Data Do Not Speak - The Story Behind The Science
... formed due to the movement of a plate over a stationary 'hotspot' in the mantle. This explained an apparent contradiction in the plate tectonic theory that some volcanoes occur thousands of miles from a plate boundary. This idea was not accepted at first and Hess's paper presenting it was rejected b ...
... formed due to the movement of a plate over a stationary 'hotspot' in the mantle. This explained an apparent contradiction in the plate tectonic theory that some volcanoes occur thousands of miles from a plate boundary. This idea was not accepted at first and Hess's paper presenting it was rejected b ...
Dynamic Earth
... • Driven by convection currents in mantle caused by Density Differences: heat from Earth’s interior causes hot, less dense magma to rise and cool, more dense magma to sink ...
... • Driven by convection currents in mantle caused by Density Differences: heat from Earth’s interior causes hot, less dense magma to rise and cool, more dense magma to sink ...
Earth`s Interior
... (2) he postulated the existence of a core that transmits seismic waves at a slower rate than shallower depths (3) only very weak p-waves between 103-143 degrees from an earthquake focus: P-wave shadow zone ii. Inge Lehman (1936) (1) postulated that the Earth has a solid inner core (2) explains the e ...
... (2) he postulated the existence of a core that transmits seismic waves at a slower rate than shallower depths (3) only very weak p-waves between 103-143 degrees from an earthquake focus: P-wave shadow zone ii. Inge Lehman (1936) (1) postulated that the Earth has a solid inner core (2) explains the e ...
VOLCANIC FEATURES OF THE CENTRAL ATLANTIC OCEAN
... super-continents. Sub-lithospheric alkaline magmas collected during this event and moved rapidly to the surface along extensional fracture zones and fracture intersections, in the oceans as well as in adjacent continents within the same plates. The few linear seamount chains in the central Atlantic ...
... super-continents. Sub-lithospheric alkaline magmas collected during this event and moved rapidly to the surface along extensional fracture zones and fracture intersections, in the oceans as well as in adjacent continents within the same plates. The few linear seamount chains in the central Atlantic ...
File
... Uppermost part is sold Outermost portion of mantle and crust form the lithosphere – Mantle layer just under lithosphere is the ...
... Uppermost part is sold Outermost portion of mantle and crust form the lithosphere – Mantle layer just under lithosphere is the ...
plate boundaries - Ms. George`s Science Class
... understand because they are where geological phenomena such as earthquakes, volcanoes, and tsunamis occur. There are 3 main types of boundaries: 1. Divergent 2. Convergent 3. Transform (transform-fault) ...
... understand because they are where geological phenomena such as earthquakes, volcanoes, and tsunamis occur. There are 3 main types of boundaries: 1. Divergent 2. Convergent 3. Transform (transform-fault) ...
Geology of the Hawaiian Islands
... Magma formed at spreading centers contains minute pieces of iron that become aligned in the direction of the Earth’s magnetic field. ...
... Magma formed at spreading centers contains minute pieces of iron that become aligned in the direction of the Earth’s magnetic field. ...
Objectives 6 E Review- TEST FRIDAY, JANUARY 4th Part A: Read
... Identify one geologic event that often occures near this type of crustal plate boundary. What theory is used to explain the movement of crustal ...
... Identify one geologic event that often occures near this type of crustal plate boundary. What theory is used to explain the movement of crustal ...
Plate Tectonics
... – Produced by extensional forces acting on the lithospheric plates – Not all rift valleys develop into full-fledged spreading centers ...
... – Produced by extensional forces acting on the lithospheric plates – Not all rift valleys develop into full-fledged spreading centers ...
In geologic terms, a plate is a large, rigid slab of solid rock
... volcanically active continental areas, such as, the Western United States. Averaging at least 80 km (50 miles) in thickness over much of the Earth the lithosphere has been broken up into the moving plates that contain the world's continents and oceans. Scientists believe that below the lithosphere i ...
... volcanically active continental areas, such as, the Western United States. Averaging at least 80 km (50 miles) in thickness over much of the Earth the lithosphere has been broken up into the moving plates that contain the world's continents and oceans. Scientists believe that below the lithosphere i ...
PlatemarginsL3and4 9.74MB 2017-03-29 12:41:32
... filled with basaltic lava upwelling from below. • Constructive margins are some of the youngest parts of the Earth’s surface, where new crust is continuously being created. ...
... filled with basaltic lava upwelling from below. • Constructive margins are some of the youngest parts of the Earth’s surface, where new crust is continuously being created. ...
Earthforce in the Crust
... to form. Scientists think that, long ago, the crustal plate of India collided with the huge crustal plate of Asia to form the Himalayas, the highest mountains in the world. While crustal rock is solid, it does have some elastic properties. With enough force and heat, rock can bend and change shape. ...
... to form. Scientists think that, long ago, the crustal plate of India collided with the huge crustal plate of Asia to form the Himalayas, the highest mountains in the world. While crustal rock is solid, it does have some elastic properties. With enough force and heat, rock can bend and change shape. ...
Earth Science Plate Tectonics and How Oceans/Mountains Affect
... • Create breezes during the day and night that affect the climate of the shore • Ocean currents such as the Gulf Stream can make an area much Warmer than an area not near the ocean at the same latitude. (example: part of inner Canada and England—England’s climate is warmer due to the warm Gulf Strea ...
... • Create breezes during the day and night that affect the climate of the shore • Ocean currents such as the Gulf Stream can make an area much Warmer than an area not near the ocean at the same latitude. (example: part of inner Canada and England—England’s climate is warmer due to the warm Gulf Strea ...
Theory of Plate Tectonics
... formed. When two oceanic plates converge what is an island arc and a trench created? _____________________ The Appalachians formed mainly from continental plate collisions and therefore are a __________ folded mountain range. Convection currents The force moving the plates is ________________ ...
... formed. When two oceanic plates converge what is an island arc and a trench created? _____________________ The Appalachians formed mainly from continental plate collisions and therefore are a __________ folded mountain range. Convection currents The force moving the plates is ________________ ...
Inside Earth Ch. 2 Sec. 1 Notes
... *The movement of Earth's plates causes stress on the rocks Stress: A force that acts on rocks to change its shape or volume -Stress adds energy to rock -Energy is stored until rock changes shape or breaks 3 Types of Stress 1. Tension -Pulls on the crust stretching it so it is thinner in the middle - ...
... *The movement of Earth's plates causes stress on the rocks Stress: A force that acts on rocks to change its shape or volume -Stress adds energy to rock -Energy is stored until rock changes shape or breaks 3 Types of Stress 1. Tension -Pulls on the crust stretching it so it is thinner in the middle - ...
Theory of Plate Tectonics Directed Reading A
... _____ 2. The place where tectonic plates touch is known as the a. continental plate. c. magma zone. b. tectonic boundary. d. tectonic ridge. _____ 3. Which of the following is NOT a type of tectonic plate boundary? a. convergent boundary c. divergent boundary b. fault-block boundary d. transform bou ...
... _____ 2. The place where tectonic plates touch is known as the a. continental plate. c. magma zone. b. tectonic boundary. d. tectonic ridge. _____ 3. Which of the following is NOT a type of tectonic plate boundary? a. convergent boundary c. divergent boundary b. fault-block boundary d. transform bou ...
Document
... _____ 2. The place where tectonic plates touch is known as the a. continental plate. c. magma zone. b. tectonic boundary. d. tectonic ridge. _____ 3. Which of the following is NOT a type of tectonic plate boundary? a. convergent boundary c. divergent boundary b. fault-block boundary d. transform bou ...
... _____ 2. The place where tectonic plates touch is known as the a. continental plate. c. magma zone. b. tectonic boundary. d. tectonic ridge. _____ 3. Which of the following is NOT a type of tectonic plate boundary? a. convergent boundary c. divergent boundary b. fault-block boundary d. transform bou ...
Background Knowledge – Layers of the Earth 1. List the layers of the
... that causes a difference in the temperature and density of the material that makes a rising or sinking motion of the fluid. 3. True or False: Changes in the mantle material’s heat and density is causes convection currents. 4. How does a lava lamp represent convection currents in the mantle? The ligh ...
... that causes a difference in the temperature and density of the material that makes a rising or sinking motion of the fluid. 3. True or False: Changes in the mantle material’s heat and density is causes convection currents. 4. How does a lava lamp represent convection currents in the mantle? The ligh ...
plate tectonics
... 38. What volcano erupted in the Philippines in June of 1991? 39. Where are the Philippines? 40. What often happens when two continental plates collide? 41. Give two examples of this result. ...
... 38. What volcano erupted in the Philippines in June of 1991? 39. Where are the Philippines? 40. What often happens when two continental plates collide? 41. Give two examples of this result. ...
Chapter 28: The Changing Earth
... The movement of tectonic plates is related to the distribution of heat by convection currents in the mantle. ...
... The movement of tectonic plates is related to the distribution of heat by convection currents in the mantle. ...
Power Point Presentation
... Learning Objectives: Earth structure, Plate tectonics and Ocean floor Difference between oceanic and continental crust. Understand the processes that are continuously changing Earth’s surface as lithospheric plates move relative to one another. Identify the role of oceanic ridges, transform faults ...
... Learning Objectives: Earth structure, Plate tectonics and Ocean floor Difference between oceanic and continental crust. Understand the processes that are continuously changing Earth’s surface as lithospheric plates move relative to one another. Identify the role of oceanic ridges, transform faults ...
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.