Section 1.1 Outline
... Inner core: a ball of hot, solid materials, enormous pressure; remains a solid Outer core: layer of liquid metals that surrounds inner core; remains a liquid due to lower pressure Mantle: thickest layer (2900 km or 1700 mi); hot rock that is less dense than core; top part is cool & rigid; below that ...
... Inner core: a ball of hot, solid materials, enormous pressure; remains a solid Outer core: layer of liquid metals that surrounds inner core; remains a liquid due to lower pressure Mantle: thickest layer (2900 km or 1700 mi); hot rock that is less dense than core; top part is cool & rigid; below that ...
Earth Science Vocabulary
... 2. Conduction – the transfer of thermal energy through direct contact between particles of matter 3. Continental Drift – the hypothesis that all continents were once joined together in a single landmass and have since drifted to their current locations 4. Convection – the transfer of thermal energy ...
... 2. Conduction – the transfer of thermal energy through direct contact between particles of matter 3. Continental Drift – the hypothesis that all continents were once joined together in a single landmass and have since drifted to their current locations 4. Convection – the transfer of thermal energy ...
Earth`s Interior
... Heat is created by the radioactive decay and primordial energy (left over from Big Bang) ...
... Heat is created by the radioactive decay and primordial energy (left over from Big Bang) ...
Lecture 2b: Hot spots
... A large summit caldera develops when the roof collapses into a shallow (<1 km below summit) magma chamber. Most lavas ascend to this summit magma chamber and degas and differentiate there, even if they erupt down on the… Rift zones that develop when gravitational stresses and push from intruding ...
... A large summit caldera develops when the roof collapses into a shallow (<1 km below summit) magma chamber. Most lavas ascend to this summit magma chamber and degas and differentiate there, even if they erupt down on the… Rift zones that develop when gravitational stresses and push from intruding ...
Lithosphere Part 2
... How do Plates Move? • The driving forces of plate motion still are active subjects of on-going research within geophysics. • Leading theory: plates of lithosphere are moved around by convection in the underlying hot mantle. ...
... How do Plates Move? • The driving forces of plate motion still are active subjects of on-going research within geophysics. • Leading theory: plates of lithosphere are moved around by convection in the underlying hot mantle. ...
Plate Tectonic Notes Layer of Earth 1. inner core
... Wegener used the similar rocks and similar fossils found on different continents ! 5. Early studies of the ocean floor helped develop the theory of plate tectonics because the age of oceanic crust increases with distance from the mid-ocean ridge.! 6. Plate movement is caused by convection in the ast ...
... Wegener used the similar rocks and similar fossils found on different continents ! 5. Early studies of the ocean floor helped develop the theory of plate tectonics because the age of oceanic crust increases with distance from the mid-ocean ridge.! 6. Plate movement is caused by convection in the ast ...
Subduction Zones
... continental lithosphere or island arc collide: they accrete to each other and the basin between is destroyed. This process also brings old seafloor (ophiolites) up onto continent edges. ...
... continental lithosphere or island arc collide: they accrete to each other and the basin between is destroyed. This process also brings old seafloor (ophiolites) up onto continent edges. ...
Plate Tectonics Study guide - Grants Pass School District 7
... Where is the Moho located?______________________________________________________. The Moho has plasticity, which allows the crust to move slowly over the mantle. What does plasticity ...
... Where is the Moho located?______________________________________________________. The Moho has plasticity, which allows the crust to move slowly over the mantle. What does plasticity ...
Layers of the Earth
... 1,000 degrees C to 3,700 degrees C. Similar to the crust, but has more magnesium. ...
... 1,000 degrees C to 3,700 degrees C. Similar to the crust, but has more magnesium. ...
Wizard Test Maker
... A) gotten smaller B) been inactive C) gotten larger D) become older than the Pacific Ocean 15. Who was the first person to write about how the continents seem to fit together like a jigsaw puzzle? A) Prince Henry the Navigator B) James Cook C) Alfred Wegener D) Ferdinand Magellan 16. According to th ...
... A) gotten smaller B) been inactive C) gotten larger D) become older than the Pacific Ocean 15. Who was the first person to write about how the continents seem to fit together like a jigsaw puzzle? A) Prince Henry the Navigator B) James Cook C) Alfred Wegener D) Ferdinand Magellan 16. According to th ...
Plate Tectonics
... Write the letter of the correct answer on the line at the left. (1 point each) _____ 1. Scientists rejected Wegener’s theory because he could not a. explain why continental crust was denser that oceanic crust b. describe the climate of Pangaea c. explain what force pushes or pulls continents d. desc ...
... Write the letter of the correct answer on the line at the left. (1 point each) _____ 1. Scientists rejected Wegener’s theory because he could not a. explain why continental crust was denser that oceanic crust b. describe the climate of Pangaea c. explain what force pushes or pulls continents d. desc ...
Plate Tectonic Terms
... 4. Lithosphere - outer solid part of the earth, including the crust and uppermost mantle. The lithosphere is about 100 km thick, although its thickness is age dependent (older lithosphere is thicker). 5. Mid-Ocean Ridge - an underwater mountain system that consists of various mountain ranges (chains ...
... 4. Lithosphere - outer solid part of the earth, including the crust and uppermost mantle. The lithosphere is about 100 km thick, although its thickness is age dependent (older lithosphere is thicker). 5. Mid-Ocean Ridge - an underwater mountain system that consists of various mountain ranges (chains ...
9.4 Testing Plate Tectonics 9.5 Mechanisms of Plate Motions
... • Scientists found a close link between deep-focus earthquakes and ocean trenches. • The absence of deep-focus earthquakes along the oceanic ridge system was shown to be consistent with the new theory. ...
... • Scientists found a close link between deep-focus earthquakes and ocean trenches. • The absence of deep-focus earthquakes along the oceanic ridge system was shown to be consistent with the new theory. ...
6th Grade Earth Science – Inside Earth Vocabulary 1. crust – the
... and the north & south poles on earth 9. compass – an instrument composed of a small, light-weight magnet called a needle, that is balanced on a frictionless bearing 10. continental drift – the hypothesis that the continents slowly move across the Earth’s surface 11. sea-floor spreading – the process ...
... and the north & south poles on earth 9. compass – an instrument composed of a small, light-weight magnet called a needle, that is balanced on a frictionless bearing 10. continental drift – the hypothesis that the continents slowly move across the Earth’s surface 11. sea-floor spreading – the process ...
Plate Tectonics Study Guide
... 29. How does fossil evidence support the continental drift theory? Fossils being in places that do not make sense today ...
... 29. How does fossil evidence support the continental drift theory? Fossils being in places that do not make sense today ...
Water and its influence on the lithosphere– asthenosphere boundary
... David H. Green (University of Tasmania) The Earth has distinctive convective behaviour, described by the plate tectonics model, in which lateral motion of the oceanic lithosphere of basaltic crust and peridotitic uppermost mantle is decoupled from the underlying mechanically weaker upper mantle (ast ...
... David H. Green (University of Tasmania) The Earth has distinctive convective behaviour, described by the plate tectonics model, in which lateral motion of the oceanic lithosphere of basaltic crust and peridotitic uppermost mantle is decoupled from the underlying mechanically weaker upper mantle (ast ...
Earthquake – violent shaking of the ground
... Fault in California Divergent boundary – plates move away from each other, move apart rift – splitting of a continent, rips it apart radiation – form of energy transfer through waves conduction – form of energy transfer through solids by touching, atom to atom ...
... Fault in California Divergent boundary – plates move away from each other, move apart rift – splitting of a continent, rips it apart radiation – form of energy transfer through waves conduction – form of energy transfer through solids by touching, atom to atom ...
The Earth`s structure
... of solid material and floats on the Mantle. Its thickness varies depending upon the type of materials of which it is made. Therefore Oceanic crust is about 6 to 11km thick, while Continental crust is about 30 km thick. 2. The Mantle It consists of materials which are softer and denser. It is in a se ...
... of solid material and floats on the Mantle. Its thickness varies depending upon the type of materials of which it is made. Therefore Oceanic crust is about 6 to 11km thick, while Continental crust is about 30 km thick. 2. The Mantle It consists of materials which are softer and denser. It is in a se ...
Bell Ringer - Hart County Schools
... • Hypothesis 2- the plates are driven by the force of gravity acting on their own massive weight. ...
... • Hypothesis 2- the plates are driven by the force of gravity acting on their own massive weight. ...
Plate Teconics Study Guide
... 4. Name four pieces of evidence that supports the theory of continental drift. 5. What provides us with knowledge about the interior of the earth? 6. What is evidence of sea-floor spreading? 7. What forces cause the earth’s plates to move? 8. Give an example of each type of tectonic plate boundary a ...
... 4. Name four pieces of evidence that supports the theory of continental drift. 5. What provides us with knowledge about the interior of the earth? 6. What is evidence of sea-floor spreading? 7. What forces cause the earth’s plates to move? 8. Give an example of each type of tectonic plate boundary a ...
Plate tectonics: divergent, convergent, and transform plate boundaries
... Railsback's Some Fundamentals of Mineralogy and Geochemistry ...
... Railsback's Some Fundamentals of Mineralogy and Geochemistry ...
Week 21: Plate Tectonics
... b. The mid-ocean ridges are Divergent boundaries ( ). c. Convergent boundaries ( ) could result in subduction as long as oceanic (mafic & dense) crust is involved. d. Transform boundaries exist where the plates are moving past each other (not colliding or separating, just slipping by one another ...
... b. The mid-ocean ridges are Divergent boundaries ( ). c. Convergent boundaries ( ) could result in subduction as long as oceanic (mafic & dense) crust is involved. d. Transform boundaries exist where the plates are moving past each other (not colliding or separating, just slipping by one another ...
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.