Plate Tectonics
... • Transform boundaries happen when two plates are sideswiping each other (in very slow motion). • Major earthquakes occur as these boundaries slip past each other. • The plates may be stuck for years, then suddenly break free and move several inches or even feet. ...
... • Transform boundaries happen when two plates are sideswiping each other (in very slow motion). • Major earthquakes occur as these boundaries slip past each other. • The plates may be stuck for years, then suddenly break free and move several inches or even feet. ...
Review
... 8. Where is the youngest and oldest seafloor with respect to mid-ocean ridges and trenches? 9. What are the three basic plate boundaries? What features are found at each type of plate boundary? How do plate move with respect to each type of plate boundaries? 10. What are the three patterns to age st ...
... 8. Where is the youngest and oldest seafloor with respect to mid-ocean ridges and trenches? 9. What are the three basic plate boundaries? What features are found at each type of plate boundary? How do plate move with respect to each type of plate boundaries? 10. What are the three patterns to age st ...
Earth`s interior volc eq1
... • A layer of solid rock that includes both dry land and the ocean floor. – Very thin compared to the other layers, like the skin of an apple. – Thickest under high mountains, thinnest under the ocean floor. – 5-100 km thick – Oceanic crust is denser than continental. ...
... • A layer of solid rock that includes both dry land and the ocean floor. – Very thin compared to the other layers, like the skin of an apple. – Thickest under high mountains, thinnest under the ocean floor. – 5-100 km thick – Oceanic crust is denser than continental. ...
Gr. 8 NOTES: EARTHQUAKES Name: Pages 325 - 327
... 2. What is a seismic wave, how are they formed & what do they cause? _____________________________________________________________________________ _____________________________________________________________________________ ___________________________________________________________________________ ...
... 2. What is a seismic wave, how are they formed & what do they cause? _____________________________________________________________________________ _____________________________________________________________________________ ___________________________________________________________________________ ...
Journey_to_the_surface_of_the_earth_pt2
... The lithosphere consists of the uppermost mantle and the entire crust It is a solid, rigid layer that is broken into several “plates” – Lithospheric plates are large segments of the lithosphere that consist of oceanic and/or continental crust – Seven major and many minor plates (has changed throug ...
... The lithosphere consists of the uppermost mantle and the entire crust It is a solid, rigid layer that is broken into several “plates” – Lithospheric plates are large segments of the lithosphere that consist of oceanic and/or continental crust – Seven major and many minor plates (has changed throug ...
Earth Structure
... On average has Acid/Intermediate composition. On average 30 km thick but can be up to 90km thick in mountain ranges. Density of 2.7 g/cm3 Will not sink at subduction zones. Old: 4 billion (Precambrian) to Present ...
... On average has Acid/Intermediate composition. On average 30 km thick but can be up to 90km thick in mountain ranges. Density of 2.7 g/cm3 Will not sink at subduction zones. Old: 4 billion (Precambrian) to Present ...
Plate Tectonics Wholly, completely
... shape, and have definite borders that cut through continents and oceans alike. Oceanic crust is much thinner (about 5 km) and denser than continental or terrestrial crust. There are nine large plates and a number of smaller plates. While most plates are comprised of both continental and oceanic crus ...
... shape, and have definite borders that cut through continents and oceans alike. Oceanic crust is much thinner (about 5 km) and denser than continental or terrestrial crust. There are nine large plates and a number of smaller plates. While most plates are comprised of both continental and oceanic crus ...
Plate_tectonics_Ss_2014
... shape, and have definite borders that cut through continents and oceans alike. Oceanic crust is much thinner (about 5 km) and denser than continental or terrestrial crust. There are nine large plates and a number of smaller plates. While most plates are comprised of both continental and oceanic crus ...
... shape, and have definite borders that cut through continents and oceans alike. Oceanic crust is much thinner (about 5 km) and denser than continental or terrestrial crust. There are nine large plates and a number of smaller plates. While most plates are comprised of both continental and oceanic crus ...
Document
... Hot Spots and Mantle plumes reaching the surface. Hot spots tend to be relatively stationary. As an oceanic plate moves over a hot spot new islands can be formed. Most think that the hawiian islands are a result of motion over a hot spot. ...
... Hot Spots and Mantle plumes reaching the surface. Hot spots tend to be relatively stationary. As an oceanic plate moves over a hot spot new islands can be formed. Most think that the hawiian islands are a result of motion over a hot spot. ...
subduction zone
... The Earth’s crust is divided into 12 major plates which are moved in various directions. This plate motion causes them to collide, pull apart, or scrape against each other. Each type of interaction causes a characteristic set of Earth structures or “tectonic” features. The word, tectonic, refers to ...
... The Earth’s crust is divided into 12 major plates which are moved in various directions. This plate motion causes them to collide, pull apart, or scrape against each other. Each type of interaction causes a characteristic set of Earth structures or “tectonic” features. The word, tectonic, refers to ...
Marine Chapter 3, Death by firey doom of eternal
... boundaries. c. They form because the axis of seafloor spreading across the surface of the Earth cannot follow a straight line smoothly. d. They form due to lithospheric plate subduction zones. 39. Primary waves travel ____ as fast as secondary waves. a. three times b. half c. at the same speed d. tw ...
... boundaries. c. They form because the axis of seafloor spreading across the surface of the Earth cannot follow a straight line smoothly. d. They form due to lithospheric plate subduction zones. 39. Primary waves travel ____ as fast as secondary waves. a. three times b. half c. at the same speed d. tw ...
Geographic Influences on Identity
... plates are moving. Scientist Alfred Wegener came up with this theory. The earth's crust is divided into plates that move because of currents in the mantle. ...
... plates are moving. Scientist Alfred Wegener came up with this theory. The earth's crust is divided into plates that move because of currents in the mantle. ...
HW #2 Earthquake Causes 1. Describe the process causing
... The Pacific Plate moves lateral (northward) relative to the North American Plate forming a transform boundary. ...
... The Pacific Plate moves lateral (northward) relative to the North American Plate forming a transform boundary. ...
Plate Tectonics Virtual Lab Directions 1. Go to the following website
... Which plate is thinner and more dense? 26. Describe what happens to this plate? What is this called? 27. What forms at this plate? 28. Earthquakes can also occur at subduction zones, which can cause what? 29. What occurs when two continental plates collide? 30. Where is an example of this? ...
... Which plate is thinner and more dense? 26. Describe what happens to this plate? What is this called? 27. What forms at this plate? 28. Earthquakes can also occur at subduction zones, which can cause what? 29. What occurs when two continental plates collide? 30. Where is an example of this? ...
Dynamic Earth Review Sheet
... o Be able to use the p and s wave chart of page 11 in order to determine the different seismic wave times and epicenter distance. ...
... o Be able to use the p and s wave chart of page 11 in order to determine the different seismic wave times and epicenter distance. ...
document
... • Earth’s continents were once joined in a single large landmass (Pangaea) that broke apart and drifted to their current locations (and are still moving) ...
... • Earth’s continents were once joined in a single large landmass (Pangaea) that broke apart and drifted to their current locations (and are still moving) ...
Dynamic Earth Review Sheet Plate Tectonics Be able to use the
... o Be able to use the p and s wave chart of page 11 in order to determine the different seismic wave times and epicenter distance. ...
... o Be able to use the p and s wave chart of page 11 in order to determine the different seismic wave times and epicenter distance. ...
Geology Unit Test Study Guide
... 3. Why is the inner core Solid even though its temperature is the hottest? _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ ________________________________ ...
... 3. Why is the inner core Solid even though its temperature is the hottest? _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ ________________________________ ...
Theory of Plate Tectonics PowerPoint
... Transform Boundaries • Transform boundaries are characterized by long faults, sometimes hundreds of kilometers in length, and by shallow earthquakes. • Most transform boundaries offset sections of ocean ridges. Sometimes transform boundaries occur on continents. ...
... Transform Boundaries • Transform boundaries are characterized by long faults, sometimes hundreds of kilometers in length, and by shallow earthquakes. • Most transform boundaries offset sections of ocean ridges. Sometimes transform boundaries occur on continents. ...
Layers of the Earth
... and creates a hole in the crust called a rift This rift will extend down to the mantle, allowing mantle material to rise and create new plate material This is why divergent boundaries are called constructive plate ...
... and creates a hole in the crust called a rift This rift will extend down to the mantle, allowing mantle material to rise and create new plate material This is why divergent boundaries are called constructive plate ...
Lecture Chapter 7 Part 2
... Asthenosphere = partially molten part of upper mantle, below lithosphere. Rigid lithospheric plates "float" on flowing asthenosphere. Convection in asthenosphere moves tectonic plates. ...
... Asthenosphere = partially molten part of upper mantle, below lithosphere. Rigid lithospheric plates "float" on flowing asthenosphere. Convection in asthenosphere moves tectonic plates. ...
17.3 Theory of plate Tectonics
... plate, the denser oceanic plate is subducted. – Oceanic-continental convergence produces a trench and a series of volcanoes along the edge of the continental plate. – Two continental plates collide when an ocean basin between converging oceanic and continental plates is entirely subducted. ...
... plate, the denser oceanic plate is subducted. – Oceanic-continental convergence produces a trench and a series of volcanoes along the edge of the continental plate. – Two continental plates collide when an ocean basin between converging oceanic and continental plates is entirely subducted. ...
Chapter2 PlateTectonics
... • On this basis he proposed; –All the continental landmasses were once joined together in one supercontinent—Pangea. All the oceans formed one super ocean—Tetheys. –The Pangea then split into a northern Laurasia and a southern ...
... • On this basis he proposed; –All the continental landmasses were once joined together in one supercontinent—Pangea. All the oceans formed one super ocean—Tetheys. –The Pangea then split into a northern Laurasia and a southern ...
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.