1. Earth`s plates are made up of the crust and the upper mantle
... 6. Alfred Wegener, who proposed the theory of continental drift, was highly criticized for not adequately explaining the mechanism by which the continents supposedly moved. Which two pieces of explanation did Wegener offer? a) That the continents were not firmly attached to Earth's crust but floated ...
... 6. Alfred Wegener, who proposed the theory of continental drift, was highly criticized for not adequately explaining the mechanism by which the continents supposedly moved. Which two pieces of explanation did Wegener offer? a) That the continents were not firmly attached to Earth's crust but floated ...
Continents Adrift: An Introduction to Continental Drift and Plate
... Directions: Answer the following questions in complete sentences as you watch the video. You may want to jot down notes from the video and then answer the questions in complete sentences. 1. What evidence did Alfred Wegener offer to support his theory of continental drift? ...
... Directions: Answer the following questions in complete sentences as you watch the video. You may want to jot down notes from the video and then answer the questions in complete sentences. 1. What evidence did Alfred Wegener offer to support his theory of continental drift? ...
As the continental shelf gets steeper the water depth
... continents of the world were once joined together, making one supercontinent, which he named Pangaea. He realized that rock formations located on either side of the Atlantic Ocean were identical in age, structure and type. There were also fossils of the same creatures found in both rock formations. ...
... continents of the world were once joined together, making one supercontinent, which he named Pangaea. He realized that rock formations located on either side of the Atlantic Ocean were identical in age, structure and type. There were also fossils of the same creatures found in both rock formations. ...
Plate Tectonics Notes
... -He noticed that the mountain ranges on the continents of Africa and South America line up. 2. Fossils: -Fossils-trace of an ancient organisms that has been preserved in rock. -Dinosaur fossils have been found in landmasses separated by oceans. 3. Climate: -Evidence of tropical plants has been found ...
... -He noticed that the mountain ranges on the continents of Africa and South America line up. 2. Fossils: -Fossils-trace of an ancient organisms that has been preserved in rock. -Dinosaur fossils have been found in landmasses separated by oceans. 3. Climate: -Evidence of tropical plants has been found ...
Continental drift script (version 2) File
... and Australia while those of Mesosaurus have been found in Western countries of Africa and Brazil. Fossils of predecessors of Ostriches, which are prominently found in Africa, have been found in India. Similarly, paleontologists have found fossils of primitive marsupials in western India. In present ...
... and Australia while those of Mesosaurus have been found in Western countries of Africa and Brazil. Fossils of predecessors of Ostriches, which are prominently found in Africa, have been found in India. Similarly, paleontologists have found fossils of primitive marsupials in western India. In present ...
No Slide Title - Erdkinder.net
... moves upward and flows from the cracks. It becomes solid as it cools and forms new seafloor. As new seafloor moves away from the ridge, it cools, contracts, and becomes denser than the material below it. This dense, colder seafloor begins to sink, helping to form the mid-ocean ridge. Click on screen ...
... moves upward and flows from the cracks. It becomes solid as it cools and forms new seafloor. As new seafloor moves away from the ridge, it cools, contracts, and becomes denser than the material below it. This dense, colder seafloor begins to sink, helping to form the mid-ocean ridge. Click on screen ...
Unit 3: Plate Tectonics Slideshow REGENTS
... AUSTRALIA indicate that portions of these continents must have been CONNECTED in polar regions far from their present positions. ...
... AUSTRALIA indicate that portions of these continents must have been CONNECTED in polar regions far from their present positions. ...
CH. 15 CONCEPT CHECKS
... 3. Describe how Fred Vine and D. H. Matthews related the seafloor-spreading hypothesis to magnetic reversals. ...
... 3. Describe how Fred Vine and D. H. Matthews related the seafloor-spreading hypothesis to magnetic reversals. ...
Restless Continents
... • Wegener’s hypothesis was rejected at first • Scientists rejected it because from the calculated strength of rocks it did not seem possible for the crust to move this way. • It was not until many years after Wegener’s death that evidence provided clues that forces moved the continents. ...
... • Wegener’s hypothesis was rejected at first • Scientists rejected it because from the calculated strength of rocks it did not seem possible for the crust to move this way. • It was not until many years after Wegener’s death that evidence provided clues that forces moved the continents. ...
Plates of the Lithosphere - Cal State LA
... – Giant supercontinent of the Paleozoic and Mesozoic eras ...
... – Giant supercontinent of the Paleozoic and Mesozoic eras ...
Earth`s Structure and Tectonics Overview 2014
... 9. As more molten material rises and hardens, it forces the sea floor to move apart. This process is called _______________ ____________________ ______________________. 10. Sea floor spreading (at divergent boundary points A, B, D) results in the creation of new crust. However, the Earth’s total sur ...
... 9. As more molten material rises and hardens, it forces the sea floor to move apart. This process is called _______________ ____________________ ______________________. 10. Sea floor spreading (at divergent boundary points A, B, D) results in the creation of new crust. However, the Earth’s total sur ...
Slide 1
... Glacial evidence is found in South America and Africa. Regions that today are far to warm for glaciers. Fossil evidence shows that tropical and subtropical swamps and forests existed in areas like Michigan that are too cold for such features today. Wegener theorized that if the continents were conne ...
... Glacial evidence is found in South America and Africa. Regions that today are far to warm for glaciers. Fossil evidence shows that tropical and subtropical swamps and forests existed in areas like Michigan that are too cold for such features today. Wegener theorized that if the continents were conne ...
Ch.2 Tectonics
... continents. Beneath the ocean, there are continental shelfs & slopes, deep sea basins, seamounts, deep trenches and high mountain ridges. We also know that Earth is dynamic and earthquakes and volcano ...
... continents. Beneath the ocean, there are continental shelfs & slopes, deep sea basins, seamounts, deep trenches and high mountain ridges. We also know that Earth is dynamic and earthquakes and volcano ...
Continental Drift Hypothesis - states that the continents had once
... Continental Rifts - When spreading centers develop within a continent, the landmass may split into two or more smaller segments. Subduction zone - when one oceanic plate is forced down into the mantle beneath a second plate. ...
... Continental Rifts - When spreading centers develop within a continent, the landmass may split into two or more smaller segments. Subduction zone - when one oceanic plate is forced down into the mantle beneath a second plate. ...
Ice Age: Continental Drift
... Consider the shapes of South America and Africa. Without the Atlantic Ocean between them, the eastern edge of the American continent could snuggle neatly under the bump of western Africa. More research revealed other peculiarities. For example, on the shores of both South America and South Africa, s ...
... Consider the shapes of South America and Africa. Without the Atlantic Ocean between them, the eastern edge of the American continent could snuggle neatly under the bump of western Africa. More research revealed other peculiarities. For example, on the shores of both South America and South Africa, s ...
Evidence of continental drift
... means “all the earth” in Greek. Pangaea broke up 200 mya. The northern half of Pangaea was referred to as Laurasia and the southern portion is known as Gondwanaland. ...
... means “all the earth” in Greek. Pangaea broke up 200 mya. The northern half of Pangaea was referred to as Laurasia and the southern portion is known as Gondwanaland. ...
Essay- choose ONE
... ___The theory that states all continents were once a part of one giant landmass, split apart and slowly moved to there present positions. ___The theory that Earth’s crust and upper mantle is broken up into sections. ___The process that explains how continents move and where new crust is made. ...
... ___The theory that states all continents were once a part of one giant landmass, split apart and slowly moved to there present positions. ___The theory that Earth’s crust and upper mantle is broken up into sections. ___The process that explains how continents move and where new crust is made. ...
KS3 Russia
... Geologist estimate these mountains erupted 250 million years ago as one immense continent called the Euramerican continent powerfully collided with the smaller continent named Kazakhstania. After nearly 90 million years of one continent pushing vigorously against the other, majestic mountain peaks w ...
... Geologist estimate these mountains erupted 250 million years ago as one immense continent called the Euramerican continent powerfully collided with the smaller continent named Kazakhstania. After nearly 90 million years of one continent pushing vigorously against the other, majestic mountain peaks w ...
Plate Tectonics Journey to the center of the Earth
... The Crust (p. 128) 10. The _____________________ is the layer of rock that forms Earth’s skin. 11. The crust is _________________ under mountains and ________________ beneath the oceans. 12. Dark-colored rock that makes up most of the oceanic crust is _______________. 13. Light-colored rock that mak ...
... The Crust (p. 128) 10. The _____________________ is the layer of rock that forms Earth’s skin. 11. The crust is _________________ under mountains and ________________ beneath the oceans. 12. Dark-colored rock that makes up most of the oceanic crust is _______________. 13. Light-colored rock that mak ...
msword - rgs.org
... Geologist estimate these mountains erupted 250 million years ago as one immense continent called the Euramerican continent powerfully collided with the smaller continent named Kazakhstania. After nearly 90 million years of one continent pushing vigorously against the other, majestic mountain peaks w ...
... Geologist estimate these mountains erupted 250 million years ago as one immense continent called the Euramerican continent powerfully collided with the smaller continent named Kazakhstania. After nearly 90 million years of one continent pushing vigorously against the other, majestic mountain peaks w ...
Chapter 33
... Shrinking Earth Theory • Believed that the cooling of the planet resulted in its contraction. • Sea Floor spreading video http://www.iteachbio.com/Earth_Science/Earth _Science/earth.htm ...
... Shrinking Earth Theory • Believed that the cooling of the planet resulted in its contraction. • Sea Floor spreading video http://www.iteachbio.com/Earth_Science/Earth _Science/earth.htm ...
Word Doc for Cont. Drift and Plate Tect.
... GEOLOGICAL SEQUENCES - A number of continents show evidence of matching geological sequences with rocks of simillar age, type, formation and structure occuring in different countries - e.g. the Appalachians (E USA) show a geological match with mountains in NW Europe and if they were fitted together ...
... GEOLOGICAL SEQUENCES - A number of continents show evidence of matching geological sequences with rocks of simillar age, type, formation and structure occuring in different countries - e.g. the Appalachians (E USA) show a geological match with mountains in NW Europe and if they were fitted together ...
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.