth's surface is broken into rigid lithospheric plates that slide on top of asthenospheric mantle. The boundary between these lithosphere and asthenosphere is based on rheology (typically defined by ...
... The arrival of plate tectonics was a scientific revolution: Plate tectonic theory states that the Earth's surface is broken into rigid lithospheric plates that slide on top of asthenospheric mantle. The boundary between these lithosphere and asthenosphere is based on rheology (typically defined by ...
CD vs. PT
... Here is an great link for seeing where each type of boundary is located. Click here for a great hyperlink! Make sure you click on each type of boundary in the key! ...
... Here is an great link for seeing where each type of boundary is located. Click here for a great hyperlink! Make sure you click on each type of boundary in the key! ...
PlateTectonicsTheoryteachernotesL2 30.50KB
... Crust must be being destroyed somewhere! As no one could see it on the land, they looked in the sea. They discovered huge trenches where large areas of the ocean floor was being subducted. Hence the mechanism for sea floor spreading and continental drift was provided. So, what is going on? Current t ...
... Crust must be being destroyed somewhere! As no one could see it on the land, they looked in the sea. They discovered huge trenches where large areas of the ocean floor was being subducted. Hence the mechanism for sea floor spreading and continental drift was provided. So, what is going on? Current t ...
Convection in the mantle is commonly related to plate tectonic
... Two forces acting on the plates include convective heat rising from deep in the Earth & the strong gravitational pull on the cold subducting plates. At shallow depths & lower pressure, the mantle rock melts forming magma that rises beneath the mid-ocean ridge, solidifying near or at the surface feed ...
... Two forces acting on the plates include convective heat rising from deep in the Earth & the strong gravitational pull on the cold subducting plates. At shallow depths & lower pressure, the mantle rock melts forming magma that rises beneath the mid-ocean ridge, solidifying near or at the surface feed ...
power point notes
... where plates are moving toward each other, and sometimes one plate sinks (is subducted) under another. The location where sinking of a plate occurs is called a subduction zone. subduction ...
... where plates are moving toward each other, and sometimes one plate sinks (is subducted) under another. The location where sinking of a plate occurs is called a subduction zone. subduction ...
Ocean Basins and Crust
... • Coral (symbiotic coral + alga) are filter feeders, (at present) only live in fairly warm, clear, agitated waters. • Coral reefs are due to accumulation of the calcareous remains of corals and algae, along with minor contributions from other organisms, like sponges and shellfish. • Reefs come in th ...
... • Coral (symbiotic coral + alga) are filter feeders, (at present) only live in fairly warm, clear, agitated waters. • Coral reefs are due to accumulation of the calcareous remains of corals and algae, along with minor contributions from other organisms, like sponges and shellfish. • Reefs come in th ...
Deep Ocean Technology & The Ocean Floor
... •The abyssal plain is the broad, flat part of the ocean floor. •An ocean trench is a deep canyon on the ocean floor. They form where one tectonic plate is pushed under another. ...
... •The abyssal plain is the broad, flat part of the ocean floor. •An ocean trench is a deep canyon on the ocean floor. They form where one tectonic plate is pushed under another. ...
Study Guide for Oceanography Test 2016
... As salinity increases the density of water increases Sodium Chloride is the most abundant salt in ocean water As depth increases so does the pressure Deep currents in the ocean are caused by density differences either through salinity content or temperature differences Currents carry warm ...
... As salinity increases the density of water increases Sodium Chloride is the most abundant salt in ocean water As depth increases so does the pressure Deep currents in the ocean are caused by density differences either through salinity content or temperature differences Currents carry warm ...
File
... magma at crest regions of mid-ocean ridges. Older seafloor is destroyed at oceanic trenches. Hess’s idea was important because continents could move with respect to each other by creation/destruction of ocean floor. Continents did not have to “plow” through rigid ocean crust. Seafloor spreading prov ...
... magma at crest regions of mid-ocean ridges. Older seafloor is destroyed at oceanic trenches. Hess’s idea was important because continents could move with respect to each other by creation/destruction of ocean floor. Continents did not have to “plow” through rigid ocean crust. Seafloor spreading prov ...
THE EARTH`S LITHOSPHERE
... thick basalt, sediments and plutonic rock mineral denser than continental crust with an estimated age maximum of 180 million years because it contains less silicate) connected together by a “transition crust” that occurs gradually between them. ...
... thick basalt, sediments and plutonic rock mineral denser than continental crust with an estimated age maximum of 180 million years because it contains less silicate) connected together by a “transition crust” that occurs gradually between them. ...
Ocean Water - Cloudfront.net
... Abyssal (dark): extends to 6,000m. Sponges, worms, sea cucumbers. Hadal (dark): below 6,000m, virtually unexplored, life is sparse and depends on food that falls from higher levels. ...
... Abyssal (dark): extends to 6,000m. Sponges, worms, sea cucumbers. Hadal (dark): below 6,000m, virtually unexplored, life is sparse and depends on food that falls from higher levels. ...
Student ppt presentation
... Caused by the infiltration of seawater into the crust where it is heated and shot back into the ocean via the chimney of the vent. In the crust, the temperature of the water is raised up to 400°C. Additionally, the water is deoxygenated, made acidic, gains hydrogen sulfide, and picks up a variety of ...
... Caused by the infiltration of seawater into the crust where it is heated and shot back into the ocean via the chimney of the vent. In the crust, the temperature of the water is raised up to 400°C. Additionally, the water is deoxygenated, made acidic, gains hydrogen sulfide, and picks up a variety of ...
"Plate Tectonics" Extra Credit Assignment
... 2. The inner core is made mostly of ____________ and is found __________ miles to _____________miles below the surface and is about ____________ in diameter. 3. What is the Earth’s only liquid layer? ____________________________ 4. Is the crust the thickest under the ocean or under the continents? _ ...
... 2. The inner core is made mostly of ____________ and is found __________ miles to _____________miles below the surface and is about ____________ in diameter. 3. What is the Earth’s only liquid layer? ____________________________ 4. Is the crust the thickest under the ocean or under the continents? _ ...
ocean science review
... ocean formed as soon as the Earth was cool enough. Life followed soon thereafter. It is thought by many to be the beginning of time. Plate Tectonics theory suggests that the Earth’s surface is not a static arrangement of Continents and Oceans, but a dynamic mosaic of jostling segments called lithosp ...
... ocean formed as soon as the Earth was cool enough. Life followed soon thereafter. It is thought by many to be the beginning of time. Plate Tectonics theory suggests that the Earth’s surface is not a static arrangement of Continents and Oceans, but a dynamic mosaic of jostling segments called lithosp ...
Section 9.3 Actions at Plate Boundaries
... 1. Is the following sentence true or false? Oceanic lithosphere is created at divergent boundaries. 2. Is the following sentence true or false? Divergent boundaries only occur on the ocean floor. Match each definition with its term. Definition ...
... 1. Is the following sentence true or false? Oceanic lithosphere is created at divergent boundaries. 2. Is the following sentence true or false? Divergent boundaries only occur on the ocean floor. Match each definition with its term. Definition ...
Sea-Floor Spreading
... Remember, there are two types of crust. Continental Crust ( “land”) Oceanic Crust (the land under the oceans There is a big crack in the oceanic crust, and this is where the mid-ocean ridge forms. ...
... Remember, there are two types of crust. Continental Crust ( “land”) Oceanic Crust (the land under the oceans There is a big crack in the oceanic crust, and this is where the mid-ocean ridge forms. ...
An Expedition to the Seafloor- Answer Key
... 7. How did the data provide proof for the theory of seafloor spreading? The data indicates the seafloor is moving away from the Mid- Atlantic Ridge based on sediment age and thickness. Since the sediment above the basement rock is younger and thinner closer to the ridge, this supports the new crust ...
... 7. How did the data provide proof for the theory of seafloor spreading? The data indicates the seafloor is moving away from the Mid- Atlantic Ridge based on sediment age and thickness. Since the sediment above the basement rock is younger and thinner closer to the ridge, this supports the new crust ...
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.