Chapter 3 Test Review
... 17. The acidity or basicity of a solution is described by the ____________________ scale. (71) 18. An ___________________ is the negatively charged part of an atom. (65) 19. As the asthenosphere moves, it drags along large plates of crust called ____________________ plates. (77) 20. In _____________ ...
... 17. The acidity or basicity of a solution is described by the ____________________ scale. (71) 18. An ___________________ is the negatively charged part of an atom. (65) 19. As the asthenosphere moves, it drags along large plates of crust called ____________________ plates. (77) 20. In _____________ ...
Rocks & Landforms
... Earth Movements and Resultant Landforms 3 forms of plate movements & boundaries 1. Divergent plate movement at constructive plate boundary: When plates move apart, hot molten materials wells up from Earth's interior to form a new ocean floor with mid-oceanic ridges. Eg : the Mid Atlantic oceani ...
... Earth Movements and Resultant Landforms 3 forms of plate movements & boundaries 1. Divergent plate movement at constructive plate boundary: When plates move apart, hot molten materials wells up from Earth's interior to form a new ocean floor with mid-oceanic ridges. Eg : the Mid Atlantic oceani ...
Marine Geophysics
... Possible modes of behavior of oceanic lithosphere at convergent plate boundaries: ...
... Possible modes of behavior of oceanic lithosphere at convergent plate boundaries: ...
The Earth as a System - Warren County Schools
... most of it frozen in glaciers and some is below the surface in ground water. – Much of this water has to be pumped to the surface and rest that lies in the lakes also has to be pumped from its location. – Water moves throughout earth through the water cycle. This movement helps move nutrients throug ...
... most of it frozen in glaciers and some is below the surface in ground water. – Much of this water has to be pumped to the surface and rest that lies in the lakes also has to be pumped from its location. – Water moves throughout earth through the water cycle. This movement helps move nutrients throug ...
Mantle & Crust
... • Sampled by xenoliths, occasionally exposed by crustal deformation – Peridotite – Eclogite ...
... • Sampled by xenoliths, occasionally exposed by crustal deformation – Peridotite – Eclogite ...
Twentieth lecture - 23 October, 2013
... Very active - initially molten, then skinned over with a thin surface layer, continually broken by volcanic activity. ...
... Very active - initially molten, then skinned over with a thin surface layer, continually broken by volcanic activity. ...
Issues in our Fast Changing World: Earthquakes
... is happening along the mid-Atlantic ridge between the UK and America too. Small chains of islands are created in some places as new crust is created it builds into a small volcano that sometimes breaks the surface of the water. ...
... is happening along the mid-Atlantic ridge between the UK and America too. Small chains of islands are created in some places as new crust is created it builds into a small volcano that sometimes breaks the surface of the water. ...
Notebook #3 Lithospheric Plates gt
... * There is scientific data supporting abundant volcanism occurrences at divergent and convergent plate boundaries and a lack of volcanism associated with transform plate boundaries. ...
... * There is scientific data supporting abundant volcanism occurrences at divergent and convergent plate boundaries and a lack of volcanism associated with transform plate boundaries. ...
A. Layers of the Earth
... The map illustrates the thickness of Earth's crust. Note how the thickest areas (red and dark brown) are beneath some of Earth's important mountain ranges such as: Andes (west side of South America), Rockies (Western North America), Himalayas (north of India in South-central Asia) and Urals (north- ...
... The map illustrates the thickness of Earth's crust. Note how the thickest areas (red and dark brown) are beneath some of Earth's important mountain ranges such as: Andes (west side of South America), Rockies (Western North America), Himalayas (north of India in South-central Asia) and Urals (north- ...
The Moving Crust
... the source of an earthquake The source of an earthquake deep in the crust is called the focus The location directly above the focus is called the epicenter of an earthquake Aftershocks are actually ...
... the source of an earthquake The source of an earthquake deep in the crust is called the focus The location directly above the focus is called the epicenter of an earthquake Aftershocks are actually ...
Length scales of mantle heterogeneities from seismological
... Contour line spacing is every 20 deg in epicentral distance ...
... Contour line spacing is every 20 deg in epicentral distance ...
Structure of Earth Student Notes
... Continental crust forms the ________________ and consists mostly of ____________ a less dense igneous rock with larger ____________ that is usually _________in color. ...
... Continental crust forms the ________________ and consists mostly of ____________ a less dense igneous rock with larger ____________ that is usually _________in color. ...
The Earth February 7 − Why does Earth support life?
... •Plates bash together in subduction zones. • e.g. “Rim of Fire” around Pacific Ocean. • Plates can slide at the boundaries • San Andreas Fault in California ...
... •Plates bash together in subduction zones. • e.g. “Rim of Fire” around Pacific Ocean. • Plates can slide at the boundaries • San Andreas Fault in California ...
Ocean crust
... Thingvellir National Park, in southwestern Iceland, is one of the few spots in the world where an underwater ridge rises above the water surface. Iceland is one of the most geologically active places on Earth with more than 15 volcanoes that have erupted in the last century. ...
... Thingvellir National Park, in southwestern Iceland, is one of the few spots in the world where an underwater ridge rises above the water surface. Iceland is one of the most geologically active places on Earth with more than 15 volcanoes that have erupted in the last century. ...
tectonics assessment - Lehigh`s Environmental Initiative
... B. at mid-ocean ridges C. at the San Andreas fault D. at the edge of an ocean basin 5. Which of the following describes a reasonable movement of Earth’s plates? A. The plates do not move. B. The plates move 1 - 10 centimeters (0.4 - 4 inches) per year. C. The plates move 1 - 10 meters (3 - 30 feet) ...
... B. at mid-ocean ridges C. at the San Andreas fault D. at the edge of an ocean basin 5. Which of the following describes a reasonable movement of Earth’s plates? A. The plates do not move. B. The plates move 1 - 10 centimeters (0.4 - 4 inches) per year. C. The plates move 1 - 10 meters (3 - 30 feet) ...
test - Scioly.org
... 31. In 1963, J. Tuzo Wilson first proposed that volcanic chains like the Hawaiian Islands form when a tectonic plate drifts over a “hot spot” in the mantle. Eight years later, Princeton geophysicist W. Jason Morgan suggested that ...
... 31. In 1963, J. Tuzo Wilson first proposed that volcanic chains like the Hawaiian Islands form when a tectonic plate drifts over a “hot spot” in the mantle. Eight years later, Princeton geophysicist W. Jason Morgan suggested that ...
Document
... about the depths of the world’s oceans? HMS Challenger, 1872 throughout a 4year voyage, used rope lines to estimate ocean depths. Today we use echo sounders, devices that emit a pinging sound and record its return later in time. Knowing the speed of sound and the time of flight of these echoes can b ...
... about the depths of the world’s oceans? HMS Challenger, 1872 throughout a 4year voyage, used rope lines to estimate ocean depths. Today we use echo sounders, devices that emit a pinging sound and record its return later in time. Knowing the speed of sound and the time of flight of these echoes can b ...
ch20_Oceans_online_notes
... about the depths of the world’s oceans? HMS Challenger, 1872 throughout a 4year voyage, used rope lines to estimate ocean depths. Today we use echo sounders, devices that emit a pinging sound and record its return later in time. Knowing the speed of sound and the time of flight of these echoes can b ...
... about the depths of the world’s oceans? HMS Challenger, 1872 throughout a 4year voyage, used rope lines to estimate ocean depths. Today we use echo sounders, devices that emit a pinging sound and record its return later in time. Knowing the speed of sound and the time of flight of these echoes can b ...
Science Framework
... Sediment often has bones, shells and plant material mixed in with it. As it is compressed (squeezed) into sedimentary rock, these extra things become fossilized, meaning they turn to rock themselves. As the earths crust changes, these fossils are uncovered. We can study the fossils and find out thin ...
... Sediment often has bones, shells and plant material mixed in with it. As it is compressed (squeezed) into sedimentary rock, these extra things become fossilized, meaning they turn to rock themselves. As the earths crust changes, these fossils are uncovered. We can study the fossils and find out thin ...
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.