Intro to Oceanography - pams
... where the water is mixed by waves and currents; fairly warm (100-400 meters down) ...
... where the water is mixed by waves and currents; fairly warm (100-400 meters down) ...
The Theory of Plate Tectonics
... rises while cooler material near the surface sinks. ◦ This is what causes tectonic plates to move around. ...
... rises while cooler material near the surface sinks. ◦ This is what causes tectonic plates to move around. ...
Earth System - Plate Tectonics
... 2. What evidence did Alfred Wegener use to support his theory of continental drift? a. Fossil discoveries b. The Himalaya Mountains c. Ancient maps of the world d. Charts of seismic activity 3. What is true of tectonic plates? a. They are constantly moving b. Earthquakes cause them to move c. They d ...
... 2. What evidence did Alfred Wegener use to support his theory of continental drift? a. Fossil discoveries b. The Himalaya Mountains c. Ancient maps of the world d. Charts of seismic activity 3. What is true of tectonic plates? a. They are constantly moving b. Earthquakes cause them to move c. They d ...
Plate Tectonics Vocabulary 1. asthenosphere
... crust-the thin and solid outermost layer of the Earth above the mantle. Contains the continental (thicker, less dense) and oceanic (thinner, more dense) crusts ...
... crust-the thin and solid outermost layer of the Earth above the mantle. Contains the continental (thicker, less dense) and oceanic (thinner, more dense) crusts ...
Earthsci1
... Earth? Well, the temperature of the asthenospheric mantle reservoir is increased by heat transferred from the molten core and by increments of heat generated by the decay of the radioactive elements U, Th, K, Rb, Sm, etc. At some critical temperature, the mantle will start to flow buoyantly towards ...
... Earth? Well, the temperature of the asthenospheric mantle reservoir is increased by heat transferred from the molten core and by increments of heat generated by the decay of the radioactive elements U, Th, K, Rb, Sm, etc. At some critical temperature, the mantle will start to flow buoyantly towards ...
The Structure and Origin of the Ocean Basins The water Planet
... plate is subducted into the Earth, it is subjected to increased pressure and temperature. These conditions cause the plate materials to melt. This molten material moves upward through crustal fractures adjacent to the subduction zone and forms belts of volcanoes along the trench and above subducted ...
... plate is subducted into the Earth, it is subjected to increased pressure and temperature. These conditions cause the plate materials to melt. This molten material moves upward through crustal fractures adjacent to the subduction zone and forms belts of volcanoes along the trench and above subducted ...
Inside the Restless Earth
... a. Ridge push – Oceanic plate slides down the lithosphere asthenosphere boundary ...
... a. Ridge push – Oceanic plate slides down the lithosphere asthenosphere boundary ...
Essential Questions: February 13-17, 2017 Name: Date: Period
... 333The theory of___________________ states that new ocean crust is formed at ocean ridges and destroyed at deep-sea trenches. a. seafloor spreading b. tectonic plates c. continental drift 4Earthquakes are a sudden motion caused by movement of tectonic plates working against a. friction b. gravity c. ...
... 333The theory of___________________ states that new ocean crust is formed at ocean ridges and destroyed at deep-sea trenches. a. seafloor spreading b. tectonic plates c. continental drift 4Earthquakes are a sudden motion caused by movement of tectonic plates working against a. friction b. gravity c. ...
Earth Science Essential Knowledge and Skills
... oil spill – a form of pollution in which oil from various sources leaks into the ocean oozes – deep sea sediments that contain at least 30% organic matter (biogenous sediment) photosynthesis – the process that plants use to make food, using light energy, carbon dioxide, and water profile – a silhoue ...
... oil spill – a form of pollution in which oil from various sources leaks into the ocean oozes – deep sea sediments that contain at least 30% organic matter (biogenous sediment) photosynthesis – the process that plants use to make food, using light energy, carbon dioxide, and water profile – a silhoue ...
Plate Tectonics
... A rift valley forms where two continental and continental plate move away from each other. ...
... A rift valley forms where two continental and continental plate move away from each other. ...
File
... Describe how magnetic rocks on the seafloor provide evidence for tectonic theory • Earth has a magnetic field • Polarity of field reverses every 100 million years • When new rock forms at plate boundary at the oceanic ridge, the rock cools and solidifies and magnetic minerals in the rock (magnetite ...
... Describe how magnetic rocks on the seafloor provide evidence for tectonic theory • Earth has a magnetic field • Polarity of field reverses every 100 million years • When new rock forms at plate boundary at the oceanic ridge, the rock cools and solidifies and magnetic minerals in the rock (magnetite ...
Ocean Basin Physiography
... Submarine canyons are steep-walled, V-shaped valleys that incise into continental shelves and slopes and open out at depth onto the continental rise. Most submarine canyons are associated with the mouths of large rivers. Although their origin is still debated, submarine canyons are important here be ...
... Submarine canyons are steep-walled, V-shaped valleys that incise into continental shelves and slopes and open out at depth onto the continental rise. Most submarine canyons are associated with the mouths of large rivers. Although their origin is still debated, submarine canyons are important here be ...
File - Ms. D. Science CGPA
... washcloth + water(wet cloth)= washcloth’s density increases Higher density of washcloth= washcloth heavier(denser)= sinks Read 3rd P. Changes in density ...
... washcloth + water(wet cloth)= washcloth’s density increases Higher density of washcloth= washcloth heavier(denser)= sinks Read 3rd P. Changes in density ...
File - MrsBlochScience
... washcloth + water(wet cloth)= washcloth’s density increases Higher density of washcloth= washcloth heavier(denser)= sinks Read 3rd P. Changes in density ...
... washcloth + water(wet cloth)= washcloth’s density increases Higher density of washcloth= washcloth heavier(denser)= sinks Read 3rd P. Changes in density ...
Earth`s Layers Notes Printable
... Outermost, Solid Layer 2: continental and oceanic Composed of; oxygen, silicon and aluminum Oceanic must denser (due to 2x the iron, calcium and magnesium) 30 km MANTLE Hot, slow-flowing rock Convection takes place here Cooler rock sinks, warmer rock rises Denser than crust 2,900 ...
... Outermost, Solid Layer 2: continental and oceanic Composed of; oxygen, silicon and aluminum Oceanic must denser (due to 2x the iron, calcium and magnesium) 30 km MANTLE Hot, slow-flowing rock Convection takes place here Cooler rock sinks, warmer rock rises Denser than crust 2,900 ...
LAB 4-3: Seafloor Spreading
... already learned, the earth’s crust is broken up into a large number of tectonic plates that are moving in relation to one another. The focus of this lab is to examine the sea floor of the Atlantic Ocean where two tectonic plates are moving apart creating a divergent plate boundary. Divergent plate b ...
... already learned, the earth’s crust is broken up into a large number of tectonic plates that are moving in relation to one another. The focus of this lab is to examine the sea floor of the Atlantic Ocean where two tectonic plates are moving apart creating a divergent plate boundary. Divergent plate b ...
Inside Earth-Chapter 1 - Kenston Local Schools
... the repeating cycle of the rising and falling of the hot material in the mantle (asthenosphere); contributes to the movement of the crustal plates; the movement of fluid, caused by differences in temperature, that transfers heat from one part of the fluid to ...
... the repeating cycle of the rising and falling of the hot material in the mantle (asthenosphere); contributes to the movement of the crustal plates; the movement of fluid, caused by differences in temperature, that transfers heat from one part of the fluid to ...
Introduction to Plate Tectonics - EHS
... – a great mountain range on the ocean floor, the global mid-ocean ridge, encircled the Earth. • more than 50,000 kilometers (km) long and up to 1000 km across • zig-zags between the continents • Rising about 4,500 meters(m) above the sea floor, – Taller than all mountains in the US except for Mount ...
... – a great mountain range on the ocean floor, the global mid-ocean ridge, encircled the Earth. • more than 50,000 kilometers (km) long and up to 1000 km across • zig-zags between the continents • Rising about 4,500 meters(m) above the sea floor, – Taller than all mountains in the US except for Mount ...
Tectonics 1 - Montville.net
... • Concentration of earthquakes and volcanoes at plate boundaries ...
... • Concentration of earthquakes and volcanoes at plate boundaries ...
Chapter 33
... • Describes the forces within the Earth that create the continents, ocean basins, mountain ranges, earthquake belts, and large- scale features of the Earth’s surface. • The Earth’s outer shell, the lithosphere, is divided into eight relatively large plates and a number of small ones. ...
... • Describes the forces within the Earth that create the continents, ocean basins, mountain ranges, earthquake belts, and large- scale features of the Earth’s surface. • The Earth’s outer shell, the lithosphere, is divided into eight relatively large plates and a number of small ones. ...
A. Identifying Tectonic Plate Boundaries B. Tectonic Plate Movement
... 2. Trace where tectonic plates are moving APART with BLUE pen or marker & add small BLUE ARROWS to show their movement. 3. Trace the San Andreas fault in GREEN (or another color) pen or marker and add small GREEN ARROWS to show how the plates are sliding past one ...
... 2. Trace where tectonic plates are moving APART with BLUE pen or marker & add small BLUE ARROWS to show their movement. 3. Trace the San Andreas fault in GREEN (or another color) pen or marker and add small GREEN ARROWS to show how the plates are sliding past one ...
A. Identifying Tectonic Plate Boundaries B. Tectonic Plate Movement
... 2. Trace where tectonic plates are moving APART with BLUE pen or marker & add small BLUE ARROWS to show their movement. 3. Trace the San ...
... 2. Trace where tectonic plates are moving APART with BLUE pen or marker & add small BLUE ARROWS to show their movement. 3. Trace the San ...
Chapter 6 Study Guide
... 1. The rock most commonly found on oceanic crust is 2. The rock most commonly found on continental crust is 3. Which layer of the earth is partially made of magma? 4. Which physical layer of the earth is made up of tectonic plates? 5. Another name for crust is 6. What appears to cause the Earth’s pl ...
... 1. The rock most commonly found on oceanic crust is 2. The rock most commonly found on continental crust is 3. Which layer of the earth is partially made of magma? 4. Which physical layer of the earth is made up of tectonic plates? 5. Another name for crust is 6. What appears to cause the Earth’s pl ...
Layers of the Ocean - hrsbstaff.ednet.ns.ca
... Mid-Atlantic ridge: is a mid-ocean ridge, a divergent tectonic plate boundary located along the floor of the Atlantic Ocean, and the longest mountain range in the world. Mantle: the layer of the earth between the crust and the core Contiental shelf: The area of sea around a land mass where the depth ...
... Mid-Atlantic ridge: is a mid-ocean ridge, a divergent tectonic plate boundary located along the floor of the Atlantic Ocean, and the longest mountain range in the world. Mantle: the layer of the earth between the crust and the core Contiental shelf: The area of sea around a land mass where the depth ...
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.