Divergent Plates - Earthquake Explorers
... 7. Describe how the height of the crust changes as you move away from the plate boundary. ______________________________________________________________ 8. What happens to the density of the molten rock that is pushing up between the plates as it cools? ______________________________________________ ...
... 7. Describe how the height of the crust changes as you move away from the plate boundary. ______________________________________________________________ 8. What happens to the density of the molten rock that is pushing up between the plates as it cools? ______________________________________________ ...
6.E.2.2 Plate Tectonics, Earthquakes and Volcanoes
... volcanoes keep erupting, and new mountains keep forming. Why is this ...
... volcanoes keep erupting, and new mountains keep forming. Why is this ...
Notebook #4 Earths layers gt
... * Scientists have been able to identify the composition of inner and outer core based on the movement of seismic waves through the Earth's layers * Scientists have been able to identify the composition of the mantle based on the movement of seismic waves through the earth's layers as well as materia ...
... * Scientists have been able to identify the composition of inner and outer core based on the movement of seismic waves through the Earth's layers * Scientists have been able to identify the composition of the mantle based on the movement of seismic waves through the earth's layers as well as materia ...
Transform Boundaries Quiz - cK-12
... a) Pacific Plate and Juan de Fuca b) Juan de Fuca and North American Plate c) Pacific Plate and North American Plate d) Juan de Fuca and Eurasian Plate ...
... a) Pacific Plate and Juan de Fuca b) Juan de Fuca and North American Plate c) Pacific Plate and North American Plate d) Juan de Fuca and Eurasian Plate ...
Plate Tectonics
... with hot, molten lava that solidifies when it reaches the surface (meeting either the sea or air). Land is therefore formed. Earthquakes and volcanoes are associated with constructive plate margins. ...
... with hot, molten lava that solidifies when it reaches the surface (meeting either the sea or air). Land is therefore formed. Earthquakes and volcanoes are associated with constructive plate margins. ...
Chapter 10 Worksheet
... i. A broad area of continental crust that has been thinned and overlain by marine sediments. j. Formed by bending down of a slab as it enters a subduction zone. ...
... i. A broad area of continental crust that has been thinned and overlain by marine sediments. j. Formed by bending down of a slab as it enters a subduction zone. ...
Layers.of.Earth.part.1
... – Rocky, mostly silicates – Two types Oceanic (most of the crust) – made of mafic rocks – mostly basalt Continental – made of felsic rocks (feldspars and light colored minerals)– mostly granite ...
... – Rocky, mostly silicates – Two types Oceanic (most of the crust) – made of mafic rocks – mostly basalt Continental – made of felsic rocks (feldspars and light colored minerals)– mostly granite ...
Activity EarthBeneath 150209
... For the questions below, please use the years on the Timeline Handout that correspond to the time periods listed on the key to the Geologic Map. For example on the Geologic Map, the light blue color by A in the Pacific or Atlantic Ocean is Pliocene (shown on the Ocean Geology Key). Then look up Plio ...
... For the questions below, please use the years on the Timeline Handout that correspond to the time periods listed on the key to the Geologic Map. For example on the Geologic Map, the light blue color by A in the Pacific or Atlantic Ocean is Pliocene (shown on the Ocean Geology Key). Then look up Plio ...
Key Words: Plate Tectonics, Structural Geology, Orogenesis
... Key Words: Plate Tectonics, Structural Geology, Orogenesis, Convergent Margin Orogens, Oroclines, Paleomagnetism. As a structural geologist / tectonist, I attempt to understand and elucidate the processes that shape mountain belts, and to define the role of mountains in the evolution of the earth’s ...
... Key Words: Plate Tectonics, Structural Geology, Orogenesis, Convergent Margin Orogens, Oroclines, Paleomagnetism. As a structural geologist / tectonist, I attempt to understand and elucidate the processes that shape mountain belts, and to define the role of mountains in the evolution of the earth’s ...
plate tectonics - Math/Science Nucleus
... indicate that the plates move. Many lines of evidence indicate that the plates are moving. What is less clear, however, is why the plates move. There are two main scientific ideas for explaining plate movement: gravity and convection currents. All objects on and in the Earth are pulled towards its c ...
... indicate that the plates move. Many lines of evidence indicate that the plates are moving. What is less clear, however, is why the plates move. There are two main scientific ideas for explaining plate movement: gravity and convection currents. All objects on and in the Earth are pulled towards its c ...
When the Earth Moves: Seafloor Spreading and Plate Tectonics
... plate tectonics describes the surface of Earth as being divided into huge plates whose slow movements carry the continents on a slow drift around the globe. Where the plates come in contact with one another, they may cause catastrophic events, such as volcanic eruptions and earthquakes, which in tur ...
... plate tectonics describes the surface of Earth as being divided into huge plates whose slow movements carry the continents on a slow drift around the globe. Where the plates come in contact with one another, they may cause catastrophic events, such as volcanic eruptions and earthquakes, which in tur ...
Happy Lesson
... • [A] They can collide. (correct answer) • [B] They can move apart. (correct answer) • [C] They can slide past each other. (correct answer) • [D] They can combine to form one plate ...
... • [A] They can collide. (correct answer) • [B] They can move apart. (correct answer) • [C] They can slide past each other. (correct answer) • [D] They can combine to form one plate ...
Steven Taylor Eportfolio Volcanoes Part II Askja Volcano in Iceland
... This is on a continental divergence boundary, the plates are spreading apart. Since the plates are spreading apart, it is creating a place for the hot magma to go. Since the magma is so hot, it will rise up with this opening. ...
... This is on a continental divergence boundary, the plates are spreading apart. Since the plates are spreading apart, it is creating a place for the hot magma to go. Since the magma is so hot, it will rise up with this opening. ...
Plate Tectonics OmniGlobe Lesson Plan Grade / Class / Subject
... Many of the objects scientist study, like planets or atoms, are too big or too small to work with by hand. Too sole this problem, scientists build scale model, like shrinking a planet down to the size of a basketball or blowing an atom up to the size of a baseball. Scale models make objects easier f ...
... Many of the objects scientist study, like planets or atoms, are too big or too small to work with by hand. Too sole this problem, scientists build scale model, like shrinking a planet down to the size of a basketball or blowing an atom up to the size of a baseball. Scale models make objects easier f ...
Earth`s Structure Worksheet
... made of hot semi rock is located directly below the ________ and is about 1800 miles thick. Lithosphere – made up of the crust and tiny bit of the mantle, this layer is divided into several constantly (very slowly) moving plates of ___________ ________ that hold the continents and oceans Asthenosphe ...
... made of hot semi rock is located directly below the ________ and is about 1800 miles thick. Lithosphere – made up of the crust and tiny bit of the mantle, this layer is divided into several constantly (very slowly) moving plates of ___________ ________ that hold the continents and oceans Asthenosphe ...
Gondwana - The Great Supercontinent
... The Earth’s surface does not consist of a motionless crust but rather of large crustal plates which move and jostle against each other. There are seven large plates and many smaller plates (100 to 150 km thick) that drift around the Earth’s surface, highlighted in the diagram below. ...
... The Earth’s surface does not consist of a motionless crust but rather of large crustal plates which move and jostle against each other. There are seven large plates and many smaller plates (100 to 150 km thick) that drift around the Earth’s surface, highlighted in the diagram below. ...
Volcanoes and Plate Tectonics
... A volcano is a weak spot in the crust where molten material, or magma, comes to the surface. Magma is a molten mixture of rock-forming substances, gases, and water from the mantle. When magma reaches the surface, it is called lava. When lava has cooled, it forms solid rock. Lava released during volc ...
... A volcano is a weak spot in the crust where molten material, or magma, comes to the surface. Magma is a molten mixture of rock-forming substances, gases, and water from the mantle. When magma reaches the surface, it is called lava. When lava has cooled, it forms solid rock. Lava released during volc ...
PPT - Hss-1.us
... continental drift from the first half of the 20th century and the concept of seafloor spreading developed during the 1960s. The plate tectonic theory states that the lithosphere is broken up into what are called tectonic plates. The lithospheric tectonic plates ride or float on the asthenosphere. In ...
... continental drift from the first half of the 20th century and the concept of seafloor spreading developed during the 1960s. The plate tectonic theory states that the lithosphere is broken up into what are called tectonic plates. The lithospheric tectonic plates ride or float on the asthenosphere. In ...
WASL Review Homework #3
... 14. Discuss the convection currents inside of the earth and explain how they change the shape of the land. Describe how thermal energy and convection currents underground can cause earthquakes and volcanoes. Draw a labeled diagram showing how convection in the upper mantle drives the movement of th ...
... 14. Discuss the convection currents inside of the earth and explain how they change the shape of the land. Describe how thermal energy and convection currents underground can cause earthquakes and volcanoes. Draw a labeled diagram showing how convection in the upper mantle drives the movement of th ...
Test - Scioly.org
... Dynamic Planet – Test Written by: Araneesh Pratap (Chattahoochee High School) ...
... Dynamic Planet – Test Written by: Araneesh Pratap (Chattahoochee High School) ...
Test - Scioly.org
... Dynamic Planet – Test Written by: Araneesh Pratap (Chattahoochee High School) ...
... Dynamic Planet – Test Written by: Araneesh Pratap (Chattahoochee High School) ...
The Sea Floor – Chapter 2
... rises to the surface from the aesthenosphere below • This new crust is very hot and so less dense than older oceanic (basaltic) crust; as a result it rises high as a ridge system in the center of our oceans ...
... rises to the surface from the aesthenosphere below • This new crust is very hot and so less dense than older oceanic (basaltic) crust; as a result it rises high as a ridge system in the center of our oceans ...
Evidence for Plate Tectonics
... • Ocean-floor spreading: process in which old ocean floor is pushed away from a mid-ocean ridge by the formation of new ocean floor • Trenches: V-shaped valley on the ocean floor where old ocean floor is subducted; a convergent plate boundary ...
... • Ocean-floor spreading: process in which old ocean floor is pushed away from a mid-ocean ridge by the formation of new ocean floor • Trenches: V-shaped valley on the ocean floor where old ocean floor is subducted; a convergent plate boundary ...
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.