mid-ocean ridge
... lithosphere is broken into large pieces called plates that are separated by cracks. Below the lithosphere, the material is hotter and under increasing pressure. As a result, the part of the mantle just beneath the lithosphere is less rigid than the rock above, although it is still solid. This softer ...
... lithosphere is broken into large pieces called plates that are separated by cracks. Below the lithosphere, the material is hotter and under increasing pressure. As a result, the part of the mantle just beneath the lithosphere is less rigid than the rock above, although it is still solid. This softer ...
Plate Tectonics
... magnetic anomaly patterns on oceanic crust as a result of repeated reversals of the Earth´s magnetic field. This concept is part of the plate tectonic theory which describes the dynamic formation of new oceanic crust at mid-oceanic ridges, the subduction and destruction of oceanic crust at convergen ...
... magnetic anomaly patterns on oceanic crust as a result of repeated reversals of the Earth´s magnetic field. This concept is part of the plate tectonic theory which describes the dynamic formation of new oceanic crust at mid-oceanic ridges, the subduction and destruction of oceanic crust at convergen ...
Slide 1
... *example: Mid-Atlantic Ridge – North American plate & Eurasian & African plates pulling apart ...
... *example: Mid-Atlantic Ridge – North American plate & Eurasian & African plates pulling apart ...
Sort out the cards to create a square by matching processes of the
... move and describe some evidence for this. • Skill: • Problem solving and fact-finding! ...
... move and describe some evidence for this. • Skill: • Problem solving and fact-finding! ...
File
... diagram 1968 - scientists had developed a new theory that combines the main ideas of continental drift and seafloor spreading Earth’s plates are composed of the crust and part of the upper mantle The less dense plates of the lithosphere “float” on the denser asthenosphere Earth’s plates can ...
... diagram 1968 - scientists had developed a new theory that combines the main ideas of continental drift and seafloor spreading Earth’s plates are composed of the crust and part of the upper mantle The less dense plates of the lithosphere “float” on the denser asthenosphere Earth’s plates can ...
Plate Tectonics
... oceanic crust vis-à-vis oceanic crust oceanic crust vis-à-vis continental crust continental crust vis-à-vis continental crust ...
... oceanic crust vis-à-vis oceanic crust oceanic crust vis-à-vis continental crust continental crust vis-à-vis continental crust ...
3 Types Of Plate Boundaries And What They Create
... Strike-slip fault…. Earthquakes happen here ...
... Strike-slip fault…. Earthquakes happen here ...
Causes of Plate Movement
... After completing this section, the student will relate convection currents in the asthenosphere to plate movement (Standard PI – 042) and use evidence to support the Theory of Continental Drift (Standard PI-040) ...
... After completing this section, the student will relate convection currents in the asthenosphere to plate movement (Standard PI – 042) and use evidence to support the Theory of Continental Drift (Standard PI-040) ...
Plate tectonics web quest Alfred Wegner noticed that Greenland had
... is generated as the plates pull away from each other. Convergent boundaries are where crust is destroyed as one plate dives under another. Transform boundaries are where crust is neither produced nor destroyed as the plates slide horizontally past each other. Plate boundary zones as in broad belts i ...
... is generated as the plates pull away from each other. Convergent boundaries are where crust is destroyed as one plate dives under another. Transform boundaries are where crust is neither produced nor destroyed as the plates slide horizontally past each other. Plate boundary zones as in broad belts i ...
Ch 10 - USD305.com
... • Shields-rocks w/in cratons that have been exposed at Earth’s surface • Rifting-process by which Earth’s crust breaks apart – Oceanic or continental – Forms in zone of weakness and continent breaks apart – East African Rift ...
... • Shields-rocks w/in cratons that have been exposed at Earth’s surface • Rifting-process by which Earth’s crust breaks apart – Oceanic or continental – Forms in zone of weakness and continent breaks apart – East African Rift ...
Tectonic Plate Boundaries
... The Crust is recycled and causes volcanic activity. Subduction zones are normally located at deep ocean trenches. ...
... The Crust is recycled and causes volcanic activity. Subduction zones are normally located at deep ocean trenches. ...
Chapter 2 Section 2
... -Next to outer core is a thick Layer of hot dense rock called the MANTLE. -Crust = rocky shell from 2miles through 75 miles thick. ...
... -Next to outer core is a thick Layer of hot dense rock called the MANTLE. -Crust = rocky shell from 2miles through 75 miles thick. ...
Plate Tectonics Study Guide – Key
... Pacific Coast of the United States? What landform is formed on top of a mantle plume hot spot? Which is more dense: old oceanic crust or young oceanic crust? Why? What are the two types of crust? What is an island arc and how is it related to plate tectonics? What is the place where two plates slip ...
... Pacific Coast of the United States? What landform is formed on top of a mantle plume hot spot? Which is more dense: old oceanic crust or young oceanic crust? Why? What are the two types of crust? What is an island arc and how is it related to plate tectonics? What is the place where two plates slip ...
File - Leaving Certificate Geography
... continental lithosphere Oceanic lithosphere heats and dehydrates as it subsides The melt rises forming volcanism E.g. The Andes ...
... continental lithosphere Oceanic lithosphere heats and dehydrates as it subsides The melt rises forming volcanism E.g. The Andes ...
Study Guide 10
... d. Tectonic plates e. Lithosphere f. Asthenosphere g. Subduction h. Convection i. ...
... d. Tectonic plates e. Lithosphere f. Asthenosphere g. Subduction h. Convection i. ...
Plate Tectonics Review Key
... b. result: faulting and shallow focus earthquakes 19. Describe colliding plate boundaries terms of a. movement: two continental lithospheric plates come together b. result: folded mountains 20. Match the following with the correct type of plate boundaries. a. San Andreas Fault i. colliding b. East P ...
... b. result: faulting and shallow focus earthquakes 19. Describe colliding plate boundaries terms of a. movement: two continental lithospheric plates come together b. result: folded mountains 20. Match the following with the correct type of plate boundaries. a. San Andreas Fault i. colliding b. East P ...
Hemingway Name: 12.1 Evidence for Continental Drift * PANGEA
... ________________ began on one continent, end on the coastline and then appear to continue on a continent across the ocean ...
... ________________ began on one continent, end on the coastline and then appear to continue on a continent across the ocean ...
EP-Y10-mod
... plates that slowly move around the globe • Plates are made of crust and upper mantle (lithosphere) • There are 2 types of plate • There are 4 types of plate boundaries • Volcanoes and Earthquakes are closely linked to the margins of the tectonic plates ...
... plates that slowly move around the globe • Plates are made of crust and upper mantle (lithosphere) • There are 2 types of plate • There are 4 types of plate boundaries • Volcanoes and Earthquakes are closely linked to the margins of the tectonic plates ...
Plate tectonics note-taker - Tanque Verde Unified School District
... A. SUBDUCTION occurs when an oceanic plate (denser) is forced ______________ a continental (lighter) plate. 1. At the subduction zone a ________________________________ is formed where the plate is being forced downwards under the continental plate. 2. Subduction causes rocks to _____________, and m ...
... A. SUBDUCTION occurs when an oceanic plate (denser) is forced ______________ a continental (lighter) plate. 1. At the subduction zone a ________________________________ is formed where the plate is being forced downwards under the continental plate. 2. Subduction causes rocks to _____________, and m ...
Snack-Tectonics Lab
... Make category headings for each section in bold and then use full sentences to answer each question. Purpose: What is the purpose of this lab? Background Information: Write 1-3 paragraphs about plate boundaries. You may use any source (internet, textbook book, etc.) but it MUST BE IN YOUR OWN WORDS! ...
... Make category headings for each section in bold and then use full sentences to answer each question. Purpose: What is the purpose of this lab? Background Information: Write 1-3 paragraphs about plate boundaries. You may use any source (internet, textbook book, etc.) but it MUST BE IN YOUR OWN WORDS! ...
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.