Plate Tectonic, Earthquakes, and Volcanoes Test Review
... Asthenosphere Mesosphere 4. Who discovered the theory of continental drift? When did he do this? Alfred Wegener (early 1900’s) 5. What are the three pieces of evidence that he used to support his theory? Give examples. 1. Landforms from other continents fit well together like puzzle pieces (South Am ...
... Asthenosphere Mesosphere 4. Who discovered the theory of continental drift? When did he do this? Alfred Wegener (early 1900’s) 5. What are the three pieces of evidence that he used to support his theory? Give examples. 1. Landforms from other continents fit well together like puzzle pieces (South Am ...
Plate Boundaries
... MYP Unit Question: How does land change? Area of Interaction: Environment Learner Profile: Thinker Standard: Investigate the scientific process of how the Earth's surface is made. ...
... MYP Unit Question: How does land change? Area of Interaction: Environment Learner Profile: Thinker Standard: Investigate the scientific process of how the Earth's surface is made. ...
Chapter 3 – Review Book Questions
... record. Earth’s magnetic field has reversed its polarity – North is in the South and South is in the North. Presently the Earth’s magnetic field is pointed north but the last time it pointed south was how many years ago? ____________________________________________________________________________ 37 ...
... record. Earth’s magnetic field has reversed its polarity – North is in the South and South is in the North. Presently the Earth’s magnetic field is pointed north but the last time it pointed south was how many years ago? ____________________________________________________________________________ 37 ...
Plate Boundaries
... denser oceanic crust is pushed down creates volcanic mountains causes earthquakes example: Mt. St. Helens and The Andes ...
... denser oceanic crust is pushed down creates volcanic mountains causes earthquakes example: Mt. St. Helens and The Andes ...
Notes - Plate Tectonics
... causes continents to move. -Powered by the convection currents of magma in the mantle ...
... causes continents to move. -Powered by the convection currents of magma in the mantle ...
Remote Sensing (RS) and Geographic Information Systems (GIS)
... • All major landmasses gather into one supercontinent • Remaining 70% of Earth’s surface is one super-ocean ...
... • All major landmasses gather into one supercontinent • Remaining 70% of Earth’s surface is one super-ocean ...
Chapter 9: Our Living Earth PowerPoint print-off
... • Place of maximum surface shaking • Place directly above the focus The focus is also called the hypocenter ...
... • Place of maximum surface shaking • Place directly above the focus The focus is also called the hypocenter ...
Chapter 10 study guide
... sea-floor spreading – the process where molten material (magma) rises from the mantle and erupts along the mid-ocean ridge. During sea-floor spreading a new ocean lithosphere forms. Scientists believe that sea-floor spreading provides a way for the continents to move over Earth’s surface. Paleomagn ...
... sea-floor spreading – the process where molten material (magma) rises from the mantle and erupts along the mid-ocean ridge. During sea-floor spreading a new ocean lithosphere forms. Scientists believe that sea-floor spreading provides a way for the continents to move over Earth’s surface. Paleomagn ...
Essentials of Geology Plate Tectonics: A Unifying Theory
... • Mountain ranges are formed in the interior of a new and larger • ...
... • Mountain ranges are formed in the interior of a new and larger • ...
Plate Tectonics
... Earths crust is not a uniform covering, its made of 8 major and minor plates – North American/Pacific/Juan de Fuca plate As these plates move, the continents are rafted along passively (like a piggyback ride on top of Aesthenosphere, which is on top of the mantle 1960’s the Theory of Continental Dri ...
... Earths crust is not a uniform covering, its made of 8 major and minor plates – North American/Pacific/Juan de Fuca plate As these plates move, the continents are rafted along passively (like a piggyback ride on top of Aesthenosphere, which is on top of the mantle 1960’s the Theory of Continental Dri ...
PLATE TECTONICS
... • Apparent motion of north magnetic pole through time Split in path indicates continents split apart Recent Evidence for Continental Drift • Fitting continents at continental slope rather than shoreline • Refined matches of rocks between continents • Isotopic ages support matches • Glacial evidence ...
... • Apparent motion of north magnetic pole through time Split in path indicates continents split apart Recent Evidence for Continental Drift • Fitting continents at continental slope rather than shoreline • Refined matches of rocks between continents • Isotopic ages support matches • Glacial evidence ...
1-2 Notes: Continental Drift Continents Join Together and Split Apart
... There are ____ main kinds of evidence for continental drift: fossils, climate, and geology. Fossils Mesosaurus is an ancient reptile whose fossils are found ONLY in South America and Western _____________________. There are many other fossils found around the world that support the theory of c ...
... There are ____ main kinds of evidence for continental drift: fossils, climate, and geology. Fossils Mesosaurus is an ancient reptile whose fossils are found ONLY in South America and Western _____________________. There are many other fossils found around the world that support the theory of c ...
Geology Chapter 7 Study Guide with lines
... 1. CONVERGENT PLATE BOUNDARY ____________________________________ ________________________________________________________________________ 2. DIVERGENT PLATE BOUNDARY ______________________________________ ________________________________________________________________________ ...
... 1. CONVERGENT PLATE BOUNDARY ____________________________________ ________________________________________________________________________ 2. DIVERGENT PLATE BOUNDARY ______________________________________ ________________________________________________________________________ ...
Continental Drift and Plate Tectonics Notes
... It appears that mountain ranges end abruptly on one continent and pick back up on another. Even the layers of rocks within these mountains match up – evidence that they used to be part of the same mountain range before the continents split. ...
... It appears that mountain ranges end abruptly on one continent and pick back up on another. Even the layers of rocks within these mountains match up – evidence that they used to be part of the same mountain range before the continents split. ...
Introduction to Plate Tectonic Theory, Geodesy, and VLBI
... large continent that broke apart, and drifted through the ocean floor to where they are now. Wegener was first influenced by how the continents fit together, especially western Africa and eastern South America. When he compared the rock structures and composition of the coastlines of the continents ...
... large continent that broke apart, and drifted through the ocean floor to where they are now. Wegener was first influenced by how the continents fit together, especially western Africa and eastern South America. When he compared the rock structures and composition of the coastlines of the continents ...
Continental - itslearning
... long chains of islands that seem to have been made one at a time in order. The Hawaiian chain is an example of one of these. ...
... long chains of islands that seem to have been made one at a time in order. The Hawaiian chain is an example of one of these. ...
Seafloor Spreading
... Earth. It cools as it rises, and some of it solidifies before it reaches the surface. Some molten rock spills out into the surface, solidifying and forming volcanoes at the mid-ocean ridges. This new rock is pulled apart at mid-ocean ridges, forming two rock masses that slowly move away from each ot ...
... Earth. It cools as it rises, and some of it solidifies before it reaches the surface. Some molten rock spills out into the surface, solidifying and forming volcanoes at the mid-ocean ridges. This new rock is pulled apart at mid-ocean ridges, forming two rock masses that slowly move away from each ot ...
Sea Floor Spreading
... In 1957 a map by Heezen and Thorp showed symmetry in Mid Atlantic Ridge In 1960 geologists Harry Hess and Robert Diaz speculated that new sea floor was being created at the mid-Atlantic Ridge and destroyed elsewhere ...
... In 1957 a map by Heezen and Thorp showed symmetry in Mid Atlantic Ridge In 1960 geologists Harry Hess and Robert Diaz speculated that new sea floor was being created at the mid-Atlantic Ridge and destroyed elsewhere ...
High School Science Proficiency Review #3 Earth Science
... Both locations have the same magnetic orientation. B. The basalts at location X and Y are the same age. Both locations have the same magnetic orientation. C. The basalt at location X and Y are the same age. Location X has normal magnetic orientation and location Y has reversed mag‐ netic orien ...
... Both locations have the same magnetic orientation. B. The basalts at location X and Y are the same age. Both locations have the same magnetic orientation. C. The basalt at location X and Y are the same age. Location X has normal magnetic orientation and location Y has reversed mag‐ netic orien ...
Lecture PDF
... 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 ...
Continental Drift and Sea Floor Spreading
... • The magnetic records for the seafloor on either side of the mid-ocean ridges matched perfectly showing that the seafloor was growing outward from the ridges in both directions ...
... • The magnetic records for the seafloor on either side of the mid-ocean ridges matched perfectly showing that the seafloor was growing outward from the ridges in both directions ...
Plate Tectonics 2
... Geophysical evidence for “the new global tectonics” (1960’s): magnetic stripes on the seafloor ...
... Geophysical evidence for “the new global tectonics” (1960’s): magnetic stripes on the seafloor ...
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.