Chapter 21.2 PPT - Madison County Schools
... What are Earthquakes? continued • Waves move through Earth and along its surface. – Both P waves and S waves spread out from the focus in all directions through the earth. – Surface waves move only on Earth’s surface. • surface wave: a seismic wave that travels along the surface of a medium and has ...
... What are Earthquakes? continued • Waves move through Earth and along its surface. – Both P waves and S waves spread out from the focus in all directions through the earth. – Surface waves move only on Earth’s surface. • surface wave: a seismic wave that travels along the surface of a medium and has ...
ch 7 study guide Answers
... Continental Crust (less dense) and Oceanic Crust (more dense) 2. What did Wegener call the one large landmass when all the continents were together? Pangaea 3. Where does new oceanic lithosphere form (hint: it happens in the ocean)? Mid-Ocean Ridge 4. What type of plate boundary does an earthquake h ...
... Continental Crust (less dense) and Oceanic Crust (more dense) 2. What did Wegener call the one large landmass when all the continents were together? Pangaea 3. Where does new oceanic lithosphere form (hint: it happens in the ocean)? Mid-Ocean Ridge 4. What type of plate boundary does an earthquake h ...
lithosphere, mid-ocean ridge
... 5. What is a good example of a transform boundary? a. E b. I c. J d. K 6. Which is most likely to happen at I? a. Island arcs will form parallel to a trench b. A spreading center will create a rift valley. c. Continental crust will be destroyed. d. Subduction will cause oceanic crust to melt. 7. Why ...
... 5. What is a good example of a transform boundary? a. E b. I c. J d. K 6. Which is most likely to happen at I? a. Island arcs will form parallel to a trench b. A spreading center will create a rift valley. c. Continental crust will be destroyed. d. Subduction will cause oceanic crust to melt. 7. Why ...
Unit 3 Lesson 1 Geological History
... Chains of islands are found throughout the oceans and especially in the western Pacific margins: the Aleutians, Japan, Philippines, and Indonesia. These "Island arcs" are usually situated along deep-sea trenches and are situated on the continental side of the trench. These observations, along with m ...
... Chains of islands are found throughout the oceans and especially in the western Pacific margins: the Aleutians, Japan, Philippines, and Indonesia. These "Island arcs" are usually situated along deep-sea trenches and are situated on the continental side of the trench. These observations, along with m ...
Seafloor Spreading
... 5. In this model, what do the strips represent? What do the colors represent? 6. New seafloor rock is continually being formed at mid-ocean ridges, and old seafloor rock is continually being removed from Earth’s surface at ocean trenches. Rock on continents also is continually formed but is not remo ...
... 5. In this model, what do the strips represent? What do the colors represent? 6. New seafloor rock is continually being formed at mid-ocean ridges, and old seafloor rock is continually being removed from Earth’s surface at ocean trenches. Rock on continents also is continually formed but is not remo ...
AWegener_DavidH
... •Plate tectonics is the geologic theory that Earth’s crust is made up of rigid, “floating,” plates. ...
... •Plate tectonics is the geologic theory that Earth’s crust is made up of rigid, “floating,” plates. ...
Composition of the crust, part 1
... Continental drift is the theory that proposes that the present continents were originally connected as one or two large landmasses that have broken up and literally drifted apart over the last several million years. Plate tectonics, a descendant of continental drift, is a coherent theory of massive ...
... Continental drift is the theory that proposes that the present continents were originally connected as one or two large landmasses that have broken up and literally drifted apart over the last several million years. Plate tectonics, a descendant of continental drift, is a coherent theory of massive ...
Geophysical Applicability of Atomic Clocks
... 5 Harris-Stowe State University, St. Louis, MO, USA. ...
... 5 Harris-Stowe State University, St. Louis, MO, USA. ...
Possible Biological Consequences of Plate Tectonics
... 5 percent of the earth's history. . Until the 1960's many geologists, particularly American geologists, supported a static theory of stable continents, in which the continents had always been about where they are now. This was mainly because no mechanism for "contintneal drift" through oceanic crust ...
... 5 percent of the earth's history. . Until the 1960's many geologists, particularly American geologists, supported a static theory of stable continents, in which the continents had always been about where they are now. This was mainly because no mechanism for "contintneal drift" through oceanic crust ...
Study Guide Questions – Earth Structure and Plate Tectonics What
... Broader application of radiometric dating revealed some really old (billions of years) pieces of continents, but the ocean basins were no older than about 200 million years The expanding field of paleomagnetics showed that the continents had moved independently of each other through time. And paleom ...
... Broader application of radiometric dating revealed some really old (billions of years) pieces of continents, but the ocean basins were no older than about 200 million years The expanding field of paleomagnetics showed that the continents had moved independently of each other through time. And paleom ...
Study Guide - Islands Unit Exam
... Describe how scientists use seismic waves to hypothesize the structure of the earth’s interior. Describe each layer of the earth in terms of its state of matter and relative depth in the Earth’s interior. Describe how the physical properties of density, pressure and temperature change as depth ...
... Describe how scientists use seismic waves to hypothesize the structure of the earth’s interior. Describe each layer of the earth in terms of its state of matter and relative depth in the Earth’s interior. Describe how the physical properties of density, pressure and temperature change as depth ...
Y10Ge U1B_1 Hazards Oct 15 PP
... and is the hottest part of the earth. The inner core is solid. It is made up of iron and nickel with temperatures of up to 5500°C. With its immense heat energy, the inner core is like the engine room of the Earth. The outer core is the layer surrounding the inner core. It is a liquid layer, also mad ...
... and is the hottest part of the earth. The inner core is solid. It is made up of iron and nickel with temperatures of up to 5500°C. With its immense heat energy, the inner core is like the engine room of the Earth. The outer core is the layer surrounding the inner core. It is a liquid layer, also mad ...
Study Guide Answer Key for Plate Tectonics
... 21. What happens when two plates carrying continental crust collide? Mountain ranges are formed because neither crust is dense enough to subduct under the other 22. What happens when a plate carrying continental crust and a plate carrying oceanic crust collide? The denser oceanic crust subducts und ...
... 21. What happens when two plates carrying continental crust collide? Mountain ranges are formed because neither crust is dense enough to subduct under the other 22. What happens when a plate carrying continental crust and a plate carrying oceanic crust collide? The denser oceanic crust subducts und ...
Structure of the Earth
... • That the science leading to our understanding of Earth’s structure is interesting and complicated. • It involves Snell’s Law and the physics of wave propagation, wave theory and spherical geometry combined with experimental highpressure mineral physics. • We will not cover the geophysics of s ...
... • That the science leading to our understanding of Earth’s structure is interesting and complicated. • It involves Snell’s Law and the physics of wave propagation, wave theory and spherical geometry combined with experimental highpressure mineral physics. • We will not cover the geophysics of s ...
Plate Tectonics - LunsfordEnvironmentalScience
... of the lithosphere and the buoyant force of the asthenosphere Isostatic Rebound is when compensation occurs from an increase or decrease of lithospheric weight…causing earthquakes along weak areas called - faults ...
... of the lithosphere and the buoyant force of the asthenosphere Isostatic Rebound is when compensation occurs from an increase or decrease of lithospheric weight…causing earthquakes along weak areas called - faults ...
Plate Tect with graphic organizer
... constant, slow motion, driven by convection currents in the mantle. True or False: The theory of plate tectonics explains the formation, movement, and subduction of Earth’s plates. True ...
... constant, slow motion, driven by convection currents in the mantle. True or False: The theory of plate tectonics explains the formation, movement, and subduction of Earth’s plates. True ...
Geology 3015 Lecture Notes Week 4b
... • Wegener and du Toit cited the bodies of evidence listed above to support their theory of continental drift, but as late as the 1950s most geologists did not accept the idea of moving continents. • The lack of a viable mechanism was the main reason that the theory did not gain wide acceptance for 4 ...
... • Wegener and du Toit cited the bodies of evidence listed above to support their theory of continental drift, but as late as the 1950s most geologists did not accept the idea of moving continents. • The lack of a viable mechanism was the main reason that the theory did not gain wide acceptance for 4 ...
nvest ig at io n - Creation Studies Institute
... (1) An electric current can produce magnetism, and (2) magnetism can produce an electric current. Years passed while research and technology based on these two little ideas continued. The Electromagnets led to the invention of the telegraph. Joseph work was done by both scientists and inventors. Not ...
... (1) An electric current can produce magnetism, and (2) magnetism can produce an electric current. Years passed while research and technology based on these two little ideas continued. The Electromagnets led to the invention of the telegraph. Joseph work was done by both scientists and inventors. Not ...
History of geomagnetism
The history of geomagnetism is concerned with the history of the study of Earth's magnetic field. It encompasses the history of navigation using compasses, studies of the prehistoric magnetic field (archeomagnetism and paleomagnetism), and applications to plate tectonics.Magnetism has been known since prehistory, but knowledge of the Earth's field developed slowly. The horizontal direction of the Earth's field was first measured in the fourth century BC but the vertical direction was not measured until 1544 AD and the intensity was first measured in 1791. At first, compasses were thought to point towards locations in the heavens, then towards magnetic mountains. A modern experimental approach to understanding the Earth's field began with de Magnete, a book published by William Gilbert in 1600. His experiments with a magnetic model of the Earth convinced him that the Earth itself is a large magnet.