Plate BoundaryTypes
... plate activity occurs at the Mid-Atlantic ridge, where Eurasian and North American, and South American and African plates separate. ...
... plate activity occurs at the Mid-Atlantic ridge, where Eurasian and North American, and South American and African plates separate. ...
Name ____________ Date ______________ Period ________
... rocky crust that rest and moves on semi-liquid mantle. ...
... rocky crust that rest and moves on semi-liquid mantle. ...
Layers of the earth and convection currents
... B Rising material hits rigid lithosphere and cannot go up any further. C The force of gravity is causing denser material to fall. D Core heat causes temperature to rise, therefore decreasing the density of material ...
... B Rising material hits rigid lithosphere and cannot go up any further. C The force of gravity is causing denser material to fall. D Core heat causes temperature to rise, therefore decreasing the density of material ...
1 Continental Drift, Paleomagnetism, and Plate Tectonics History
... At the top of the mid-ocean ridge is the rift valley. Rift valley: a long, narrow trough bounded by normal faults. It represents a region where divergence is taking place. Most divergent plate boundaries are located along the crests of oceanic ridges A few are on land; Continental Rifting Continenta ...
... At the top of the mid-ocean ridge is the rift valley. Rift valley: a long, narrow trough bounded by normal faults. It represents a region where divergence is taking place. Most divergent plate boundaries are located along the crests of oceanic ridges A few are on land; Continental Rifting Continenta ...
17.3-homework - Maples Elementary School
... _________13. Which of the following best describes what happens when a oceanic plate converges with a continental plate? a. a deep-sea trench and a island arc form b. both plates become fractured, and a series of long faults form on the surface c. both plates crumple and a folded mountain range form ...
... _________13. Which of the following best describes what happens when a oceanic plate converges with a continental plate? a. a deep-sea trench and a island arc form b. both plates become fractured, and a series of long faults form on the surface c. both plates crumple and a folded mountain range form ...
Video: Colliding Continents - National Geographic Name: https
... 18. Evidence for the theory of continental drift was first proposed in 1912 by German Scientist Alfred Wegener. He noticed ______________fossils were discovered oceans away from each other. 19. When he first proposed his theory of continental drift, why did the scientific community reject his ideas? ...
... 18. Evidence for the theory of continental drift was first proposed in 1912 by German Scientist Alfred Wegener. He noticed ______________fossils were discovered oceans away from each other. 19. When he first proposed his theory of continental drift, why did the scientific community reject his ideas? ...
Plate Techtonic Review - Petal School District
... as molten material rises thru the cracks in the ocean floor, ridges (mountains) are formed. •caused by underwater volcanoes •occurs at DIVERGENT boundaries ...
... as molten material rises thru the cracks in the ocean floor, ridges (mountains) are formed. •caused by underwater volcanoes •occurs at DIVERGENT boundaries ...
Guided Notes on the Theory of Plate Tectonics
... The earth’s crust and rigid upper mantle are broken into enormous slabs called plates. These plates move in different directions and at different speeds and this movement is caused by the Earth’s internal heat. ...
... The earth’s crust and rigid upper mantle are broken into enormous slabs called plates. These plates move in different directions and at different speeds and this movement is caused by the Earth’s internal heat. ...
Name: - Cobb Learning
... 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 B ...
... 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 B ...
A. Continental Slope Transition from the Cont. Shelf to the ocean
... Seamounts are oceanic islands that do not ...
... Seamounts are oceanic islands that do not ...
Convergent Boundaries - Colliding Plates
... The crust is forced deep into the earth where high _________ and _________ cause trapped water and other gases to be released. This, in turn, makes the base of the crust melt, forming _____________. The magma formed rises up toward the earth’s surface and builds up in _____________ _____________ ...
... The crust is forced deep into the earth where high _________ and _________ cause trapped water and other gases to be released. This, in turn, makes the base of the crust melt, forming _____________. The magma formed rises up toward the earth’s surface and builds up in _____________ _____________ ...
Earth Systems & Resources
... Theory of Plate Tectonics • States that the Earth’s lithosphere is divided into plates, most of which are in constant motion. Tectonic plates “float” on the convecting asthenosphere. • There are three types of plate boundaries (areas where two or more plates meet): • Divergent Plate Boundary – pla ...
... Theory of Plate Tectonics • States that the Earth’s lithosphere is divided into plates, most of which are in constant motion. Tectonic plates “float” on the convecting asthenosphere. • There are three types of plate boundaries (areas where two or more plates meet): • Divergent Plate Boundary – pla ...
PLATE TECTONICS
... continental crust and oceanic crust – Continents are made of continental crust, which is made up of rocks that are less dense than oceanic crust – The ocean floor is made up of oceanic crust, which is made up of rocks that are more dense than continental crust ...
... continental crust and oceanic crust – Continents are made of continental crust, which is made up of rocks that are less dense than oceanic crust – The ocean floor is made up of oceanic crust, which is made up of rocks that are more dense than continental crust ...
Plate tectonics - s3.amazonaws.com
... • Oceanic lithosphere subducts underneath the continental lithosphere • Oceanic lithosphere heats and melts forming magma • The magma rises forming volcanic mountains. • Ex. The Andes (S. America) ...
... • Oceanic lithosphere subducts underneath the continental lithosphere • Oceanic lithosphere heats and melts forming magma • The magma rises forming volcanic mountains. • Ex. The Andes (S. America) ...
Quiz 2 - Brooklyn College
... 14. The Hawaiian Islands are a result of the Pacific Plate passing over a hot spot. ...
... 14. The Hawaiian Islands are a result of the Pacific Plate passing over a hot spot. ...
Layers of The Earth - Songs for Teaching
... Temperature could be how it feels outside Go a lil’ deeper, 1600 Fahrenheit Let me put it in perspective Boiling water is a breeze I bet you ain’t know That’s only 2-1-2 degrees The crust consists of mainly two states First oceanic, second continental plates They float around On the second layer of ...
... Temperature could be how it feels outside Go a lil’ deeper, 1600 Fahrenheit Let me put it in perspective Boiling water is a breeze I bet you ain’t know That’s only 2-1-2 degrees The crust consists of mainly two states First oceanic, second continental plates They float around On the second layer of ...
![The structure of the earth and plate tectonics powerpoint[1].](http://s1.studyres.com/store/data/000675818_1-0c942579df7b5fb5f3e05388b631188c-300x300.png)
The structure of the earth and plate tectonics powerpoint[1].
... • Plate tectonics make up the surface on the earth. The place where one plate meets another is called the plate boundary. Millions of years ago, the continents we know today were all joined together. This was called Pangea. • There is 3 ways plates can move: • Destructive or colliding plates (moving ...
... • Plate tectonics make up the surface on the earth. The place where one plate meets another is called the plate boundary. Millions of years ago, the continents we know today were all joined together. This was called Pangea. • There is 3 ways plates can move: • Destructive or colliding plates (moving ...
Plate Tectonics
... The ______________________ oceanic plate is forced below the less dense continental plate – Oceanic plate _______________ as it pushes into the mantle forcing hot magma & gas up to the _______________________ of the continent. – Forms a deep-ocean trench & a long chain of continental _______________ ...
... The ______________________ oceanic plate is forced below the less dense continental plate – Oceanic plate _______________ as it pushes into the mantle forcing hot magma & gas up to the _______________________ of the continent. – Forms a deep-ocean trench & a long chain of continental _______________ ...
Oceanic Crust
... subducts underneath the continental lithosphere • Oceanic lithosphere heats and dehydrates as it subsides • The melt rises forming volcanism • E.g. The Andes ...
... subducts underneath the continental lithosphere • Oceanic lithosphere heats and dehydrates as it subsides • The melt rises forming volcanism • E.g. The Andes ...
File
... shaped by building-up and wearing away forces. • The unit will help You to examine the constituent parts of the physical environment, forces that created them, patterns in their distribution, and how they influence selected human activities. ...
... shaped by building-up and wearing away forces. • The unit will help You to examine the constituent parts of the physical environment, forces that created them, patterns in their distribution, and how they influence selected human activities. ...
PLATE TECTONICS
... Dip indicates old magnetic pole position Apparent motion of north magnetic pole through time – Split in path – indicates continents split apart ...
... Dip indicates old magnetic pole position Apparent motion of north magnetic pole through time – Split in path – indicates continents split apart ...
Continental Drift and Plate Tectonics
... The plates crash head-on, folding over one another, squeezing the crust into a ___________________ Transform Boundaries When 2 tectonic plates slide past one another ___________________, the boundary is a transform boundary. San Andreas Fault in ___________________ Transform boundaries cause _______ ...
... The plates crash head-on, folding over one another, squeezing the crust into a ___________________ Transform Boundaries When 2 tectonic plates slide past one another ___________________, the boundary is a transform boundary. San Andreas Fault in ___________________ Transform boundaries cause _______ ...
Changes in the Earth`s surface
... • They are moved slowly around by convection currents in the mantle • This has been happening for billions of years ...
... • They are moved slowly around by convection currents in the mantle • This has been happening for billions of years ...
4 - Theory of Plate Tectonics
... A well tested concept that explains a wide range of observations • In 1965, J. Tuzo Wilson, a Canadian scientist proposed the theory of Plate Tectonics – Combined knowledge of sea-floor spreading with continental drift ...
... A well tested concept that explains a wide range of observations • In 1965, J. Tuzo Wilson, a Canadian scientist proposed the theory of Plate Tectonics – Combined knowledge of sea-floor spreading with continental drift ...
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.