![Development of the Theory of Plate Tectonics](http://s1.studyres.com/store/data/015000901_1-f0dd5a348e821e87b0565e3f30ea3eb9-300x300.png)
Development of the Theory of Plate Tectonics
... In the 1960s, Harry Hess used data collected to suggest the theory of seafloor spreading to explain the ridges. He explained that: 1. Hot, less dense material below Earth’s crust rises upward to the surface at the midocean ridges. 2. Then, it flows sideways, carrying the seafloor away from the ridge ...
... In the 1960s, Harry Hess used data collected to suggest the theory of seafloor spreading to explain the ridges. He explained that: 1. Hot, less dense material below Earth’s crust rises upward to the surface at the midocean ridges. 2. Then, it flows sideways, carrying the seafloor away from the ridge ...
Tectonic Plates
... rises upward to the surface at the mid-ocean ridges. Then, it flows sideways, carrying the _______________ away from the ridge. As the seafloor spreads apart, ______________ moves up and flows from the cracks, cools, and forms new seafloor. ...
... rises upward to the surface at the mid-ocean ridges. Then, it flows sideways, carrying the _______________ away from the ridge. As the seafloor spreads apart, ______________ moves up and flows from the cracks, cools, and forms new seafloor. ...
Document
... molecules get closer together, the mantle becomes more dense and it sinks to start the cycle all over again. 45. Draw a picture of all three types of plate boundaries. Divergent: spreading apart, ...
... molecules get closer together, the mantle becomes more dense and it sinks to start the cycle all over again. 45. Draw a picture of all three types of plate boundaries. Divergent: spreading apart, ...
Earth Science Chapter 9 Section 4 Review
... a. iron-rich rocks show the location of the magnetic poles at the time of their formation b. all rocks, regardless of when they are formed, have the same polarity c. all rocks have a reversed polarity d. rocks do not possess magnetic properties ...
... a. iron-rich rocks show the location of the magnetic poles at the time of their formation b. all rocks, regardless of when they are formed, have the same polarity c. all rocks have a reversed polarity d. rocks do not possess magnetic properties ...
Supplemental Earth Science Review Questions
... coast of Africa and the east coast of South America. C. Stripes of rock from the Mid-Atlantic Ridge have alternating magnetic polarities. D. There is more sediment along the continental shelf than on the ocean floor. 9. Which of the following statements best defines Pangaea? A. an underwater ocean r ...
... coast of Africa and the east coast of South America. C. Stripes of rock from the Mid-Atlantic Ridge have alternating magnetic polarities. D. There is more sediment along the continental shelf than on the ocean floor. 9. Which of the following statements best defines Pangaea? A. an underwater ocean r ...
Earth`s interior - Rochester Community Schools
... Background: On Earth one needs a sensitive needle to detect magnetic forces, and out in space they are usually much, much weaker. But beyond the dense atmosphere, such forces have a much bigger role, and a region exists around the Earth where they dominate the environment, a region known as the Eart ...
... Background: On Earth one needs a sensitive needle to detect magnetic forces, and out in space they are usually much, much weaker. But beyond the dense atmosphere, such forces have a much bigger role, and a region exists around the Earth where they dominate the environment, a region known as the Eart ...
Plate Tectonic Theory
... material rises toward the mid-ocean ridges Some material solidifies. Some flows sideways and drags the seafloor along with it in both directions As the seafloor spreads apart, new seafloor is created Older seafloor moves away in opposite ...
... material rises toward the mid-ocean ridges Some material solidifies. Some flows sideways and drags the seafloor along with it in both directions As the seafloor spreads apart, new seafloor is created Older seafloor moves away in opposite ...
Hard Drive Side-Channel Attacks using Smartphone Magnetic Field
... sensor readings once it is triggered. The unsuspecting user may place the phone in close proximity to the laptop when working on the laptop in the office or in a cafe. In this position, the malware can launch a number of attacks, such as OS or application startup detection. OS Boot-Up Detection: Fi ...
... sensor readings once it is triggered. The unsuspecting user may place the phone in close proximity to the laptop when working on the laptop in the office or in a cafe. In this position, the malware can launch a number of attacks, such as OS or application startup detection. OS Boot-Up Detection: Fi ...
Sea-floor spreading
... rises from the mantle and erupts. The molten material then spreads out, pushing older rock to both sides of the ridge. • Over tens of millions of years, the process continues until the oldest ocean floor collides with the continental crust • The more dense oceanic crust subducts (sinks) back into th ...
... rises from the mantle and erupts. The molten material then spreads out, pushing older rock to both sides of the ridge. • Over tens of millions of years, the process continues until the oldest ocean floor collides with the continental crust • The more dense oceanic crust subducts (sinks) back into th ...
Chapter 8 Study Guide – Earthquakes 1. What is an earthquake
... calculate the distance to the epicenter of the earthquake. 10. Describe the make-up of the inner and outer core. Outer core: 2260 km thick, metallic iron flows through this layer, creating Earth’s magnetic field Inner core: 1220 km thick, solid iron-nickel alloy (solid due to extremely high pressure ...
... calculate the distance to the epicenter of the earthquake. 10. Describe the make-up of the inner and outer core. Outer core: 2260 km thick, metallic iron flows through this layer, creating Earth’s magnetic field Inner core: 1220 km thick, solid iron-nickel alloy (solid due to extremely high pressure ...
Sea-Floor Spreading
... ocean floor. Rocks closest to the ridge were younger than rocks found farther away. Magnetic mapping also helped to prove this theory. Scientists found identical magnetic stripes on both sides of the ridge. Scientists studied Hess's and Wegener's work. The theory of continental drift was combined wi ...
... ocean floor. Rocks closest to the ridge were younger than rocks found farther away. Magnetic mapping also helped to prove this theory. Scientists found identical magnetic stripes on both sides of the ridge. Scientists studied Hess's and Wegener's work. The theory of continental drift was combined wi ...
Earth*s Interior - Mr. Cramer
... Magnetic field affects the whole Earth A compass needle aligns with the line of force in Earth’s magnetic field ...
... Magnetic field affects the whole Earth A compass needle aligns with the line of force in Earth’s magnetic field ...
31. From Continental Drift to Plate Tectonics
... Benjamin Franklin the correspondence between coastlines was so striking that he speculated, far ahead of his time, that the surface of the earth might be a cracked shell whose fragments were driven about by the movements of a dense fluid on which they floated. Near the end of the 19th century, Eduar ...
... Benjamin Franklin the correspondence between coastlines was so striking that he speculated, far ahead of his time, that the surface of the earth might be a cracked shell whose fragments were driven about by the movements of a dense fluid on which they floated. Near the end of the 19th century, Eduar ...
Continental Drift and Plate Tectonics Part 1 Multiple Choice
... 24. Which of the following was the biggest problem with Wegener's Theory of Continental Drift? a. He could not explain the mechanism for movement of the continents b. Too many scientists already came up with the same theory c. All of his evidence turned out to be fake 25. Which two mountain ranges a ...
... 24. Which of the following was the biggest problem with Wegener's Theory of Continental Drift? a. He could not explain the mechanism for movement of the continents b. Too many scientists already came up with the same theory c. All of his evidence turned out to be fake 25. Which two mountain ranges a ...
E.S. Ch. 3 Study Guide
... Wegener’s hypothesis was that all the continents were once joined together in a single landmass and have since drifted apart. Continental Drift— Wegener’s idea; the continents slowly move over Earth’s Surface. Pangaea—The Super Continent. Fossil—is any trace of an ancient organism that has been pres ...
... Wegener’s hypothesis was that all the continents were once joined together in a single landmass and have since drifted apart. Continental Drift— Wegener’s idea; the continents slowly move over Earth’s Surface. Pangaea—The Super Continent. Fossil—is any trace of an ancient organism that has been pres ...
File
... 3. Earth’s layers from outside in are crust, mantle, outer core, inner core. 4. Earth's mantle is a layer of plastic-like hot rock. 5. Earth's inner core is a dense ball of solid metal. 6. Earth's magnetic field results from the spinning of the inner core. 7. According to Wegener's hypothesis of con ...
... 3. Earth’s layers from outside in are crust, mantle, outer core, inner core. 4. Earth's mantle is a layer of plastic-like hot rock. 5. Earth's inner core is a dense ball of solid metal. 6. Earth's magnetic field results from the spinning of the inner core. 7. According to Wegener's hypothesis of con ...
Warm- up Question Summarize: What you know about Continental
... 1. As the magma comes up from the center, what happens to the Oceanic Lithosphere? (The plates are pushed away from the ridge.) 2. What type of formation is formed at the mid-ocean ridge? (Ridges and valleys are formed.) 3. Where is the youngest rock located on the ocean floor? (The youngest rock wi ...
... 1. As the magma comes up from the center, what happens to the Oceanic Lithosphere? (The plates are pushed away from the ridge.) 2. What type of formation is formed at the mid-ocean ridge? (Ridges and valleys are formed.) 3. Where is the youngest rock located on the ocean floor? (The youngest rock wi ...
Plate Evidence 09
... • Same fossils found on many different continents – Fossils of organisms that could not fly or swim between continents – Continents were together when these animals lived, so they could walk from one continent to another ...
... • Same fossils found on many different continents – Fossils of organisms that could not fly or swim between continents – Continents were together when these animals lived, so they could walk from one continent to another ...
continental-drift-and-the-theory-of-plate-tectonics-fran-et-al
... (South America and Africa) were a result of a land bridge between the two continents • Wegner actually specialised in meteorology and astronomy, not geology – so his theories were not taken seriously • His ideas were not concrete – scientists said centrifugal force and tidal pull were not strong eno ...
... (South America and Africa) were a result of a land bridge between the two continents • Wegner actually specialised in meteorology and astronomy, not geology – so his theories were not taken seriously • His ideas were not concrete – scientists said centrifugal force and tidal pull were not strong eno ...
LAB 4-3: Seafloor Spreading
... floor and make many new discoveries about the deep ocean. These maps and discoveries have led to a better understanding of the movement of the earth’s tectonic plates under the ocean. As you have already learned, the earth’s crust is broken up into a large number of tectonic plates that are moving i ...
... floor and make many new discoveries about the deep ocean. These maps and discoveries have led to a better understanding of the movement of the earth’s tectonic plates under the ocean. As you have already learned, the earth’s crust is broken up into a large number of tectonic plates that are moving i ...
Slide 1 - Cloudfront.net
... The composition layers of Earth, beginning at Earth’s surface, are the crust, mantle, and core. They physical layers of Earth, beginning at Earth’s surface, are the lithosphere, asthenosphere, mesosphere, outer core, and inner core. 2. Describe evidence that supports the existence of Pangaea. The fi ...
... The composition layers of Earth, beginning at Earth’s surface, are the crust, mantle, and core. They physical layers of Earth, beginning at Earth’s surface, are the lithosphere, asthenosphere, mesosphere, outer core, and inner core. 2. Describe evidence that supports the existence of Pangaea. The fi ...
Seismic waves - Civil Engineering, IISc
... satellites which is used for precise geodetic position measurements. Laser geodynamic satellites orbit the earth at an altitude of 3,700 miles. Laser beams are bounced from one point on the earth, off the satellite, to a second point on the ground. Scientists can then measure the distance between th ...
... satellites which is used for precise geodetic position measurements. Laser geodynamic satellites orbit the earth at an altitude of 3,700 miles. Laser beams are bounced from one point on the earth, off the satellite, to a second point on the ground. Scientists can then measure the distance between th ...
Properties of interstellar filaments observed with Herschel and 3D
... - pairs of angles (filament + background) defining the 3D structure of the field Fixed parameters (derived from Planck observations): - maximum polarization degree (p0) - position angle of the filament in the plane of the sky Fitting the observations - Spanning all the pairs of angles describing ...
... - pairs of angles (filament + background) defining the 3D structure of the field Fixed parameters (derived from Planck observations): - maximum polarization degree (p0) - position angle of the filament in the plane of the sky Fitting the observations - Spanning all the pairs of angles describing ...
Geomagnetic reversal
A geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged. The Earth's field has alternated between periods of normal polarity, in which the direction of the field was the same as the present direction, and reverse polarity, in which the field was the opposite. These periods are called chrons. The time spans of chrons are randomly distributed with most being between 0.1 and 1 million years with an average of 450,000 years. Most reversals are estimated to take between 1,000 and 10,000 years.The latest one, the Brunhes–Matuyama reversal, occurred 780,000 years ago;and may have happened very quickly, within a human lifetime. A brief complete reversal, known as the Laschamp event, occurred only 41,000 years ago during the last glacial period. That reversal lasted only about 440 years with the actual change of polarity lasting around 250 years. During this change the strength of the magnetic field dropped to 5% of its present strength. Brief disruptions that do not result in reversal are called geomagnetic excursions.