Chapter 7:2 pages 198-201
... B. Mid-Ocean Ridges and Sea-Floor Spreading 1. A chain of submerged mountains runs through the center of the Atlantic Ocean…It is part of a worldwide system of mid-ocean ridges that are underwater mountain chains that run through Earth’s ocean basins. ...
... B. Mid-Ocean Ridges and Sea-Floor Spreading 1. A chain of submerged mountains runs through the center of the Atlantic Ocean…It is part of a worldwide system of mid-ocean ridges that are underwater mountain chains that run through Earth’s ocean basins. ...
5. I can evaluate Alfred Wegner`s theory of continental drift based on
... What kinds of fossils would not be evidence for continental drift? Ocean animal fossils, or fossils found on the same continent. ...
... What kinds of fossils would not be evidence for continental drift? Ocean animal fossils, or fossils found on the same continent. ...
Geologic Time Webquest - Peoria Public Schools
... End of this period marked by the largest what? What kind of plants are on the scene at this time? Define this type of plant Carboniferous What evolutionary innovation occurred here? Why is this important? What do we find large deposits of during this time period? Devonian, What three types of plants ...
... End of this period marked by the largest what? What kind of plants are on the scene at this time? Define this type of plant Carboniferous What evolutionary innovation occurred here? Why is this important? What do we find large deposits of during this time period? Devonian, What three types of plants ...
Plate Tectonics Inside Earth Chapter 1 Study
... Destructive forces are those that slowly wear away the mountains and, eventually, every other feature on the surface. 2) List 2 facts about each of the layers of Earth. 1. The Crust- 5-40 kilometers thick a. The crust is a layer of rock that forms Earth’s outer skin. b. it includes both the dry la ...
... Destructive forces are those that slowly wear away the mountains and, eventually, every other feature on the surface. 2) List 2 facts about each of the layers of Earth. 1. The Crust- 5-40 kilometers thick a. The crust is a layer of rock that forms Earth’s outer skin. b. it includes both the dry la ...
Tectonics of the Precambrian
... • Since then, these rocks have been metamorphosed, but the original rock is easily inferred ...
... • Since then, these rocks have been metamorphosed, but the original rock is easily inferred ...
Plate Tectonics
... • The rocks in the mountains are of the same age and type, and fit together like a puzzle. ...
... • The rocks in the mountains are of the same age and type, and fit together like a puzzle. ...
Seismix2003
... together with the rapid asthenospheric mantle temperature variations that accompany interaction of a mantle plume with the onset of continental rifting, cause rapid uplift and subsidence anomalies on the margin. The new seismic data enables us to image both the shallow basalt flows and the lower-cru ...
... together with the rapid asthenospheric mantle temperature variations that accompany interaction of a mantle plume with the onset of continental rifting, cause rapid uplift and subsidence anomalies on the margin. The new seismic data enables us to image both the shallow basalt flows and the lower-cru ...
Continental drift: An idea before its time Pangaea approximately 200
... Plate Tectonic Theory arose as an explanation of all the data used to propose the (incomplete) hypotheses of continental drift and sea floor spreading. ...
... Plate Tectonic Theory arose as an explanation of all the data used to propose the (incomplete) hypotheses of continental drift and sea floor spreading. ...
7-2 Restless continents
... 2. According to Wegener, how many landmasses did all continents once form? ______ 3.______What did Wegener hypothesize happened to the continents? a. They broke up and re-formed. b. They drifted together to form a single continent. c. They broke up and drifted to their current locations. d. They san ...
... 2. According to Wegener, how many landmasses did all continents once form? ______ 3.______What did Wegener hypothesize happened to the continents? a. They broke up and re-formed. b. They drifted together to form a single continent. c. They broke up and drifted to their current locations. d. They san ...
Continental Drift - Imaginique Bengals
... Glacial till of the same age is found in southern Africa, South America, India and Australia — areas that it would be very difficult to explain the occurrence of glaciation. At the same time, large coal deposits were formed from tropical swamps in N. America and Europe. Pangaea with S. Africa center ...
... Glacial till of the same age is found in southern Africa, South America, India and Australia — areas that it would be very difficult to explain the occurrence of glaciation. At the same time, large coal deposits were formed from tropical swamps in N. America and Europe. Pangaea with S. Africa center ...
The Initial Break Up
... Mountain Ranges Match • Parts of Appalachian Mountains are found in Greenland and Western Europe. ...
... Mountain Ranges Match • Parts of Appalachian Mountains are found in Greenland and Western Europe. ...
Theory Development
... fault or other body of rock cuts through another body of rock, then it must be younger in age than the rock through which it cuts and displaces. ...
... fault or other body of rock cuts through another body of rock, then it must be younger in age than the rock through which it cuts and displaces. ...
Chapter 12-1 Earth`s Drifting Continents
... Chapter 12-1 Earth’s Drifting Continents. AKA “The proper way to answer these questions.” 1. Why is the theory of a “land bridge” unlikely? The theory of a land bridge between South America and Africa is not possible because I know that continental crust is less dense than oceanic crust, but more de ...
... Chapter 12-1 Earth’s Drifting Continents. AKA “The proper way to answer these questions.” 1. Why is the theory of a “land bridge” unlikely? The theory of a land bridge between South America and Africa is not possible because I know that continental crust is less dense than oceanic crust, but more de ...
Plate Tectonics and Sea Floor Spreading
... plates that are mostly under the oceans. Plate tectonics show us powerful forces at work within the earth. These forces cause earthquakes to happen, volcanoes to erupt, and mountains to form. People cannot control these powerful forces, but we can learn a lot from them. ...
... plates that are mostly under the oceans. Plate tectonics show us powerful forces at work within the earth. These forces cause earthquakes to happen, volcanoes to erupt, and mountains to form. People cannot control these powerful forces, but we can learn a lot from them. ...
Plate Tectonic Theory
... South America and Africa, which are now widely separated by the Atlantic Ocean. He reasoned that it was physically impossible for most of these organisms to have swum or have been transported across the vast oceans. To him, the presence of identical fossil species along the coastal parts of Africa ...
... South America and Africa, which are now widely separated by the Atlantic Ocean. He reasoned that it was physically impossible for most of these organisms to have swum or have been transported across the vast oceans. To him, the presence of identical fossil species along the coastal parts of Africa ...
Plate Tectonic Theory
... South America and Africa, which are now widely separated by the Atlantic Ocean. He reasoned that it was physically impossible for most of these organisms to have swum or have been transported across the vast oceans. To him, the presence of identical fossil species along the coastal parts of Africa ...
... South America and Africa, which are now widely separated by the Atlantic Ocean. He reasoned that it was physically impossible for most of these organisms to have swum or have been transported across the vast oceans. To him, the presence of identical fossil species along the coastal parts of Africa ...
Plate Tectonics
... • It is the movement of plates and the forces acting between them. • It explains the distribution of volcanoes, earthquakes, folded mountain chains, rock assemblages, and seafloor structures. • The forces that drive plate motions arise from the mantle convection system. ...
... • It is the movement of plates and the forces acting between them. • It explains the distribution of volcanoes, earthquakes, folded mountain chains, rock assemblages, and seafloor structures. • The forces that drive plate motions arise from the mantle convection system. ...
Plate Tectonics
... The dominant tree of the southern hemisphere during the early Triassic (250 MYA). Fossil ferns with seeds too big to blow across an ocean have been found in Africa, South America, India, Australia and Antarctica.. ...
... The dominant tree of the southern hemisphere during the early Triassic (250 MYA). Fossil ferns with seeds too big to blow across an ocean have been found in Africa, South America, India, Australia and Antarctica.. ...
File
... Evidence Supporting Continental Drift The Earth's crust is constantly moving, both vertically and horizontally, at rates of up to several inches a year. A widely-held theory that explains these movements is called "plate tectonics." It was developed in the mid 1960s by geophysicists. The term "plate ...
... Evidence Supporting Continental Drift The Earth's crust is constantly moving, both vertically and horizontally, at rates of up to several inches a year. A widely-held theory that explains these movements is called "plate tectonics." It was developed in the mid 1960s by geophysicists. The term "plate ...
deep-ocean trench
... Wegener’s day (early 1900’s) not accept his theory? He could not provide the force that caused the continents to move. They felt it would have been impossible for huge solid chunks of land to have plowed through the ocean floor. ...
... Wegener’s day (early 1900’s) not accept his theory? He could not provide the force that caused the continents to move. They felt it would have been impossible for huge solid chunks of land to have plowed through the ocean floor. ...
File - Down To Earth Science
... continents had moved! He proposed that all the continents had once been joined together in a single landmass and have since drifted apart. ...
... continents had moved! He proposed that all the continents had once been joined together in a single landmass and have since drifted apart. ...
Plate Tectonic Quiz Review
... • Heat transfers by movement of currents in liquids and gasses. This is caused by differences in temperature and density. An example of this type of heat transfer occurs when mantle rock moves from near the core, towards the crust, and back again. A. Radiation B. Conduction C. Convection D. Compact ...
... • Heat transfers by movement of currents in liquids and gasses. This is caused by differences in temperature and density. An example of this type of heat transfer occurs when mantle rock moves from near the core, towards the crust, and back again. A. Radiation B. Conduction C. Convection D. Compact ...
5-Continental Drift and Plate Tectonics
... mechanism for moving the continents. • He thought the force of Earth's spin was sufficient to cause continents to move, but geologists knew that rocks are too strong for this to be true. • Wegener thought that the continents were moving through the earth's crust, like icebreakers plowing through sea ...
... mechanism for moving the continents. • He thought the force of Earth's spin was sufficient to cause continents to move, but geologists knew that rocks are too strong for this to be true. • Wegener thought that the continents were moving through the earth's crust, like icebreakers plowing through sea ...
Continental Drift
... from this and other observations that all the present “southern continents” (including India, the Arabian Peninsula, and other parts of southern Asia) were once joined as one “supercontinent” that he dubbed “Gondwanaland” (from a region of India). The Upper Carboniferous coal measures and Permian re ...
... from this and other observations that all the present “southern continents” (including India, the Arabian Peninsula, and other parts of southern Asia) were once joined as one “supercontinent” that he dubbed “Gondwanaland” (from a region of India). The Upper Carboniferous coal measures and Permian re ...
Supercontinent
In geology, a supercontinent is the assembly of most or all of the Earth's continental blocks or cratons to form a single large landmass. However, the definition of a supercontinent can be ambiguous. Many tectonicists such as P.F. Hoffman (1999) use the term ""supercontinent"" to mean ""a clustering of nearly all continents"". This definition leaves room for interpretation when labeling a continental body and is easier to apply to Precambrian times. Using the first definition provided here, Gondwana (aka Gondwanaland) is not considered a supercontinent, because the landmasses of Baltica, Laurentia and Siberia also existed at the same time but physically separate from each other. The landmass of Pangaea is the collective name describing all of these continental masses when they were in a close proximity to one another. This would classify Pangaea as a supercontinent. According to the definition by Rogers and Santosh (2004), a supercontinent does not exist today. Supercontinents have assembled and dispersed multiple times in the geologic past (see table). The positions of continents have been accurately determined back to the early Jurassic. However, beyond 200 Ma, continental positions are much less certain.