earth structure ppt
... Core – 2900 km – 6370 km large mass, higher density metal, iron and nickel ...
... Core – 2900 km – 6370 km large mass, higher density metal, iron and nickel ...
L10
... The Earth's lithosphere is broken up into major plates and minor ones. Tectonic plates can include both continental and oceanic areas. Major plates are African Plate, Antarctic Plate, Indian Australian Plate, Eurasian Plate, American Plate, and Pacific Plate. Minor plates include the Arabian Plate, ...
... The Earth's lithosphere is broken up into major plates and minor ones. Tectonic plates can include both continental and oceanic areas. Major plates are African Plate, Antarctic Plate, Indian Australian Plate, Eurasian Plate, American Plate, and Pacific Plate. Minor plates include the Arabian Plate, ...
Chapter 8: Major Elements
... Divergent boundary Where on Earth is continental rifting occurring today? ...
... Divergent boundary Where on Earth is continental rifting occurring today? ...
Milky Way Plate Boundary Simulation
... Where an oceanic plate collides with a continental plate, the oceanic plate tips down and slides beneath the continental plate forming a deep ocean trench (a long, narrow, deep basin). An example of this type of movement, called subduction, caused the big earthquake, nuclear plant disaster, and deva ...
... Where an oceanic plate collides with a continental plate, the oceanic plate tips down and slides beneath the continental plate forming a deep ocean trench (a long, narrow, deep basin). An example of this type of movement, called subduction, caused the big earthquake, nuclear plant disaster, and deva ...
MS1_PNT_Geologyppt_V01
... Caused when 2 plates collide and one plate is pushed under the other one and pulls the sea bottom with it. The deepest trench is the Marianas trench with a depth of 11,022 meters, or almost 7 ...
... Caused when 2 plates collide and one plate is pushed under the other one and pulls the sea bottom with it. The deepest trench is the Marianas trench with a depth of 11,022 meters, or almost 7 ...
The following reading should be annotated by each student as they
... When Alfred Wegener first proposed the idea of continental drift, it didn’t quite explain the full story. While he correctly showed that Africa and South America fitted together, his model wasn’t able to explain the violent forces that occur around the Earth’s crust. It wasn’t until the 1960s that a ...
... When Alfred Wegener first proposed the idea of continental drift, it didn’t quite explain the full story. While he correctly showed that Africa and South America fitted together, his model wasn’t able to explain the violent forces that occur around the Earth’s crust. It wasn’t until the 1960s that a ...
2017Geological Oceanography
... • At a colliding or convergent boundary, two plates push together. – Movements along these destroy or recycle crust. ...
... • At a colliding or convergent boundary, two plates push together. – Movements along these destroy or recycle crust. ...
Dynamic Planet Review
... •Ocean plate is subducted below continent. •A trench forms above the subduction zone in water •A volcanic mountain chain forms on land ...
... •Ocean plate is subducted below continent. •A trench forms above the subduction zone in water •A volcanic mountain chain forms on land ...
Geological Components of the ocean
... In the 1960's the unifying theory of plate tectonics was proposed ...
... In the 1960's the unifying theory of plate tectonics was proposed ...
revised_midterm_guide
... a cross-section through a mid-ocean ridge with a magma chamber transform boundaries offsetting a mid-ocean ridge as seen from above a cross-section through each of the 2 different types of subduction zones (include igneous features, like upwelling magma and volcanoes) a cross-section of the ...
... a cross-section through a mid-ocean ridge with a magma chamber transform boundaries offsetting a mid-ocean ridge as seen from above a cross-section through each of the 2 different types of subduction zones (include igneous features, like upwelling magma and volcanoes) a cross-section of the ...
Mountain Belts formed at Divergent and Convergent Boundaries
... Mid Ocean Ridges • Continuous underwater mountain chains that extend up to 60,000 km around the globe. • Generally around 1500km wide and have peaks around 3km high. • Site of most volcanism on earth ...
... Mid Ocean Ridges • Continuous underwater mountain chains that extend up to 60,000 km around the globe. • Generally around 1500km wide and have peaks around 3km high. • Site of most volcanism on earth ...
Plate Tectonics Unit Test
... 27. Make a chart listing the 3 types of seismic waves, how each wave moves, and what states of matter they can move through. Seismic Wave P-wave S-wave ...
... 27. Make a chart listing the 3 types of seismic waves, how each wave moves, and what states of matter they can move through. Seismic Wave P-wave S-wave ...
1. Mantle convection causes tectonic plate motion and is
... another at a subduction zone? Slab pull occurs at subduction zones, where denser plate sinks beneath the less dense plate. The leading edge of the sinking plate continues to pull the rest of the plate down with it. 2. Plate tectonic forces are responsible for the slow movement of continents over geo ...
... another at a subduction zone? Slab pull occurs at subduction zones, where denser plate sinks beneath the less dense plate. The leading edge of the sinking plate continues to pull the rest of the plate down with it. 2. Plate tectonic forces are responsible for the slow movement of continents over geo ...
Slab pull occurs at subduction zones, where denser plate sinks
... another at a subduction zone? Slab pull occurs at subduction zones, where denser plate sinks beneath the less dense plate. The leading edge of the sinking plate continues to pull the rest of the plate down with it. 2. Plate tectonic forces are responsible for the slow movement of continents over geo ...
... another at a subduction zone? Slab pull occurs at subduction zones, where denser plate sinks beneath the less dense plate. The leading edge of the sinking plate continues to pull the rest of the plate down with it. 2. Plate tectonic forces are responsible for the slow movement of continents over geo ...
Tectonic Plates - Reading packet
... The Plate Tectonics Theory The theory of plate tectonics originated in the 1960s. It describes how moving, crustal plates cover Earth’s surface. Seafloor spreading showed that Earth’s crust moves sideways. Scientists wanted to understand the motion of all Earth’s plates. Plates are made of a rigid ...
... The Plate Tectonics Theory The theory of plate tectonics originated in the 1960s. It describes how moving, crustal plates cover Earth’s surface. Seafloor spreading showed that Earth’s crust moves sideways. Scientists wanted to understand the motion of all Earth’s plates. Plates are made of a rigid ...
Plate Tectonics Notes plate_boundaries
... Island arcs are created (a pattern of volcanic islands created from a subduction zone that is located off the coast) ...
... Island arcs are created (a pattern of volcanic islands created from a subduction zone that is located off the coast) ...
Name: Date: General Review Study Guide According to Wegener`s
... Low-mass and medium-mass stars become white dwarfs when they run out of fuel. According to the theory of plate tectonics, the lithosphere is made up of a number of plates that contain oceanic and continental crust. These plates are in constant slow motion, driven by convection currents in the mantle ...
... Low-mass and medium-mass stars become white dwarfs when they run out of fuel. According to the theory of plate tectonics, the lithosphere is made up of a number of plates that contain oceanic and continental crust. These plates are in constant slow motion, driven by convection currents in the mantle ...
Unit 3 Lesson 1 Geological History
... continents were moving through the earth's crust, like icebreakers plowing through ice sheets, and that centrifugal and tidal forces were responsible for moving the continents. Wegener overestimated the rate of continental movement. He suggested that North America and Europe were moving apart at ove ...
... continents were moving through the earth's crust, like icebreakers plowing through ice sheets, and that centrifugal and tidal forces were responsible for moving the continents. Wegener overestimated the rate of continental movement. He suggested that North America and Europe were moving apart at ove ...
Section 1 - Pelham City Schools
... • Consists of densest elements • Radius approximately 3400 km ...
... • Consists of densest elements • Radius approximately 3400 km ...
Earth`s Interior Information- Core-Innermost layer Inner Core
... Asthenosphere-Not liquid, but there is melted rock, carries the lithosphere, moves slowly Lithosphere-broken into giant plates that fit around the globe like puzzle pieces. The pieces move a little bit each year. They slide on a somewhat liquid asthenosphere Crust-Layer of rock that forms Earth’s ou ...
... Asthenosphere-Not liquid, but there is melted rock, carries the lithosphere, moves slowly Lithosphere-broken into giant plates that fit around the globe like puzzle pieces. The pieces move a little bit each year. They slide on a somewhat liquid asthenosphere Crust-Layer of rock that forms Earth’s ou ...
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.