Class notes (*) - LSU Geology & Geophysics
... Key parts of Plate Tectonics Lithosphere or rigid lid that holds both crust and cold mantle together as one solid block (0100km) asthenoshphere or plastic,ductile, layer also within the mantle (100km depth to 300 km depth??) ...
... Key parts of Plate Tectonics Lithosphere or rigid lid that holds both crust and cold mantle together as one solid block (0100km) asthenoshphere or plastic,ductile, layer also within the mantle (100km depth to 300 km depth??) ...
Profile: Harry Hess: One of the Discoverers of Seafloor Spreading
... the surface of the Earth is not fixed, but rather broken up like a jigsaw puzzle into enormous plates that move. This process is called plate tectonics, and it transformed the thinking of geologists. One of them, Harry Hess, was an instrumental figure in figuring out how plate ...
... the surface of the Earth is not fixed, but rather broken up like a jigsaw puzzle into enormous plates that move. This process is called plate tectonics, and it transformed the thinking of geologists. One of them, Harry Hess, was an instrumental figure in figuring out how plate ...
How The Earth Works
... 35 minutes to birth of Christ 1 hour+ to pyramids 3 hours to retreat of glaciers from Wisconsin 12 days = 1 million years 2 years to extinction of dinosaurs 14 years to age of Niagara Escarpment 31 years = 1 billion years ...
... 35 minutes to birth of Christ 1 hour+ to pyramids 3 hours to retreat of glaciers from Wisconsin 12 days = 1 million years 2 years to extinction of dinosaurs 14 years to age of Niagara Escarpment 31 years = 1 billion years ...
Inner Core
... Teacher Version – things that you need to know for Tues., 09/15 quiz are highlighted - FIB words are in blue - with additional words you need to add to your note sheet written in red ...
... Teacher Version – things that you need to know for Tues., 09/15 quiz are highlighted - FIB words are in blue - with additional words you need to add to your note sheet written in red ...
Learning Target 1
... spread out beneath the lithosphere, causing the movement of Earth's plates. As the plates move, they produce changes in Earth's surface, including volcanoes, mountain ranges, and deep-ocean trenches. The edges of different pieces of the lithosphere meet at lines called plate boundaries. Faults—break ...
... spread out beneath the lithosphere, causing the movement of Earth's plates. As the plates move, they produce changes in Earth's surface, including volcanoes, mountain ranges, and deep-ocean trenches. The edges of different pieces of the lithosphere meet at lines called plate boundaries. Faults—break ...
Earthquakes – moving facts - Schulbuchzentrum
... The earthquake in Chile was significantly stronger than that in Haiti, yet it was in the small Caribbean country that considerably more people lost their lives. How come? The answer is very simple: Chile is far better prepared for such disasters. Latin America’s most prosperous country has strict bu ...
... The earthquake in Chile was significantly stronger than that in Haiti, yet it was in the small Caribbean country that considerably more people lost their lives. How come? The answer is very simple: Chile is far better prepared for such disasters. Latin America’s most prosperous country has strict bu ...
As we told you in a recent Instruction, much of the Earth`s
... Plate Boundary Zones Some boundaries between plates are not clear-cut or simple. In some places, boundaries are not well defined because deformation (structural change) takes place over a very broad belt called a plate boundary zone. The Mediterranean-Alpine region between and Eurasian and African P ...
... Plate Boundary Zones Some boundaries between plates are not clear-cut or simple. In some places, boundaries are not well defined because deformation (structural change) takes place over a very broad belt called a plate boundary zone. The Mediterranean-Alpine region between and Eurasian and African P ...
Overview Plate Tectonics
... A. Using ______________ waves, scientists discovered a system of underwater mountain ranges called the mid-ocean ridges in many oceans. B. In the 1960s, Harry Hess suggested the theory of ___________________________ to explain the ridges. 1. Hot, less dense material below Earth’s ______________ rise ...
... A. Using ______________ waves, scientists discovered a system of underwater mountain ranges called the mid-ocean ridges in many oceans. B. In the 1960s, Harry Hess suggested the theory of ___________________________ to explain the ridges. 1. Hot, less dense material below Earth’s ______________ rise ...
plate boundaries
... lithospheric plate that slides by another plate is called a transform fault boundary. ...
... lithospheric plate that slides by another plate is called a transform fault boundary. ...
Changing Earth/Earth System
... a.8.11 Use models to analyze the size and shape of Earth, its surface and its interior (e.g., globes, topographic maps, satellite images). a.8.12 Explain that some processes involved in the rock cycle are directly related to the thermal energy and forces in the mantle that drive plate motions. a.8.1 ...
... a.8.11 Use models to analyze the size and shape of Earth, its surface and its interior (e.g., globes, topographic maps, satellite images). a.8.12 Explain that some processes involved in the rock cycle are directly related to the thermal energy and forces in the mantle that drive plate motions. a.8.1 ...
How do we know the age of the seafloor?
... Scientists can determine the age of the seafloor thanks to the changing magnetic field of our planet. Every once in a while, the currents in the liquid core, which create the Earth’s magnetic field, reverse themselves: it is called a geomagnetic reversal. This has happened many times throughout Eart ...
... Scientists can determine the age of the seafloor thanks to the changing magnetic field of our planet. Every once in a while, the currents in the liquid core, which create the Earth’s magnetic field, reverse themselves: it is called a geomagnetic reversal. This has happened many times throughout Eart ...
Lesson Plan: Plate Tectonics
... Plate tectonics The Earth’s crust is divided into a series of plates that are continually moving, colliding or pulling apart relative to each other. The Earth’s crust consists of nine large plates and ...
... Plate tectonics The Earth’s crust is divided into a series of plates that are continually moving, colliding or pulling apart relative to each other. The Earth’s crust consists of nine large plates and ...
Earth science SOL Review
... 77. Ocean crust is thinner, younger, and denser than continental crust. It is made of basalt. 78. Convection currents move tectonic plates. Hot material rises, cools, becomes more dense, and sinks. 79. Convergent boundaries are colliding plates which cause folded or thrust faulted mountains, subduct ...
... 77. Ocean crust is thinner, younger, and denser than continental crust. It is made of basalt. 78. Convection currents move tectonic plates. Hot material rises, cools, becomes more dense, and sinks. 79. Convergent boundaries are colliding plates which cause folded or thrust faulted mountains, subduct ...
Layers of the Earth
... • The layer of rock that forms Earth’s outer surface. • The crust is up to 32 Kilometers (20 miles - here to Stone Mountain) thick. • The crust is made up of the continents and the ocean floor. • The crust is thickest under high mountains and thinnest beneath the ocean. • The continental crust consi ...
... • The layer of rock that forms Earth’s outer surface. • The crust is up to 32 Kilometers (20 miles - here to Stone Mountain) thick. • The crust is made up of the continents and the ocean floor. • The crust is thickest under high mountains and thinnest beneath the ocean. • The continental crust consi ...
key1 - Scioly.org
... d. Observers in the research submarine, the Alvin, have seen submarine volcanoes e. The sea floor is made of basalt. 3. Major earthquakes and volcanic eruptions a. do not occur at similar locations. b. usually occur on the boundaries of plates or at hot spots. c. usually occur at the center of plate ...
... d. Observers in the research submarine, the Alvin, have seen submarine volcanoes e. The sea floor is made of basalt. 3. Major earthquakes and volcanic eruptions a. do not occur at similar locations. b. usually occur on the boundaries of plates or at hot spots. c. usually occur at the center of plate ...
test - Scioly.org
... d. Observers in the research submarine, the Alvin, have seen submarine volcanoes e. The sea floor is made of basalt. 3. Major earthquakes and volcanic eruptions a. do not occur at similar locations. b. usually occur on the boundaries of plates or at hot spots. c. usually occur at the center of plate ...
... d. Observers in the research submarine, the Alvin, have seen submarine volcanoes e. The sea floor is made of basalt. 3. Major earthquakes and volcanic eruptions a. do not occur at similar locations. b. usually occur on the boundaries of plates or at hot spots. c. usually occur at the center of plate ...
Earth`s Interior and Plate Tectonics Quiz Review
... Aleutian Islands ____________________________________________________________ Hawaiian Islands ____________________________________________________________ Japanese Islands ____________________________________________________________ San Andreas Fault ________________________________________________ ...
... Aleutian Islands ____________________________________________________________ Hawaiian Islands ____________________________________________________________ Japanese Islands ____________________________________________________________ San Andreas Fault ________________________________________________ ...
Plate Tectonics
... Subduction- the process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent boundary New crust is hot—less dense Old crust is cool—more dense ○ Cool, dense crust of ocean might collide with edge of continent Gravity pulls the older, more dense ocea ...
... Subduction- the process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent boundary New crust is hot—less dense Old crust is cool—more dense ○ Cool, dense crust of ocean might collide with edge of continent Gravity pulls the older, more dense ocea ...
(with Death Valley) Geoscience 10: Geology of The National Parks
... less dense and floats on layers below; Core has solid inner part (higher pressure squeezes to solid) and liquid outer part; Crust plus upper mantle (called lithosphere) tend to break not flow; deeper in mantle tends to flow not break (asthenosphere, plus other names and layers we won’t worry about) ...
... less dense and floats on layers below; Core has solid inner part (higher pressure squeezes to solid) and liquid outer part; Crust plus upper mantle (called lithosphere) tend to break not flow; deeper in mantle tends to flow not break (asthenosphere, plus other names and layers we won’t worry about) ...
LT3ActivityPacket
... The theory of plate tectonics states that the crust of the Earth is composed of 7 major plates and numerous smaller plates. These plates move on the top of the hot plastic upper mantle known as the asthenosphere. This theory also says that most of these plates are in motion, creating a variety of ...
... The theory of plate tectonics states that the crust of the Earth is composed of 7 major plates and numerous smaller plates. These plates move on the top of the hot plastic upper mantle known as the asthenosphere. This theory also says that most of these plates are in motion, creating a variety of ...
Tectonics, Earthquakes and Volcanoes
... oceanic crust is subducted (pulled under)beneath a section of continental crust Subduction zone: Ocean plate slides under continental plate and forms a deep-ocean trench and continental volcanic arc ...
... oceanic crust is subducted (pulled under)beneath a section of continental crust Subduction zone: Ocean plate slides under continental plate and forms a deep-ocean trench and continental volcanic arc ...
Volcano - Lamberth APES
... oceanic crust is subducted (pulled under)beneath a section of continental crust Subduction zone: Ocean plate slides under continental plate and forms a deep-ocean trench and continental volcanic arc ...
... oceanic crust is subducted (pulled under)beneath a section of continental crust Subduction zone: Ocean plate slides under continental plate and forms a deep-ocean trench and continental volcanic arc ...
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.