third quarter - New Haven Science
... 1. Earth’s surface features, such as mountains, volcanoes and continents, are the constantlychanging result of dynamic processes and forces at work inside the Earth. 2. Earth is formed of three basic layers, with the densest being the iron and nickel core. The middle layer, the mantle, of the Earth ...
... 1. Earth’s surface features, such as mountains, volcanoes and continents, are the constantlychanging result of dynamic processes and forces at work inside the Earth. 2. Earth is formed of three basic layers, with the densest being the iron and nickel core. The middle layer, the mantle, of the Earth ...
THIRD QUARTER II. UNIT 5: PLATE TECTONICS Time
... 1. Earth’s surface features, such as mountains, volcanoes and continents, are the constantlychanging result of dynamic processes and forces at work inside the Earth. 2. Earth is formed of three basic layers, with the densest being the iron and nickel core. The middle layer, the mantle, of the Earth ...
... 1. Earth’s surface features, such as mountains, volcanoes and continents, are the constantlychanging result of dynamic processes and forces at work inside the Earth. 2. Earth is formed of three basic layers, with the densest being the iron and nickel core. The middle layer, the mantle, of the Earth ...
Practical 3 - Tectonic forces 1 Slab pull and viscosity of the
... 2. Integrate the expression written in 1. to express the isostatic balance between the ridge and the abyssal plain using densities, the lithospheric thickness ZL and the water depth w. 3. The change in density of the oceanic lithosphere with temperature is given by ∆ρ = −ρ α ∆T, ...
... 2. Integrate the expression written in 1. to express the isostatic balance between the ridge and the abyssal plain using densities, the lithospheric thickness ZL and the water depth w. 3. The change in density of the oceanic lithosphere with temperature is given by ∆ρ = −ρ α ∆T, ...
Chapter 9 Plate Tectonics
... _______________ valleys are deep faulted structures found along the axes of divergent plate boundaries. They can develop on the seafloor or on land. _______________ spreading produces new oceanic lithosphere. _______________ Rifts When spreading centers develop within a continent, the landma ...
... _______________ valleys are deep faulted structures found along the axes of divergent plate boundaries. They can develop on the seafloor or on land. _______________ spreading produces new oceanic lithosphere. _______________ Rifts When spreading centers develop within a continent, the landma ...
1. Earth Science a. Branches i. Geology—study of rocks, minerals
... i. Where there are collisions between continental crust and oceanic crust, the continent pushes the oceanic crust down into the mantle to be assimilated (destructive plate margin) ii. Consequence is younger oceans, older continents c. Continents are higher, and older, because they are less dense i. ...
... i. Where there are collisions between continental crust and oceanic crust, the continent pushes the oceanic crust down into the mantle to be assimilated (destructive plate margin) ii. Consequence is younger oceans, older continents c. Continents are higher, and older, because they are less dense i. ...
Earthquake Unit Assessment Retake Preparation
... Objective: Be able to identify the interior layers of the Earth, along with the key characteristics of each. Reference materials: Earth’s Composition & Structure notes, Earth’s Interior notes, Lesson 14 Quiz, ...
... Objective: Be able to identify the interior layers of the Earth, along with the key characteristics of each. Reference materials: Earth’s Composition & Structure notes, Earth’s Interior notes, Lesson 14 Quiz, ...
Earth Matters Benchmark Study Topics
... List all of the places you could find faults. Section 2—Earthquakes and seismic waves In which layer of the Earth would you find the focus, or point where the rock breaks and starts the earthquake? ...
... List all of the places you could find faults. Section 2—Earthquakes and seismic waves In which layer of the Earth would you find the focus, or point where the rock breaks and starts the earthquake? ...
Plate Tectonic Vocabulary
... away from one another. Most divergent boundaries are found on the ocean floor. Transform-fault boundary: A place where the plates that make up Earth’s crust and upper mantle move past one another. Sea floor spreading: The process by which new ocean floor is continually being formed as magma rises to ...
... away from one another. Most divergent boundaries are found on the ocean floor. Transform-fault boundary: A place where the plates that make up Earth’s crust and upper mantle move past one another. Sea floor spreading: The process by which new ocean floor is continually being formed as magma rises to ...
The Theory of Plate Tectonics
... Bridge across the Álfagjá rift valley in southwest Iceland, the boundary between the Eurasian and North American continental tectonic plates. ...
... Bridge across the Álfagjá rift valley in southwest Iceland, the boundary between the Eurasian and North American continental tectonic plates. ...
Solid Earth - SchoolNova
... Age of Continental Crust The oldest rocks on Earth are found within the stable cores of the continents. The oldest known intact crustal fragment on Earth, Acasta Gneiss (located in Northwest Territories, Canada), is believed to be ~4 billion years old. ...
... Age of Continental Crust The oldest rocks on Earth are found within the stable cores of the continents. The oldest known intact crustal fragment on Earth, Acasta Gneiss (located in Northwest Territories, Canada), is believed to be ~4 billion years old. ...
PLATE TECTONICS - Los Alamos Public Schools / Home
... • Convergent boundary- Subduction zones, or 2 oceanic plates converging. (In this case- whichever plate is denser due to age, sinks) • Hot spot- a superheated section of magma blasts through the crust and creates a volcano- exception to rule, not at boundary ...
... • Convergent boundary- Subduction zones, or 2 oceanic plates converging. (In this case- whichever plate is denser due to age, sinks) • Hot spot- a superheated section of magma blasts through the crust and creates a volcano- exception to rule, not at boundary ...
Chapter12 EarthsInterior
... • P-waves can pass through all materials (solids and fluids) • S-waves can only pass through solids. ...
... • P-waves can pass through all materials (solids and fluids) • S-waves can only pass through solids. ...
OCN 201: Plate Tectonics II
... history by chemical differentiation at subduction zones – Oceanic crust forms by single stage melting of mantle at MOR produces basalt – Continental crust probably formed by a second stage of melting… – Water driven off subducting oceanic crust at depth is added to mantle wedge overriding the down ...
... history by chemical differentiation at subduction zones – Oceanic crust forms by single stage melting of mantle at MOR produces basalt – Continental crust probably formed by a second stage of melting… – Water driven off subducting oceanic crust at depth is added to mantle wedge overriding the down ...
Characteristic and Uncharacteristic Earthquakes as Possible
... In general both plates and plate boundaries move with respect to the deep mantle For example, assume Africa were not moving with respect to the deep mantle. If so, as lithosphere is added by spreading at the Mid-Atlantic ridge, both the ridge and South America move westward relative to the mantle. C ...
... In general both plates and plate boundaries move with respect to the deep mantle For example, assume Africa were not moving with respect to the deep mantle. If so, as lithosphere is added by spreading at the Mid-Atlantic ridge, both the ridge and South America move westward relative to the mantle. C ...
Solid Earth - SchoolNova
... Age of Continental Crust The oldest rocks on Earth are found within the stable cores of the continents. The oldest known intact crustal fragment on Earth, Acasta Gneiss (located in Northwest Territories, Canada), is believed to be ~4 billion years old. ...
... Age of Continental Crust The oldest rocks on Earth are found within the stable cores of the continents. The oldest known intact crustal fragment on Earth, Acasta Gneiss (located in Northwest Territories, Canada), is believed to be ~4 billion years old. ...
The Earth`s Interior
... The Earth’s Interior Introduction For much of our history, we have been ignorant of the inside of the interior on which we live. Only is recent years have we been able to develop an image of the interior of the earth. Today, it is known that the earth’s interior is so hot that it should be in ...
... The Earth’s Interior Introduction For much of our history, we have been ignorant of the inside of the interior on which we live. Only is recent years have we been able to develop an image of the interior of the earth. Today, it is known that the earth’s interior is so hot that it should be in ...
Plate Tectonics
... a) Earth's crust is divided into 12 major plates b) Convection Currents in the Mantle cause the plates to move c) Radiation from the sun heats the Earth's interior d) Interactions at plate boundaries create landforms, earthquakes and volcanoes ...
... a) Earth's crust is divided into 12 major plates b) Convection Currents in the Mantle cause the plates to move c) Radiation from the sun heats the Earth's interior d) Interactions at plate boundaries create landforms, earthquakes and volcanoes ...
Happy Valentine`s Day!
... Why is the Crust Different from the Mantle? When partial melting begins in the asthenosphere, the elements Si, Al, Na, and K migrate into the melt, while Mg and Fe stay put. The magma rises, preferentially separating out these elements. Additionally, minerals with lots of Mg and little Si crystalli ...
... Why is the Crust Different from the Mantle? When partial melting begins in the asthenosphere, the elements Si, Al, Na, and K migrate into the melt, while Mg and Fe stay put. The magma rises, preferentially separating out these elements. Additionally, minerals with lots of Mg and little Si crystalli ...
iii) structure - Junta de Andalucía
... 3. The mantle is the widest section of the earth. The mantle is made up of semi-molten rock called magma. In the upper parts of the mantle the rock is hard, but nearer the core, the rock is soft. 4. The crust is the outer layer of the earth. It is a thin layer between 5-75 km thick. The crust is a s ...
... 3. The mantle is the widest section of the earth. The mantle is made up of semi-molten rock called magma. In the upper parts of the mantle the rock is hard, but nearer the core, the rock is soft. 4. The crust is the outer layer of the earth. It is a thin layer between 5-75 km thick. The crust is a s ...
Power Point - Fort Bend ISD
... earth’s surface -broken into more than a dozen slabs of rock called plates that rest on layer of the upper mantle -these plates carry earth’s oceans & continents ...
... earth’s surface -broken into more than a dozen slabs of rock called plates that rest on layer of the upper mantle -these plates carry earth’s oceans & continents ...
Plate Tectonic Notes
... • Why does mantle rock begin to sink back towards the lower mantle from the area closest to the crust? • What would be different/happen if the core cooled down? ...
... • Why does mantle rock begin to sink back towards the lower mantle from the area closest to the crust? • What would be different/happen if the core cooled down? ...
Mantle plume
A mantle plume is a mechanism proposed in 1971 to explain volcanic regions of the earth that were not thought to be explicable by the then-new theory of plate tectonics. Some such volcanic regions lie far from tectonic plate boundaries, for example, Hawaii. Others represent unusually large-volume volcanism, whether on plate boundaries, e.g. Iceland, or basalt floods such as the Deccan or Siberian traps.A mantle plume is posited to exist where hot rock nucleates at the core-mantle boundary and rises through the Earth's mantle becoming a diapir in the Earth's crust. The currently active volcanic centers are known as ""hot spots"". In particular, the concept that mantle plumes are fixed relative to one another, and anchored at the core-mantle boundary, was thought to provide a natural explanation for the time-progressive chains of older volcanoes seen extending out from some such hot spots, such as the Hawaiian–Emperor seamount chain.The hypothesis of mantle plumes from depth is not universally accepted as explaining all such volcanism. It has required progressive hypothesis-elaboration leading to variant propositions such as mini-plumes and pulsing plumes. Another hypothesis for unusual volcanic regions is the ""Plate model"". This proposes shallower, passive leakage of magma from the mantle onto the Earth's surface where extension of the lithosphere permits it, attributing most volcanism to plate tectonic processes, with volcanoes far from plate boundaries resulting from intraplate extension.