Oceanic Crust
... What are tectonic plates made of? • Plates are made of rigid lithosphere. The lithosphere is made up of the crust and the upper part of the mantle. ...
... What are tectonic plates made of? • Plates are made of rigid lithosphere. The lithosphere is made up of the crust and the upper part of the mantle. ...
“I Can” – Plate Tectonics Objectives – Learning Target Analysis
... divergent plate boundaries) E 3.2C Describe the differences between oceanic and continental crust (including density, thickness, age, composition – what it’s made of) – sec 6.1-6.4. E3.3A Explain how plate tectonics accounts for the features and processes (sea floor spreading, mid-ocean ridges, subd ...
... divergent plate boundaries) E 3.2C Describe the differences between oceanic and continental crust (including density, thickness, age, composition – what it’s made of) – sec 6.1-6.4. E3.3A Explain how plate tectonics accounts for the features and processes (sea floor spreading, mid-ocean ridges, subd ...
How Do Earthquakes Tell Us About the Earth`s Interior?
... How Do Earthquakes Tell Us About the Earth’s Interior? ...
... How Do Earthquakes Tell Us About the Earth’s Interior? ...
Plate Tectonics - Net Start Class
... D. Asthenosphere- is a zone approximately 150 km thick and behaves plastically (solid that flows) because of extreme temperature. 1. This layer acts as a lubricating fluid allowing the plates to move. 2. Convection currents – the mantle close to the hot outer core heats, becomes less dense and rise ...
... D. Asthenosphere- is a zone approximately 150 km thick and behaves plastically (solid that flows) because of extreme temperature. 1. This layer acts as a lubricating fluid allowing the plates to move. 2. Convection currents – the mantle close to the hot outer core heats, becomes less dense and rise ...
Pack 15 KS3 Chemistry rock detectives Earth structure
... "to build." If we put these two words together, we get the term plate tectonics and this is the theory geologists use to explain how the Earth's surface is built up. The theory of plate tectonics says that the Earth's outer layer is broken into twelve or more plates. Some are large and some are smal ...
... "to build." If we put these two words together, we get the term plate tectonics and this is the theory geologists use to explain how the Earth's surface is built up. The theory of plate tectonics says that the Earth's outer layer is broken into twelve or more plates. Some are large and some are smal ...
sc.912.e.6.1
... • Slab-pull is a mechanism that contributes to plate motion in which cool, dense oceanic crust sinks into the mantle and “pulls” the trailing lithosphere along. It is thought to be the primary downward arm of convective flow in the mantle. ...
... • Slab-pull is a mechanism that contributes to plate motion in which cool, dense oceanic crust sinks into the mantle and “pulls” the trailing lithosphere along. It is thought to be the primary downward arm of convective flow in the mantle. ...
Section 22.4 Plate Tectonics
... 6. Is the following sentence true or false? The theory of sea-floor spreading explains why rocks of the ocean floor are youngest near the mid-ocean ridge. 7. Is the following sentence true or false? Old oceanic plates sink into the mantle at mid-ocean ridges in a process called subduction. 8. A depr ...
... 6. Is the following sentence true or false? The theory of sea-floor spreading explains why rocks of the ocean floor are youngest near the mid-ocean ridge. 7. Is the following sentence true or false? Old oceanic plates sink into the mantle at mid-ocean ridges in a process called subduction. 8. A depr ...
Magma Supply Vs Magma Plumbing
... • A system can be defined as that part of the universe that is arbitrarily or naturally isolated for the purposes of consideration or experimentation. For our purposes it will generally be a sample of a rock • A phase is defined as a chemically and physically homogeneous part of a system. Each miner ...
... • A system can be defined as that part of the universe that is arbitrarily or naturally isolated for the purposes of consideration or experimentation. For our purposes it will generally be a sample of a rock • A phase is defined as a chemically and physically homogeneous part of a system. Each miner ...
Plate Boundaries
... The mid-ocean ridge (shown in red) winds its way between the continents much like the seam on a baseball. ...
... The mid-ocean ridge (shown in red) winds its way between the continents much like the seam on a baseball. ...
Mantle Materials
... olivine transforms to a ccp structure called wadsleyite. • Iron rich olivines do not undergo this transformation. At higher pressures, both the Fa-rich olivine and wadsleyite transform to a spinel structure, (Mg,Fe)2SiO4, called ...
... olivine transforms to a ccp structure called wadsleyite. • Iron rich olivines do not undergo this transformation. At higher pressures, both the Fa-rich olivine and wadsleyite transform to a spinel structure, (Mg,Fe)2SiO4, called ...
Royal Swedish Academy of Sciences
... extensional and compressional boundary zones between the plates are the scenes of the real action, with major earthquakes, volcanic eruptions, large displacements and mountain building. Plate motion is maintained by convection created by the Earth’s heat engine. McKenzie’s early numerical modelling ...
... extensional and compressional boundary zones between the plates are the scenes of the real action, with major earthquakes, volcanic eruptions, large displacements and mountain building. Plate motion is maintained by convection created by the Earth’s heat engine. McKenzie’s early numerical modelling ...
Chapter 7, Section 1 - Directed Reading B
... _____8. part of the mantle made of solid rock that flows slowly Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. ...
... _____8. part of the mantle made of solid rock that flows slowly Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. ...
Part I. The Layers of Earth - www .alexandria .k12 .mn .us
... 4. Describe, in your own words, how the earth’s layers were formed? (see “The Four Layers”) _____________________________________________________________________ _____________________________________________________________________ ...
... 4. Describe, in your own words, how the earth’s layers were formed? (see “The Four Layers”) _____________________________________________________________________ _____________________________________________________________________ ...
Plate Tectonics - Mountain Home School District
... comparison of how oceanic and continental crust float in the mantle. Also, show how the crust floats differently in the mantle beneath a mountain range compared to a flat ...
... comparison of how oceanic and continental crust float in the mantle. Also, show how the crust floats differently in the mantle beneath a mountain range compared to a flat ...
1 - Ridgefield School District
... 3. The crust and upper mantle together are called the ____________________. 4. Beneath this layer is the plasticlike ____________________. 5. Scientists suggest that differences in density cause hot, plasticlike rock to be forced upward toward the surface, cool, and sink. This cycle is called a ____ ...
... 3. The crust and upper mantle together are called the ____________________. 4. Beneath this layer is the plasticlike ____________________. 5. Scientists suggest that differences in density cause hot, plasticlike rock to be forced upward toward the surface, cool, and sink. This cycle is called a ____ ...
Plate Tectonics - bvsd.k12.pa.us
... 3. The crust and upper mantle together are called the ____________________. 4. Beneath this layer is the plasticlike ____________________. 5. Scientists suggest that differences in density cause hot, plasticlike rock to be forced upward toward the surface, cool, and sink. This cycle is called a ____ ...
... 3. The crust and upper mantle together are called the ____________________. 4. Beneath this layer is the plasticlike ____________________. 5. Scientists suggest that differences in density cause hot, plasticlike rock to be forced upward toward the surface, cool, and sink. This cycle is called a ____ ...
Plate Tectonics and the Ocean Floor opens with a brief history of
... 4. Radiometric age dating establishes that ocean floor is youngest at mid-ocean ridge and oldest toward continents ...
... 4. Radiometric age dating establishes that ocean floor is youngest at mid-ocean ridge and oldest toward continents ...
Layers of the Earth
... The South American plate is a single plate containing both continental and oceanic crust. It is surrounded by several other oceanic plates. ...
... The South American plate is a single plate containing both continental and oceanic crust. It is surrounded by several other oceanic plates. ...
layers of the Earth are the crust
... • The crust is the layer that forms the outer “skin” of the earth • It is a layer of solid rock that includes both dry land and the ocean floor. • It is the thinnest layer of the earth and is between 5-100 km thick. • It is thickest under mountains and thinnest beneath the ocean. • 2 types of crust ...
... • The crust is the layer that forms the outer “skin” of the earth • It is a layer of solid rock that includes both dry land and the ocean floor. • It is the thinnest layer of the earth and is between 5-100 km thick. • It is thickest under mountains and thinnest beneath the ocean. • 2 types of crust ...
Mantle plume
A mantle plume is a mechanism proposed in 1971 to explain volcanic regions of the earth that were not thought to be explicable by the then-new theory of plate tectonics. Some such volcanic regions lie far from tectonic plate boundaries, for example, Hawaii. Others represent unusually large-volume volcanism, whether on plate boundaries, e.g. Iceland, or basalt floods such as the Deccan or Siberian traps.A mantle plume is posited to exist where hot rock nucleates at the core-mantle boundary and rises through the Earth's mantle becoming a diapir in the Earth's crust. The currently active volcanic centers are known as ""hot spots"". In particular, the concept that mantle plumes are fixed relative to one another, and anchored at the core-mantle boundary, was thought to provide a natural explanation for the time-progressive chains of older volcanoes seen extending out from some such hot spots, such as the Hawaiian–Emperor seamount chain.The hypothesis of mantle plumes from depth is not universally accepted as explaining all such volcanism. It has required progressive hypothesis-elaboration leading to variant propositions such as mini-plumes and pulsing plumes. Another hypothesis for unusual volcanic regions is the ""Plate model"". This proposes shallower, passive leakage of magma from the mantle onto the Earth's surface where extension of the lithosphere permits it, attributing most volcanism to plate tectonic processes, with volcanoes far from plate boundaries resulting from intraplate extension.