Normal Fault
... within the earth. • Earthquakes are divided into 3 categories depending on how deep the focus point is – shallow-focus (within 60 kilometers), intermediate focus (60-150 kilometers), and deep-focus (150+ kilometers) • Since Earth’s lithosphere is typically only that deep on continents, deep-focus ea ...
... within the earth. • Earthquakes are divided into 3 categories depending on how deep the focus point is – shallow-focus (within 60 kilometers), intermediate focus (60-150 kilometers), and deep-focus (150+ kilometers) • Since Earth’s lithosphere is typically only that deep on continents, deep-focus ea ...
Plate Tectonics - John Bowne High School
... the movement of heated matter. Convection currents in the mantle are thought to be the driving mechanism of plate movements. Convection currents in this part of the mantle are set in motion by the transfer of energy between Earth’s hot interior and its cooler exterior. It is hypothesized that ...
... the movement of heated matter. Convection currents in the mantle are thought to be the driving mechanism of plate movements. Convection currents in this part of the mantle are set in motion by the transfer of energy between Earth’s hot interior and its cooler exterior. It is hypothesized that ...
Define and Differentiate Earthquakes and Plate Tectonics Submitted
... as at midoceanic ridges. These huge underwater mountains often have a central graben feature, or rift valley, that forms at the crest of the ridge. The formation of new ocean crust that is pushed away from both sides of the ridge fault creates a tensional setting that results in the formation of the ...
... as at midoceanic ridges. These huge underwater mountains often have a central graben feature, or rift valley, that forms at the crest of the ridge. The formation of new ocean crust that is pushed away from both sides of the ridge fault creates a tensional setting that results in the formation of the ...
Classroom Teacher Preparation Earth Science 15: Seismic Waves
... Crust – The solid outermost layer of the earth Mantle – The portion of the earth between the crust and the core; it makes up about 45% of the earth’s interior o Note that the uppermost part of the mantle is solid and is considered part of the lithosphere Core – The innermost layers of the earth; it ...
... Crust – The solid outermost layer of the earth Mantle – The portion of the earth between the crust and the core; it makes up about 45% of the earth’s interior o Note that the uppermost part of the mantle is solid and is considered part of the lithosphere Core – The innermost layers of the earth; it ...
Volcanoes
... 1 Divergent boundary, e.g. ocean (sea) floor spreading at mid-ocean ridges - by moving apart with molten rock rising to form new ocean floor at the middle seem; 2 Convergent boundary; typically leads to subduction - one plate slides under another; the lower one may reach the depth of about 700 km, i ...
... 1 Divergent boundary, e.g. ocean (sea) floor spreading at mid-ocean ridges - by moving apart with molten rock rising to form new ocean floor at the middle seem; 2 Convergent boundary; typically leads to subduction - one plate slides under another; the lower one may reach the depth of about 700 km, i ...
msword - rgs.org
... Continental fit The east coast of South America and the west coast of Africa fit together with very few gaps. Common geology Rare Devonian violet quartzites are found in parts of Brazil and South Africa. These areas would have been adjacent when the two continents were joined. Flora and fauna fossil ...
... Continental fit The east coast of South America and the west coast of Africa fit together with very few gaps. Common geology Rare Devonian violet quartzites are found in parts of Brazil and South Africa. These areas would have been adjacent when the two continents were joined. Flora and fauna fossil ...
KS3 Russia
... Continental fit The east coast of South America and the west coast of Africa fit together with very few gaps. Common geology Rare Devonian violet quartzites are found in parts of Brazil and South Africa. These areas would have been adjacent when the two continents were joined. Flora and fauna fossil ...
... Continental fit The east coast of South America and the west coast of Africa fit together with very few gaps. Common geology Rare Devonian violet quartzites are found in parts of Brazil and South Africa. These areas would have been adjacent when the two continents were joined. Flora and fauna fossil ...
Last Time Polymorphs of SiO2 - University of South Alabama
... the formation of “shadow zones” where P or S-waves do not occur. ...
... the formation of “shadow zones” where P or S-waves do not occur. ...
File - Ms Dudek`s Website
... c. Your teacher will add icing for you to use to represent the asthenosphere. Spread the asthenosphere about .5 cm thick on the wax paper. 2. Model 1: Divergent Plate Boundaries, Oceanic/Oceanic a. Place two squares of fruit roll up (oceanic plates) onto the frosting side by side. b. Slowly press do ...
... c. Your teacher will add icing for you to use to represent the asthenosphere. Spread the asthenosphere about .5 cm thick on the wax paper. 2. Model 1: Divergent Plate Boundaries, Oceanic/Oceanic a. Place two squares of fruit roll up (oceanic plates) onto the frosting side by side. b. Slowly press do ...
Name: Date: Earth and Environmental FINAL Study Guide What is a
... 12. Describe the three types of sedimentary rocks: a. clastic ...
... 12. Describe the three types of sedimentary rocks: a. clastic ...
IGNEOUS and METAMORPHIC PETROLOGY
... Figure 1-3. Variation in P and S wave velocities with depth. Compositional subdivisions of the Earth are on the left, rheological subdivisions on the right. After Kearey and Vine (1990), Global Tectonics. © Blackwell Scientific. Oxford. ...
... Figure 1-3. Variation in P and S wave velocities with depth. Compositional subdivisions of the Earth are on the left, rheological subdivisions on the right. After Kearey and Vine (1990), Global Tectonics. © Blackwell Scientific. Oxford. ...
Supplemental Readings on Plate Tectonics and
... where it only partially melts-we'll find out why it melts when we study the origin of magma later in the semester. Note that, in this model, active upwelling of hot mantle rock is NOT the driving force for sea-floor spreading. Hot mantle rock is NOT actively pushing aside the two plates as it rises ...
... where it only partially melts-we'll find out why it melts when we study the origin of magma later in the semester. Note that, in this model, active upwelling of hot mantle rock is NOT the driving force for sea-floor spreading. Hot mantle rock is NOT actively pushing aside the two plates as it rises ...
PLATE TECTONICS
... • Scientists assumed at the time that the reason mountains happen was because the earth is cooling and “shriveling up” so to speak. • Wegener said that if this were so, mountains would be everywhere and not in the thin, narrow bands where the really are. ...
... • Scientists assumed at the time that the reason mountains happen was because the earth is cooling and “shriveling up” so to speak. • Wegener said that if this were so, mountains would be everywhere and not in the thin, narrow bands where the really are. ...
Unit B: Geology of the Seafloor
... Students will understand the dynamic processes & interactions that determine the surface features of Earth. ...
... Students will understand the dynamic processes & interactions that determine the surface features of Earth. ...
12.479 Trace-Element Geochemistry
... MORB magma erupts into seawater is unequivocally a quenched melt. However, this glass, and MORB whole-rocks in general, are characterized by relatively low (i.e., depleted) abundances of highly incompatible elements; this is a paradoxical result since by definition highly incompatible elements are e ...
... MORB magma erupts into seawater is unequivocally a quenched melt. However, this glass, and MORB whole-rocks in general, are characterized by relatively low (i.e., depleted) abundances of highly incompatible elements; this is a paradoxical result since by definition highly incompatible elements are e ...
The core
... • It is very thin compared with the mantle and core. • It is made up of hard, solid rocks. • There are two zones: The oceanic crust: this is found on the ocean floor. It is thinner and denser than the continental crust. ...
... • It is very thin compared with the mantle and core. • It is made up of hard, solid rocks. • There are two zones: The oceanic crust: this is found on the ocean floor. It is thinner and denser than the continental crust. ...
earth - Lake Travis ISD
... • Ocean crust and continental crust material is consumed in Subduction Zones. These are places where heavier oceanic crust slides beneath lighter rocks of the continental crust. A good example of this is along the west coast of South America beneath the Andes. ...
... • Ocean crust and continental crust material is consumed in Subduction Zones. These are places where heavier oceanic crust slides beneath lighter rocks of the continental crust. A good example of this is along the west coast of South America beneath the Andes. ...
Geology
... What is the author’s purpose? A. To give information about the earth B. To give directions about the weather C. To entertain you with a story about the earth. D. To persuade you to be a geologist ...
... What is the author’s purpose? A. To give information about the earth B. To give directions about the weather C. To entertain you with a story about the earth. D. To persuade you to be a geologist ...
phy226 tutorial kit - Covenant University
... like that of an onion or a baked cake. The boundaries between the layers are marked by abrupt changes in seismic velocity or velocity gradient. Each layer is characterized by a specific set of physical properties, which is determined by the composition, pressure and temperature in the layer. The Ear ...
... like that of an onion or a baked cake. The boundaries between the layers are marked by abrupt changes in seismic velocity or velocity gradient. Each layer is characterized by a specific set of physical properties, which is determined by the composition, pressure and temperature in the layer. The Ear ...
Earth & Layers
... • Earth has 3 layers in the inside- the crust, mantle, and core. • The lightest materials make up the outermost layer, and densest materials make up the inner layers. This is because lighter materials tend to float up, while heavier materials sink. • Earth’s layers are made of different physical mix ...
... • Earth has 3 layers in the inside- the crust, mantle, and core. • The lightest materials make up the outermost layer, and densest materials make up the inner layers. This is because lighter materials tend to float up, while heavier materials sink. • Earth’s layers are made of different physical mix ...
Unit 5 – Planet Earth
... What technologies helped to prove Wegener’s theory about Continental Drift, and laid the framework for the new Theory of Plate Tectonics? ...
... What technologies helped to prove Wegener’s theory about Continental Drift, and laid the framework for the new Theory of Plate Tectonics? ...
The Layers of Earth, Plate Tectonics, Volcanoes, and Earthquakes
... Convection- a process by which energy is transferred to cause warmer less dense air or liquid to rise while the dense cooler liquid or air is pushed down. Tectonic plates- sections of Earth’s upper layer that includes both crust and mantle material (lithosphere broken into pieces). Continental drift ...
... Convection- a process by which energy is transferred to cause warmer less dense air or liquid to rise while the dense cooler liquid or air is pushed down. Tectonic plates- sections of Earth’s upper layer that includes both crust and mantle material (lithosphere broken into pieces). Continental drift ...
Hydrothermal vent glossary: elementary
... Huge, mobile rock slabs of varying sizes and thicknesses that form the earth's crust. Existing at or from the beginning of time. An opening or fissure. In geology, a large fault caused mainly by lateral movement. The trough formed between two fault zones. Unmanned submersible tethered to a mother sh ...
... Huge, mobile rock slabs of varying sizes and thicknesses that form the earth's crust. Existing at or from the beginning of time. An opening or fissure. In geology, a large fault caused mainly by lateral movement. The trough formed between two fault zones. Unmanned submersible tethered to a mother sh ...
ag earth science - Sonoma Valley High School
... What was the super-continent called in the continental drift theory? What evidence was used to form the plate tectonics theory? How does Continental Drift and Plate Tectonics differ? What is the lithosphere? Be able to label a picture. What is included What are the three types of plate boundaries? B ...
... What was the super-continent called in the continental drift theory? What evidence was used to form the plate tectonics theory? How does Continental Drift and Plate Tectonics differ? What is the lithosphere? Be able to label a picture. What is included What are the three types of plate boundaries? B ...
Species and Areas: History of Ideas Earth History: Plate Tectonics
... across a hotspot, a long line of volcanic islands or subsequently eroded seamounts is formed. ...
... across a hotspot, a long line of volcanic islands or subsequently eroded seamounts is formed. ...
Plate tectonics
Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός ""pertaining to building"") is a scientific theory that describes the large-scale motion of Earth's lithosphere. This theoretical model builds on the concept of continental drift which was developed during the first few decades of the 20th century. The geoscientific community accepted the theory after the concepts of seafloor spreading were later developed in the late 1950s and early 1960s.The lithosphere, which is the rigid outermost shell of a planet (on Earth, the crust and upper mantle), is broken up into tectonic plates. On Earth, there are seven or eight major plates (depending on how they are defined) and many minor plates. Where plates meet, their relative motion determines the type of boundary; convergent, divergent, or transform. Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries. The lateral relative movement of the plates typically varies from zero to 100 mm annually.Tectonic plates are composed of oceanic lithosphere and thicker continental lithosphere, each topped by its own kind of crust. Along convergent boundaries, subduction carries plates into the mantle; the material lost is roughly balanced by the formation of new (oceanic) crust along divergent margins by seafloor spreading. In this way, the total surface of the globe remains the same. This prediction of plate tectonics is also referred to as the conveyor belt principle. Earlier theories (that still have some supporters) propose gradual shrinking (contraction) or gradual expansion of the globe.Tectonic plates are able to move because the Earth's lithosphere has greater strength than the underlying asthenosphere. Lateral density variations in the mantle result in convection. Plate movement is thought to be driven by a combination of the motion of the seafloor away from the spreading ridge (due to variations in topography and density of the crust, which result in differences in gravitational forces) and drag, with downward suction, at the subduction zones. Another explanation lies in the different forces generated by the rotation of the globe and the tidal forces of the Sun and Moon. The relative importance of each of these factors and their relationship to each other is unclear, and still the subject of much debate.