Layers of the earth (custodio)
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The document describes the four main layers of Earth - the crust, mantle, outer core, and inner core. The crust is the thinnest solid outer layer averaging 25 miles thick and composed mostly of oxygen, silicon, aluminum and iron. Below is the mantle, a dense hot semi-solid layer 1,802 miles thick composed of silicate minerals. The outer core is a liquid layer of iron and nickel between 4,000-5,000 degrees Celsius and 1,430 miles thick, generating Earth's magnetic field. Within is the inner core, the planet's hottest center at 5,000-7,000 degrees Celsius and solid iron 750 miles thick under immense pressure.
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Lesson 1.1 layers of earth
The document describes the different layers that make up the Earth. It discusses the crust, lithosphere, asthenosphere, continental crust, oceanic crust, mantle, outer core, and inner core. The crust sits on top and is where life exists, and is made up of either lighter continental crust or denser oceanic crust. Below the crust is the mantle, which makes up 80% of the Earth's mass and is hot and rocky. At the center are the outer core, which is liquid, and inner core, which is solid. Boundaries between the layers include the Mohorovicic discontinuity between crust and mantle, and the Gutenberg and Lehmann discontinuities between the layers within the Earth's core
Mechanical layers of the earth
the Mechanical layers of the Earth
Distinct Layers
* Compositional Layers
* Mechanical Layers
Compositional Layers is composed of Crust, Mantle and Core while Mechanical Layers is composed of Lithosphere, Asthenosphere, Mesosphere, Outer Core and Inner Core.
Thank you ^-^
Layers of the earth GN
The document describes the structure and composition of Earth. It discusses how Earth is made up of four interconnected spheres - the atmosphere, geosphere, hydrosphere, and biosphere. It then focuses on the layers that make up Earth's interior, including the crust, mantle, and core. The crust and mantle are composed mainly of oxygen, silicon, and metals. Heat from the core drives convection currents in the mantle and outer core.
THE PARTS OF THE EARTH
The Earth is composed of three main layers - a thin, rocky crust on the outermost layer, a solid middle layer called the mantle, and an inner core. The mantle extends over 2,890 km deep and is composed of hot, solid silicate rocks that can slowly flow over long time periods. Within the core, there is a liquid outer core made of iron and nickel below the mantle, and a solid inner core made of iron and nickel alloy at the center of the Earth.
Layers of the earth
This is a brief description about the multiple layers of the Earth, and fun facts you probably didn't know about the earth.
Layers of the Earth
The document describes the four main layers that make up the Earth - the crust, mantle, outer core, and inner core. The crust is the outermost layer, upon which we live, and is broken into tectonic plates. Below the crust is the mantle, which is divided into the upper and lower mantle. The lower mantle is very thick and contains molten rock that moves in convection currents. Deepest inside the Earth is the core, with a liquid outer core that generates the Earth's magnetic field and a solid inner core under intense heat and pressure.
Earth's Structure
The earth is made up of different layers. These layers are of different thicknesses and temperatures.
Interior of earth
The document discusses the layered internal structure of the Earth based on differences in composition, density, seismic wave velocities, and mechanical properties. It is divided into five main layers from outermost to innermost: the crust, mantle, outer core, and inner core. The crust and upper mantle are solid and composed of silicate rocks, while the lower mantle, outer core, and inner core are increasingly dense with the inner core being solid iron-nickel alloy. Seismic discontinuities exist that help delineate the boundaries between layers.
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Lesson 1.1 layers of earth
The document describes the different layers that make up the Earth. It discusses the crust, lithosphere, asthenosphere, continental crust, oceanic crust, mantle, outer core, and inner core. The crust sits on top and is where life exists, and is made up of either lighter continental crust or denser oceanic crust. Below the crust is the mantle, which makes up 80% of the Earth's mass and is hot and rocky. At the center are the outer core, which is liquid, and inner core, which is solid. Boundaries between the layers include the Mohorovicic discontinuity between crust and mantle, and the Gutenberg and Lehmann discontinuities between the layers within the Earth's core
Mechanical layers of the earth
the Mechanical layers of the Earth
Distinct Layers
* Compositional Layers
* Mechanical Layers
Compositional Layers is composed of Crust, Mantle and Core while Mechanical Layers is composed of Lithosphere, Asthenosphere, Mesosphere, Outer Core and Inner Core.
Thank you ^-^
Layers of the earth GN
The document describes the structure and composition of Earth. It discusses how Earth is made up of four interconnected spheres - the atmosphere, geosphere, hydrosphere, and biosphere. It then focuses on the layers that make up Earth's interior, including the crust, mantle, and core. The crust and mantle are composed mainly of oxygen, silicon, and metals. Heat from the core drives convection currents in the mantle and outer core.
THE PARTS OF THE EARTH
The Earth is composed of three main layers - a thin, rocky crust on the outermost layer, a solid middle layer called the mantle, and an inner core. The mantle extends over 2,890 km deep and is composed of hot, solid silicate rocks that can slowly flow over long time periods. Within the core, there is a liquid outer core made of iron and nickel below the mantle, and a solid inner core made of iron and nickel alloy at the center of the Earth.
Layers of the earth
This is a brief description about the multiple layers of the Earth, and fun facts you probably didn't know about the earth.
Layers of the Earth
The document describes the four main layers that make up the Earth - the crust, mantle, outer core, and inner core. The crust is the outermost layer, upon which we live, and is broken into tectonic plates. Below the crust is the mantle, which is divided into the upper and lower mantle. The lower mantle is very thick and contains molten rock that moves in convection currents. Deepest inside the Earth is the core, with a liquid outer core that generates the Earth's magnetic field and a solid inner core under intense heat and pressure.
Earth's Structure
The earth is made up of different layers. These layers are of different thicknesses and temperatures.
Interior of earth
The document discusses the layered internal structure of the Earth based on differences in composition, density, seismic wave velocities, and mechanical properties. It is divided into five main layers from outermost to innermost: the crust, mantle, outer core, and inner core. The crust and upper mantle are solid and composed of silicate rocks, while the lower mantle, outer core, and inner core are increasingly dense with the inner core being solid iron-nickel alloy. Seismic discontinuities exist that help delineate the boundaries between layers.
The layers of the earth
All you have to know about the layers of the earth. Write down the names of the layers and their order. Also you have to know what they are made of, Which one is the hottest, which on is the thickest, and why the core is solid.
Interior of earth
The document summarizes the structure of Earth's interior. It is divided into three main layers:
1. The crust, which is the outermost layer averaging 60km thick. It has a higher density and different chemical composition than the layers below.
2. The mantle, which extends from the crust to a depth of 2900km. It has a lower density than the crust but higher than the core. Seismic waves slow down in the upper mantle.
3. The core, the deepest layer extending from 2900km to Earth's center. It has an even higher density and the outer core is liquid, as shown by the absence of S waves.
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The document summarizes the composition and structure of the Earth. It is divided into four main layers: the crust, mantle, outer core, and inner core. The crust is the outermost solid rock layer that is broken into tectonic plates. Below the crust is the mantle, which is the largest layer made of silicate rock. At the center is the inner core made of solid iron, surrounded by the outer core of liquid iron and nickel that generates the Earth's magnetic field.
Layers of earth
The document summarizes the main layers and divisions of the Earth based on their chemical composition and physical properties. It is divided into three main layers:
1. The crust, which is the outermost solid layer and varies in thickness between continental and oceanic crust.
2. The mantle, which makes up over 80% of the Earth's volume and can be divided into the upper, lower, and D'' transition zones based on seismic properties.
3. The core, which is divided into a solid inner core and liquid outer core, and makes up about 30% of the Earth's mass.
Earth crust
The document describes the four main layers of Earth: crust, mantle, outer core, and inner core. The crust is the thinnest layer and is divided into continental and oceanic crust. Below the crust is the mantle, which makes up over 80% of Earth's volume and is composed of iron-rich rock. Within the mantle are the lithosphere and asthenosphere layers. The outer core is liquid, while the inner core is solid due to extreme pressure. Seismic waves have helped scientists determine the composition of Earth's layers.
Layers of-earth
The Earth is composed of four main layers from outermost to innermost: the crust, mantle, outer core, and inner core. The crust is the top layer and is divided into continental and oceanic crust of varying thicknesses and compositions. Below the crust is the mantle, which makes up over 80% of the Earth's volume and contains silicate rocks. The mantle is divided into the lithosphere, asthenosphere, and mesosphere. The outer core is made of liquid iron and nickel, while the inner core is solid due to extreme pressure.
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The document describes the different layers that make up the interior of the Earth. It is divided into four main layers from outermost to innermost: the crust, mantle, outer core, and inner core. The crust is the thinnest layer and is made up of either oceanic or continental crust. Below the crust is the mantle, which is the largest layer and makes up most of the Earth's volume. At the center are the outer core, made of liquid iron and nickel, and the solid inner core, also made of iron and nickel.
Layers of the earth
The Earth has four main layers: the crust, mantle, inner core, and outer core. The crust contains two types - continental and oceanic - and is composed primarily of silicon, oxygen, aluminum, and iron. Below the crust lies the mantle, a very thick layer including the asthenosphere. The inner and outer core are mostly iron and nickel and generate the Earth's magnetic field.
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The document discusses the structure of the Earth. It is made up of four main layers from outermost to innermost:
1. Crust - The solid outermost layer, thicker under continents and thinner under oceans, made of granite, basalt, or sedimentary rock.
2. Mantle - Below the crust, made of hot solid rock up to 2,900km thick.
3. Outer core - Below the mantle, very dense but liquid due to extreme heat, made of nickel and iron, 2,250km thick.
4. Inner core - Innermost layer, extremely hot but solid due to extreme pressure, made of nickel and iron, 1,200km thick.
Micro teach: Layers of the Earth
Correction on slide 7- IS hould be Is
Brief summary of each of the layers
As a handout, play dough models of the Earth will be handed out containing layers for people to cut in half and stick labelled toothpicks in each of the layers
layers of the earth
The document summarizes key information about the structure and composition of the Earth. It describes the four major layers from the center out - the inner core, outer core, mantle, and crust. The crust is divided into tectonic plates that move via three processes at their boundaries: convergent, divergent, and sliding. Earthquakes and volcanoes occur as results of this plate tectonic activity and the movement of molten rock within the Earth.
Earth Structure
The document discusses the structure and layers of the Earth. It is composed of four main layers from outermost to innermost:
1) The crust, which is the thin solid outer layer people live on made of rocks and minerals. It is divided into thicker continental crust and thinner oceanic crust.
2) The hot, dense mantle that behaves like a solid but can flow very slowly over geologic timescales. Its convection currents influence plate tectonics at the surface.
3) The liquid outer core that is composed of melted nickel and iron due to extreme heat and pressure.
4) The inner solid core formed from compressed metals vibrating in place like a solid.
Layers of the earth presentation 4
The document describes the four major layers of the Earth:
1) The crust is the top thin solid rock layer where life exists, ranging from 0-870 degrees C in temperature.
2) The thick mantle is the largest layer made of hot dense rock that flows slowly like asphalt.
3) The outer core is a fluid metallic layer that generates Earth's magnetic field and has temperatures over 7,200 degrees F.
4) The inner core is a solid ball of metal deep in Earth's center, kept solid under immense pressure with temperatures over 9,000 degrees F.
INTERIOR OF THE EARTH
The document summarizes the layers that make up the Earth's interior. It is divided into four main layers from outermost to innermost: the crust, mantle, outer core, and inner core. The crust is the topmost layer and ranges from 5-40km thick. It is divided into continental and oceanic crust. Below the crust is the mantle, which is the largest layer and makes up over 80% of the Earth's volume. The outer core is a liquid layer of iron and nickel beneath the mantle. The very center of Earth is the inner core, made of solid iron and nickel.
Interior of earth
The document describes the different layers that make up the interior of the Earth. The crust is the outermost solid shell distinguished from the mantle by its chemical makeup. The mantle is made of rock or ices and is the largest layer beneath the crust. At the center is the core, which is very hot and dense. The outer core is liquid while the inner core is a solid ball.
Earth's layer
The earth is composed of three main layers: the crust, mantle, and core. The crust makes up less than 1% of the earth's mass and is the thinnest layer. Underneath is the mantle, which comprises most of the earth's mass and volume. The mantle originates magma and is divided into upper and lower sections. At the center is the core, with a solid inner core surrounded by a liquid outer core.
Inside the earth
The interior of the Earth is layered in spherical shells like an onion, with each layer defined by its chemical or rheological properties. The crust is the outermost layer, made of oceanic or thicker continental crust. Below is the highly viscous mantle, composed of iron- and magnesium-rich silicate rocks. Within the mantle is the asthenosphere, which flows and moves the tectonic plates atop it. The liquid outer core surrounds a solid inner core, with both cores being the densest parts of the planet. Convection currents in the mantle powered by heat transfer drive the movement of tectonic plates.
Interior of the earth
1) The document provides information about the layers of the Earth, including the crust, mantle, outer core, and inner core.
2) The crust is the outermost layer and is composed of igneous, metamorphic, and sedimentary rocks. The mantle lies below the crust and is mostly solid rock.
3) The outer core is a layer of liquid rock composed of iron and nickel, while the inner core is a solid ball of iron and nickel alloy nearly as hot as the sun's surface.
Earth's subsystems Geosphere
Plate tectonics shapes the Earth's surface through the movement of tectonic plates driven by mantle convection in Earth's interior. The geosphere consists of a thin crust overlaying a thick mantle made up of solid rock that makes up 84% of Earth's volume and lies between the core and crust. The mantle and core are separated by discontinuities discovered by scientists like Mohorovicic and Lehmann.
Chap 2 earth's interior
The document summarizes the layers that make up Earth's interior. It discusses that Earth has a crust, mantle, outer core, and inner core. The crust is divided into continental and oceanic crust, and the Mohorovicic discontinuity separates the crust from the mantle. The mantle is divided into an upper and lower mantle by the Gutenberg discontinuity. The outer core is liquid while the inner core is solid. Earth's magnetic field is generated by convection currents in the liquid outer core.
Inside the earth
The Earth has three main layers - crust, mantle, and core. The crust is the outermost layer and is divided into tectonic plates that slowly drift atop the mantle. Beneath the crust is the mantle, which is made of hot, dense rock and drives plate tectonics through convection currents. At the very center of the Earth is the extremely hot core, with a solid inner core surrounded by a liquid outer core.
Inside the Earth
The document summarizes the structure and composition of the Earth's interior. It describes the Earth as having four main layers from outermost to innermost - the crust, mantle, outer core, and inner core. The crust is the top solid rocky layer that makes up the continents and ocean floors. Below is the mantle, which constitutes 84% of the Earth's volume and is predominantly solid but behaves like a viscous liquid. Within the mantle is the Earth's liquid outer core followed by the inner solid core made of iron and nickel.
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All you have to know about the layers of the earth. Write down the names of the layers and their order. Also you have to know what they are made of, Which one is the hottest, which on is the thickest, and why the core is solid.
Interior of earth
The document summarizes the structure of Earth's interior. It is divided into three main layers:
1. The crust, which is the outermost layer averaging 60km thick. It has a higher density and different chemical composition than the layers below.
2. The mantle, which extends from the crust to a depth of 2900km. It has a lower density than the crust but higher than the core. Seismic waves slow down in the upper mantle.
3. The core, the deepest layer extending from 2900km to Earth's center. It has an even higher density and the outer core is liquid, as shown by the absence of S waves.
The composition and structure of earth
The document summarizes the composition and structure of the Earth. It is divided into four main layers: the crust, mantle, outer core, and inner core. The crust is the outermost solid rock layer that is broken into tectonic plates. Below the crust is the mantle, which is the largest layer made of silicate rock. At the center is the inner core made of solid iron, surrounded by the outer core of liquid iron and nickel that generates the Earth's magnetic field.
Layers of earth
The document summarizes the main layers and divisions of the Earth based on their chemical composition and physical properties. It is divided into three main layers:
1. The crust, which is the outermost solid layer and varies in thickness between continental and oceanic crust.
2. The mantle, which makes up over 80% of the Earth's volume and can be divided into the upper, lower, and D'' transition zones based on seismic properties.
3. The core, which is divided into a solid inner core and liquid outer core, and makes up about 30% of the Earth's mass.
Earth crust
The document describes the four main layers of Earth: crust, mantle, outer core, and inner core. The crust is the thinnest layer and is divided into continental and oceanic crust. Below the crust is the mantle, which makes up over 80% of Earth's volume and is composed of iron-rich rock. Within the mantle are the lithosphere and asthenosphere layers. The outer core is liquid, while the inner core is solid due to extreme pressure. Seismic waves have helped scientists determine the composition of Earth's layers.
Layers of-earth
The Earth is composed of four main layers from outermost to innermost: the crust, mantle, outer core, and inner core. The crust is the top layer and is divided into continental and oceanic crust of varying thicknesses and compositions. Below the crust is the mantle, which makes up over 80% of the Earth's volume and contains silicate rocks. The mantle is divided into the lithosphere, asthenosphere, and mesosphere. The outer core is made of liquid iron and nickel, while the inner core is solid due to extreme pressure.
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The document describes the different layers that make up the interior of the Earth. It is divided into four main layers from outermost to innermost: the crust, mantle, outer core, and inner core. The crust is the thinnest layer and is made up of either oceanic or continental crust. Below the crust is the mantle, which is the largest layer and makes up most of the Earth's volume. At the center are the outer core, made of liquid iron and nickel, and the solid inner core, also made of iron and nickel.
Layers of the earth
The Earth has four main layers: the crust, mantle, inner core, and outer core. The crust contains two types - continental and oceanic - and is composed primarily of silicon, oxygen, aluminum, and iron. Below the crust lies the mantle, a very thick layer including the asthenosphere. The inner and outer core are mostly iron and nickel and generate the Earth's magnetic field.
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The document discusses the structure of the Earth. It is made up of four main layers from outermost to innermost:
1. Crust - The solid outermost layer, thicker under continents and thinner under oceans, made of granite, basalt, or sedimentary rock.
2. Mantle - Below the crust, made of hot solid rock up to 2,900km thick.
3. Outer core - Below the mantle, very dense but liquid due to extreme heat, made of nickel and iron, 2,250km thick.
4. Inner core - Innermost layer, extremely hot but solid due to extreme pressure, made of nickel and iron, 1,200km thick.
Micro teach: Layers of the Earth
Correction on slide 7- IS hould be Is
Brief summary of each of the layers
As a handout, play dough models of the Earth will be handed out containing layers for people to cut in half and stick labelled toothpicks in each of the layers
layers of the earth
The document summarizes key information about the structure and composition of the Earth. It describes the four major layers from the center out - the inner core, outer core, mantle, and crust. The crust is divided into tectonic plates that move via three processes at their boundaries: convergent, divergent, and sliding. Earthquakes and volcanoes occur as results of this plate tectonic activity and the movement of molten rock within the Earth.
Earth Structure
The document discusses the structure and layers of the Earth. It is composed of four main layers from outermost to innermost:
1) The crust, which is the thin solid outer layer people live on made of rocks and minerals. It is divided into thicker continental crust and thinner oceanic crust.
2) The hot, dense mantle that behaves like a solid but can flow very slowly over geologic timescales. Its convection currents influence plate tectonics at the surface.
3) The liquid outer core that is composed of melted nickel and iron due to extreme heat and pressure.
4) The inner solid core formed from compressed metals vibrating in place like a solid.
Layers of the earth presentation 4
The document describes the four major layers of the Earth:
1) The crust is the top thin solid rock layer where life exists, ranging from 0-870 degrees C in temperature.
2) The thick mantle is the largest layer made of hot dense rock that flows slowly like asphalt.
3) The outer core is a fluid metallic layer that generates Earth's magnetic field and has temperatures over 7,200 degrees F.
4) The inner core is a solid ball of metal deep in Earth's center, kept solid under immense pressure with temperatures over 9,000 degrees F.
INTERIOR OF THE EARTH
The document summarizes the layers that make up the Earth's interior. It is divided into four main layers from outermost to innermost: the crust, mantle, outer core, and inner core. The crust is the topmost layer and ranges from 5-40km thick. It is divided into continental and oceanic crust. Below the crust is the mantle, which is the largest layer and makes up over 80% of the Earth's volume. The outer core is a liquid layer of iron and nickel beneath the mantle. The very center of Earth is the inner core, made of solid iron and nickel.
Interior of earth
The document describes the different layers that make up the interior of the Earth. The crust is the outermost solid shell distinguished from the mantle by its chemical makeup. The mantle is made of rock or ices and is the largest layer beneath the crust. At the center is the core, which is very hot and dense. The outer core is liquid while the inner core is a solid ball.
Earth's layer
The earth is composed of three main layers: the crust, mantle, and core. The crust makes up less than 1% of the earth's mass and is the thinnest layer. Underneath is the mantle, which comprises most of the earth's mass and volume. The mantle originates magma and is divided into upper and lower sections. At the center is the core, with a solid inner core surrounded by a liquid outer core.
Inside the earth
The interior of the Earth is layered in spherical shells like an onion, with each layer defined by its chemical or rheological properties. The crust is the outermost layer, made of oceanic or thicker continental crust. Below is the highly viscous mantle, composed of iron- and magnesium-rich silicate rocks. Within the mantle is the asthenosphere, which flows and moves the tectonic plates atop it. The liquid outer core surrounds a solid inner core, with both cores being the densest parts of the planet. Convection currents in the mantle powered by heat transfer drive the movement of tectonic plates.
Interior of the earth
1) The document provides information about the layers of the Earth, including the crust, mantle, outer core, and inner core.
2) The crust is the outermost layer and is composed of igneous, metamorphic, and sedimentary rocks. The mantle lies below the crust and is mostly solid rock.
3) The outer core is a layer of liquid rock composed of iron and nickel, while the inner core is a solid ball of iron and nickel alloy nearly as hot as the sun's surface.
Earth's subsystems Geosphere
Plate tectonics shapes the Earth's surface through the movement of tectonic plates driven by mantle convection in Earth's interior. The geosphere consists of a thin crust overlaying a thick mantle made up of solid rock that makes up 84% of Earth's volume and lies between the core and crust. The mantle and core are separated by discontinuities discovered by scientists like Mohorovicic and Lehmann.
Chap 2 earth's interior
The document summarizes the layers that make up Earth's interior. It discusses that Earth has a crust, mantle, outer core, and inner core. The crust is divided into continental and oceanic crust, and the Mohorovicic discontinuity separates the crust from the mantle. The mantle is divided into an upper and lower mantle by the Gutenberg discontinuity. The outer core is liquid while the inner core is solid. Earth's magnetic field is generated by convection currents in the liquid outer core.
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The Earth has three main layers - crust, mantle, and core. The crust is the outermost layer and is divided into tectonic plates that slowly drift atop the mantle. Beneath the crust is the mantle, which is made of hot, dense rock and drives plate tectonics through convection currents. At the very center of the Earth is the extremely hot core, with a solid inner core surrounded by a liquid outer core.
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The document summarizes the structure and composition of the Earth's interior. It describes the Earth as having four main layers from outermost to innermost - the crust, mantle, outer core, and inner core. The crust is the top solid rocky layer that makes up the continents and ocean floors. Below is the mantle, which constitutes 84% of the Earth's volume and is predominantly solid but behaves like a viscous liquid. Within the mantle is the Earth's liquid outer core followed by the inner solid core made of iron and nickel.
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The document describes the layers of the Earth, including the crust, mantle, outer core, and inner core. It provides details on the composition, thickness, and properties of each layer. The crust is the outermost solid layer and is divided into continental and oceanic crust. Beneath the crust is the mantle, which makes up over 80% of the Earth's volume and is divided into the upper, transition, and lower mantle zones. The outer core is liquid, while the inner core is solid.
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D. VELOCITY AND DENSITY VARIATION WITHIN THE EARTH
The immense amount of heat energy released from gravitational energy and from the decay of radioactive elements melted the entire planet, and it is still cooling off today. Denser materials like iron (Fe) sank into the core of the Earth, while lighter silicates (Si), other oxygen (O) compounds, and water rose near the surface.
The earth is divided into four main layers: the inner core, outer core, mantle, and crust. The core is composed mostly of iron (Fe) and is so hot that the outer core is molten, with about 10% sulphur (S). The inner core is under such extreme pressure that it remains solid. Most of the Earth's mass is in the mantle, which is composed of iron (Fe), magnesium (Mg), aluminum (Al), silicon (Si), and oxygen (O) silicate compounds. At over 1000 degrees C, the mantle is solid but can deform slowly in a plastic manner. The crust is much thinner than any of the other layers, and is composed of the least dense potassium (K), calcium (Ca) and sodium (Na) aluminum-silicate minerals. Being relatively cold, the crust is rocky and brittle, so it can fracture in earthquakes.
3 layer of the earth and description
The Earth is composed of three main layers: the crust, mantle, and core. The crust is the thin, outermost layer that makes up only 1% of the Earth's mass and contains the continents and ocean basins. Below the crust lies the mantle, a dense, hot layer of semi-solid rock that is approximately 2,900 km thick and drives plate tectonics. The Earth's core is the innermost layer and makes up nearly one third of the planet's mass, consisting of a liquid outer core and solid inner core made of iron and nickel.
Structure and composition.pdf
The document summarizes the three main layers that make up the structure of the Earth:
1. The crust is the outermost layer and is divided into continental and oceanic crust. The oceanic crust is thinner, around 5-10 km thick, and composed mainly of basalt.
2. The mantle is the largest layer and makes up most of the Earth's volume. It is around 2900 km thick and can be divided into upper and lower mantle layers.
3. The core is the innermost layer and can be divided into a solid inner core and liquid outer core which generates the Earth's magnetic field.
STRUCTURE AND COMPOSITION OF EARTH
The document summarizes the three main layers that make up the structure of the Earth:
1. The crust is the outermost layer and is divided into continental and oceanic crust. The continental crust is thicker while the oceanic crust is thinner.
2. The mantle is the largest layer and is divided into upper and lower mantle. It is composed mainly of iron and magnesium and contains most of the Earth's internal heat.
3. The core is divided into a solid inner core and liquid outer core. The outer core is responsible for the Earth's magnetic field and rotation, while the inner core is made mostly of solid iron.
L3 EARTH'S INTERNAL HEAT.pptx
Earth's internal heat comes from three main sources:
1) The accretion of dust and gas particles during the Earth's formation released gravitational potential energy and caused internal heating.
2) Radioactive decay of elements in the Earth's core and mantle, such as uranium and potassium, continues to generate heat.
3) Frictional heating from convection currents in the mantle also contributes to the Earth's internal heat. Seismic waves have allowed scientists to indirectly learn about the Earth's layered structure despite only drilling about 7 miles deep.
The earth part ii
The document describes the layers that make up the Earth's interior. It discusses the core, mantle, crust, and lithosphere. The core is divided into a solid inner core and liquid outer core. The mantle is below the core and comprises most of the Earth's volume. It is divided into upper and lower mantle. The crust sits atop the mantle and exists in oceanic and continental forms. The lithosphere includes the crust and upper mantle. The document also provides background on the formation of the Earth and different types of rocks.
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Layers of the earth (custodio)
- 1. Layers of the Earth Created by: Charles Custodio
- 2. Layers based on chemical composition During Earth’s early formation, the planet underwent a period of differentiation that allowed the heaviest elements to sink to the center and lighter ones to rise to the surface. Earth’s internal layering can be defined by this resulting chemical composition. The three main layers of Earth include the crust the mantle and the core.
- 3. Crust ▪ The solid crust is the outermost and thinnest layer of our planet. ▪ The crust averages 25 miles in thickness and is divided in to fifteen major tectonic plates that are rigid in the center and have geologic activity at the boundaries, such as earthquakes and volcanism. ▪ The most abundant elements in the Earth’s crust include oxygen, silicon, aluminum, iron, and calcium. These elements combine to form the most abundant minerals in the Earth’s crust, members of the silicate family
- 4. Crust ▪ Crustal material is classified as oceanic crust or continental crust. Oceanic crust underlies our ocean basins, is thin, approximately 4 miles in thickness, and is composed of dense rocks, primarily the igneous rock basalt. Continental crust is thicker, ranging from 6 to 47 miles, and has a high abundance of the less dense igneous rock granite. The oldest rocks on our planet are part of the continental crust and date back approximately 4 billion years in age. Ocean crust is constantly recycled through our planet’s system of plate tectonics and only dates back to approximately 200 million years ago.
- 5. Mantle ▪ Mantle material is hot and dense and moves as semi-solid rock. The mantle is 1,802 miles thick and is composed of silicate minerals that are similar to ones found in the crust, except with more magnesium and iron and less silicon and aluminum. ▪ The base of the mantle, at the boundary with the outer core, is termed the Gutenberg discontinuity. It is at this depth where secondary earthquake waves, or S waves, disappear, as S waves cannot travel through liquid.
- 6. Outer Core ▪ The outer core is composed mostly of iron and nickel, with these metals found in liquid form. The outer core reaches between 7,200 and 9,000 degrees Fahrenheit (4,000 and 5,000 degrees Celsius) and is estimated to be 1,430 miles (2,300 km) thick. It is the movement of the liquid within the outer core that generates Earth’s magnetic field.
- 7. Inner Core ▪ The inner core is the hottest part of our planet, at temperatures between 9,000 and 13,000 degrees Fahrenheit (5,000 and 7,000 degrees Celsius). This solid layer is smaller than our Moon at 750 miles (1,200 km) thick and is composed mostly of iron. The iron is under so much pressure from the overlying planet that it cannot melt and stays in a solid state.
- 8. Thank you