Geology Assessment Study Guide
... ● Understand what happens when oceanic crust and continental crust collide. ...
... ● Understand what happens when oceanic crust and continental crust collide. ...
aka Subduction
... Plate Tectonics - theory stating that the Earth’s crust is made up of large, moving plates - the major force in geomorphology. ...
... Plate Tectonics - theory stating that the Earth’s crust is made up of large, moving plates - the major force in geomorphology. ...
The Earth`s Drifting Continents - Earth
... Theory of Continental Drift • Alfred Wegener suggested that the continents were once together and have since drifted apart. Was not accepted until 30 years later. ...
... Theory of Continental Drift • Alfred Wegener suggested that the continents were once together and have since drifted apart. Was not accepted until 30 years later. ...
Earths Layers
... means “stone” or “rock” Cool , rigid and connected to the crust Floats on the athenosphere (lower mantle), and slides around very slowly. The upper part of the lithosphere melts rocks, forming a substance called magma (remember this?). Broken into large and small slabs of rock called tectoni ...
... means “stone” or “rock” Cool , rigid and connected to the crust Floats on the athenosphere (lower mantle), and slides around very slowly. The upper part of the lithosphere melts rocks, forming a substance called magma (remember this?). Broken into large and small slabs of rock called tectoni ...
File
... 9. In addition to volcanoes, what also occurs frequently in the Pacific Ring of Fire? • earthquakes ...
... 9. In addition to volcanoes, what also occurs frequently in the Pacific Ring of Fire? • earthquakes ...
Unit 11 vocabulary
... 9) Divergent Boundary: Locations where plates are moving away from one another; occurs above rising convection currents and causes rifts, volcanoes and mid-ocean ridges ...
... 9) Divergent Boundary: Locations where plates are moving away from one another; occurs above rising convection currents and causes rifts, volcanoes and mid-ocean ridges ...
Abstract
... Richard O’Connell Harvard University Abstract: A recent analytic boundary layer model of convection with layered viscosity and tectonic plates has revealed the existence of multiple convective modes, with transitions and hysteresis. Modes include ‘classical’ plate tectonics, a sluggish plate mode an ...
... Richard O’Connell Harvard University Abstract: A recent analytic boundary layer model of convection with layered viscosity and tectonic plates has revealed the existence of multiple convective modes, with transitions and hysteresis. Modes include ‘classical’ plate tectonics, a sluggish plate mode an ...
Week 27 CCA Review
... limitations such as shape, color, size, etc. Earth’s lithosphere is broken into tectonic plates. The major tectonic plates are: the African plate, Antarctic plate, Eurasian plate, Indo-Australian plate, North American plate, South American plate, and Pacific plate. Scientists believe that the plates ...
... limitations such as shape, color, size, etc. Earth’s lithosphere is broken into tectonic plates. The major tectonic plates are: the African plate, Antarctic plate, Eurasian plate, Indo-Australian plate, North American plate, South American plate, and Pacific plate. Scientists believe that the plates ...
Continental Drift and Plate Tectonics
... Why is continental crust generally much older than the current oceanic crust? ...
... Why is continental crust generally much older than the current oceanic crust? ...
Name: 7th Grade Science Earth History Test Review Be able to
... -The difference between an object that is more dense than another. -How convection currents work and how they cause plates to move? -The three different plate boundaries and the processes they create that change the Earth’s surface. (Convergent, Divergent, and Transform). -Examples of weathering, er ...
... -The difference between an object that is more dense than another. -How convection currents work and how they cause plates to move? -The three different plate boundaries and the processes they create that change the Earth’s surface. (Convergent, Divergent, and Transform). -Examples of weathering, er ...
File
... LG # 8 Earthquakes, Volcanoes, and Mountains Building Board Builder LG # 8: I can connect major geological events to the movement of the tectonic plates. ...
... LG # 8 Earthquakes, Volcanoes, and Mountains Building Board Builder LG # 8: I can connect major geological events to the movement of the tectonic plates. ...
Continental Drift and Plate Tectonics
... • Proposed in 1960’s by a variety of scientists including Hess, Dietz and Vine • Suggests that the lithosphere is broken up into many plates which are moving around the earth in different directions • All of the continents were once together in one supercontinent – Pangaea • Movement is caused by co ...
... • Proposed in 1960’s by a variety of scientists including Hess, Dietz and Vine • Suggests that the lithosphere is broken up into many plates which are moving around the earth in different directions • All of the continents were once together in one supercontinent – Pangaea • Movement is caused by co ...
Plate tectonics/volcanoes
... 16. Compare and contrast convergent and divergent plate boundaries. Give an example of each. 17. At a mid ocean ridge, where are the youngest rocks found? The oldest? 18. What does seafloor spreading cause? 19. Where do most earthquakes and volcanoes occur? Why? 20. Explain how volcanic island arcs ...
... 16. Compare and contrast convergent and divergent plate boundaries. Give an example of each. 17. At a mid ocean ridge, where are the youngest rocks found? The oldest? 18. What does seafloor spreading cause? 19. Where do most earthquakes and volcanoes occur? Why? 20. Explain how volcanic island arcs ...
Physical Layers of Earth
... The oceanic crust is thinner than the continental crust. Oceanic crust is also denser than continental crust ...
... The oceanic crust is thinner than the continental crust. Oceanic crust is also denser than continental crust ...
Text from Narration doc
... Divergent, and Convergent. RETURNING to the world map view, we show. 1) Transform, or strike-slip, boundaries are places where plates move horizontally against each other, 2) Divergent, or constructive, boundaries are places were plates move apart from one another, and 3) Places were plates press in ...
... Divergent, and Convergent. RETURNING to the world map view, we show. 1) Transform, or strike-slip, boundaries are places where plates move horizontally against each other, 2) Divergent, or constructive, boundaries are places were plates move apart from one another, and 3) Places were plates press in ...
Dynamic Earth Webquest
... 8. Plate Tectonics Theory has been widely accepted since the ___________’s. It states that Earth’s outer layer or _________________ is broken up into ________________. These plates hold ______________________ and _____________________. They are constantly _________________. 9. Continents over time ...
... 8. Plate Tectonics Theory has been widely accepted since the ___________’s. It states that Earth’s outer layer or _________________ is broken up into ________________. These plates hold ______________________ and _____________________. They are constantly _________________. 9. Continents over time ...
to the PDF
... fingernails grow. The Mid-Atlantic ridge has the same shape as the opposite coastlines! ...
... fingernails grow. The Mid-Atlantic ridge has the same shape as the opposite coastlines! ...
Our Planet
... away from the ridge along with the underlying, uppermost mantle. The ridge represents a zone of two plates moving away from each other (eg. Mid-ocean Ridges) ...
... away from the ridge along with the underlying, uppermost mantle. The ridge represents a zone of two plates moving away from each other (eg. Mid-ocean Ridges) ...
DATE - 7A Class Blog
... only pushed or pulled, but also _____________________________________. 28. While geologists are still not sure as to what causes the Earth’s plates to move, one explanation is that ______________________________ move the plates. 29. Places where two plates collide are called _____________________ or ...
... only pushed or pulled, but also _____________________________________. 28. While geologists are still not sure as to what causes the Earth’s plates to move, one explanation is that ______________________________ move the plates. 29. Places where two plates collide are called _____________________ or ...
chapter 11 Dynamic Planet
... complex forms on the continent side of the trench – Partial melting of the descending oceanic plate forms an andesitic volcano mountain range ...
... complex forms on the continent side of the trench – Partial melting of the descending oceanic plate forms an andesitic volcano mountain range ...
File
... 17. What is a timeline? Why is it useful? 18. What does relative dating mean? Give 1-2 examples 19. Name 3 environmental conditions that can affect the world we live in. Tectonic plates: 20. The tectonic plates make up what? 21. How many tectonic plates are there? 22. How do tectonic plates move? 23 ...
... 17. What is a timeline? Why is it useful? 18. What does relative dating mean? Give 1-2 examples 19. Name 3 environmental conditions that can affect the world we live in. Tectonic plates: 20. The tectonic plates make up what? 21. How many tectonic plates are there? 22. How do tectonic plates move? 23 ...
Seafloor Spreading and Plate Tectonics
... Magnetic poles have never been more the 20o from geographic poles of rotation; rest of apparent wander results from motion of continents! ...
... Magnetic poles have never been more the 20o from geographic poles of rotation; rest of apparent wander results from motion of continents! ...
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.