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Chapter 11 Notes: Plate Tectonics
... Mid-ocean ridges – form the longest mountain ranges that rise up from the ocean floor o Mapped ocean floor with sonar – device that uses sound waves to measure the distance of an object o Discovered steep-sided valleys split the top of some mid-ocean ridges Sea-floor spreading – new magma/lava rises ...
... Mid-ocean ridges – form the longest mountain ranges that rise up from the ocean floor o Mapped ocean floor with sonar – device that uses sound waves to measure the distance of an object o Discovered steep-sided valleys split the top of some mid-ocean ridges Sea-floor spreading – new magma/lava rises ...
15_chapter 5
... fluctuations; that is, for a dipolar coupling constant L > 1. Without any external magnetic field, the magnetic moments of the scatterers are oriented in random direction. In the presence of magnetic field, the nanoparticles align in the direction of magnetic field when the magnetic dipolar interact ...
... fluctuations; that is, for a dipolar coupling constant L > 1. Without any external magnetic field, the magnetic moments of the scatterers are oriented in random direction. In the presence of magnetic field, the nanoparticles align in the direction of magnetic field when the magnetic dipolar interact ...
Earth`s Composition and Structure
... composed of nitrogen (N2) and oxygen (O2) 3. Earth is made of a variety of minerals, glasses, melts, fluids and volatiles, all left behind during birth of the solar system 4. The Earth has layers: a thin silicate crust, a thick iron- & magnesium silicate mantle, and a thick metallic core 5. Physical ...
... composed of nitrogen (N2) and oxygen (O2) 3. Earth is made of a variety of minerals, glasses, melts, fluids and volatiles, all left behind during birth of the solar system 4. The Earth has layers: a thin silicate crust, a thick iron- & magnesium silicate mantle, and a thick metallic core 5. Physical ...
Earth`s Interior Convection and the MantleSection 2 Summary
... Earth's lithosphere is broken into separate sections called plates. The plates fit closely together along cracks in the crust. They carry the continents, or parts of the ocean floor, or both. Plate tectonics is the geological theory that states that pieces of Earth's lithosphere are in slow, constan ...
... Earth's lithosphere is broken into separate sections called plates. The plates fit closely together along cracks in the crust. They carry the continents, or parts of the ocean floor, or both. Plate tectonics is the geological theory that states that pieces of Earth's lithosphere are in slow, constan ...
Essentials of Oceanography, 10e (Trujillo/Keller)
... B) The geographic pole wobbles, but stays near the magnetic pole. C) The geographic poles have reversed themselves periodically through geologic time. D) The location of the magnetic pole is unrelated to the location of the geographic pole. E) The magnetic pole wobbles, but stays near the geographic ...
... B) The geographic pole wobbles, but stays near the magnetic pole. C) The geographic poles have reversed themselves periodically through geologic time. D) The location of the magnetic pole is unrelated to the location of the geographic pole. E) The magnetic pole wobbles, but stays near the geographic ...
Plate Tectonics – Lab
... Could they have, in fact, been connected? During the 19th and early 20th centuries, several geologists explored the idea of moving continents by observing the possible “fit” between Africa and South America. In 1912 Alfred Wegener, a lecturer in astronomy and meteorology, hypothesized that the earth ...
... Could they have, in fact, been connected? During the 19th and early 20th centuries, several geologists explored the idea of moving continents by observing the possible “fit” between Africa and South America. In 1912 Alfred Wegener, a lecturer in astronomy and meteorology, hypothesized that the earth ...
Plate Tectonics Lab - Bakersfield College
... Could they have, in fact, been connected? During the 19th and early 20th centuries, several geologists explored the idea of moving continents by observing the possible “fit” between Africa and South America. In 1912 Alfred Wegener, a lecturer in astronomy and meteorology, hypothesized that the earth ...
... Could they have, in fact, been connected? During the 19th and early 20th centuries, several geologists explored the idea of moving continents by observing the possible “fit” between Africa and South America. In 1912 Alfred Wegener, a lecturer in astronomy and meteorology, hypothesized that the earth ...
Section 17.3 Theory of Plate Tectonics
... 2. Discuss evidence of continental drift. 3. Explain why continental drift was not accepted when it was first proposed. 4. Summarize the evidence that led to the discovery of seafloor spreading. 5. Describe the uses of magnometers and sonar. 6. Explain the significance of magnetic patterns on the se ...
... 2. Discuss evidence of continental drift. 3. Explain why continental drift was not accepted when it was first proposed. 4. Summarize the evidence that led to the discovery of seafloor spreading. 5. Describe the uses of magnometers and sonar. 6. Explain the significance of magnetic patterns on the se ...
STAAR Science Tutorial 38 TEK 8.9A: Plate Tectonic Theory Evidence
... According to the plate tectonic theory, the lithosphere is broken into nine major and many smaller tectonic plates, which float on the denser semi-liquid asthenosphere. Convection currents of thick molten rock in the asthenosphere move the plates slowly over millions of years, opening up gaps that f ...
... According to the plate tectonic theory, the lithosphere is broken into nine major and many smaller tectonic plates, which float on the denser semi-liquid asthenosphere. Convection currents of thick molten rock in the asthenosphere move the plates slowly over millions of years, opening up gaps that f ...
Chapter 3: Earth Structure and Plate Tectonics
... collided, moved apart, and slipped past one another since Earth’s crust first solidified. The confirmation of plate tectonics rests on diverse scientific studies from many disciplines. Among the most convincing is the study of paleomagnetism, the orientation of Earth’s magnetic field frozen into roc ...
... collided, moved apart, and slipped past one another since Earth’s crust first solidified. The confirmation of plate tectonics rests on diverse scientific studies from many disciplines. Among the most convincing is the study of paleomagnetism, the orientation of Earth’s magnetic field frozen into roc ...
Volcanoes and Igneous Activity Earth - Chapter 4
... • Curves for North America and Europe have similar paths but are separated by about 24 of longitude • Differences between the paths can be reconciled if the continents are placed next to one another ...
... • Curves for North America and Europe have similar paths but are separated by about 24 of longitude • Differences between the paths can be reconciled if the continents are placed next to one another ...
TEK 8.9A: Plate Tectonic Theory Evidence
... According to the plate tectonic theory, the lithosphere is broken into nine major and many smaller tectonic plates, which float on the denser semi-liquid asthenosphere. Convection currents of thick molten rock in the asthenosphere move the plates slowly over millions of years, opening up gaps that f ...
... According to the plate tectonic theory, the lithosphere is broken into nine major and many smaller tectonic plates, which float on the denser semi-liquid asthenosphere. Convection currents of thick molten rock in the asthenosphere move the plates slowly over millions of years, opening up gaps that f ...
Chapter 17 Review game
... The old idea was that the seafloor was flat. The sonar showed that it had mountains and trenches (not flat at all!) ...
... The old idea was that the seafloor was flat. The sonar showed that it had mountains and trenches (not flat at all!) ...
Section 17.3 Theory of Plate Tectonics
... 2. Discuss evidence of continental drift. 3. Explain why continental drift was not accepted when it was first proposed. 4. Summarize the evidence that led to the discovery of seafloor spreading. 5. Describe the uses of magnetometers and sonar. 6. Explain the significance of magnetic patterns on the ...
... 2. Discuss evidence of continental drift. 3. Explain why continental drift was not accepted when it was first proposed. 4. Summarize the evidence that led to the discovery of seafloor spreading. 5. Describe the uses of magnetometers and sonar. 6. Explain the significance of magnetic patterns on the ...
Unit Rationale - (Secondary) Teacher
... mathematician and scientist. I have always looked at the world with a sense of wonder and wanting to know more with every question that pops into my head. I want to inspire this interest and questioning nature in my students as it can enrich their lives in many ways. On the practical side promoting ...
... mathematician and scientist. I have always looked at the world with a sense of wonder and wanting to know more with every question that pops into my head. I want to inspire this interest and questioning nature in my students as it can enrich their lives in many ways. On the practical side promoting ...
Slide 1
... liquid in motion. Moving currents generate the magnetic field. This, then, generates more electrical currents. Produces a SELF-EXCITING DYNAMO. ...
... liquid in motion. Moving currents generate the magnetic field. This, then, generates more electrical currents. Produces a SELF-EXCITING DYNAMO. ...
Oceanic Crust
... • Plate boundaries known known as Transform fault occur when two plates grind away at one another. • The San Andreas fault line is an example of a transform fault. ...
... • Plate boundaries known known as Transform fault occur when two plates grind away at one another. • The San Andreas fault line is an example of a transform fault. ...
1 UNIT 10 Plate Tectonics Study Guide Chapters 1, 2, 9, and most of
... - A massive ancient continental glacier must have covered several of these continents at the same time. This could be demonstrated by studying the ancient glacial striations remaining from that glacier. - Paleoclimatic studies of coral reefs imply that certain portions of today’s continents are pre ...
... - A massive ancient continental glacier must have covered several of these continents at the same time. This could be demonstrated by studying the ancient glacial striations remaining from that glacier. - Paleoclimatic studies of coral reefs imply that certain portions of today’s continents are pre ...
Plate Tectonic Theory
... that continents were once joined together in a single large land mass he called Pangea (meaning “all land” in Greek). He proposed that Pangea had split apart and the continents had moved gradually to their present positions - a process that became known as continental drift. ...
... that continents were once joined together in a single large land mass he called Pangea (meaning “all land” in Greek). He proposed that Pangea had split apart and the continents had moved gradually to their present positions - a process that became known as continental drift. ...
Plate Tectonics and Continental Drift lab
... Part E: Seafloor Spreading One test for the sea-floor-spreading hypothesis involves magnetic patterns on the seafloor. In the late 1950's, scientists mapped the present-day magnetic field generated by rocks on the floor of the Pacific Ocean. The volcanic rocks which make up the sea floor have magne ...
... Part E: Seafloor Spreading One test for the sea-floor-spreading hypothesis involves magnetic patterns on the seafloor. In the late 1950's, scientists mapped the present-day magnetic field generated by rocks on the floor of the Pacific Ocean. The volcanic rocks which make up the sea floor have magne ...
Name - WAHS
... point toward the north pole of the Earth. The other group has magnetic minerals with reversed polarity and point toward the south pole. It was known that as lava cools to form basalt, its iron minerals become magnetized and “lock in” the polarity of the Earth’s magnetic field. Beginning in the 1950’ ...
... point toward the north pole of the Earth. The other group has magnetic minerals with reversed polarity and point toward the south pole. It was known that as lava cools to form basalt, its iron minerals become magnetized and “lock in” the polarity of the Earth’s magnetic field. Beginning in the 1950’ ...
10A_InternalEarrthStructTectonics
... Seafloor Spreading • Lack of mechanism for continental drift • 1950s and early 1960s, ocean expedition increased knowledge of oceanography • In 1960s, Harry Hess proposed seafloor spreading – Seafloor not a single static piece – Mid-oceanic ridges, or spreading centers where new crust is formed and ...
... Seafloor Spreading • Lack of mechanism for continental drift • 1950s and early 1960s, ocean expedition increased knowledge of oceanography • In 1960s, Harry Hess proposed seafloor spreading – Seafloor not a single static piece – Mid-oceanic ridges, or spreading centers where new crust is formed and ...
Earth`s Interior and Plate Tectonics
... Plates move because of convection currents in the mantle. Hot material moves up and cool material moves down ...
... Plates move because of convection currents in the mantle. Hot material moves up and cool material moves down ...
Plate Tectonics
... island arc along a trench as two oceanic plates converge. The volcanic islands form as masses of magma reach the seafloor. The Japanese islands were formed in this way. ...
... island arc along a trench as two oceanic plates converge. The volcanic islands form as masses of magma reach the seafloor. The Japanese islands were formed in this way. ...
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.