Continental Drift Theory
•Download as PPT, PDF•
1 like•834 views
Alfred Wegener was a German scientist who first proposed the theory of continental drift in the early 1900s. He provided evidence from matching landforms, fossil records, and historical climate patterns between continents. Harry Hess later expanded on this theory by proposing sea floor spreading, the process by which new crust is formed at mid-ocean ridges and pushes continents apart over geologic timescales.
Report
Share
Report
Share
![Alfred Wegener ,[object Object],[object Object],[object Object],[object Object],[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Recommended
Continental+Drift+Theory+Template
The document discusses Alfred Wegener's continental drift theory from 1905. It proposes that the continents were once joined together in a supercontinent called Pangaea before drifting apart. Evidence for the theory includes matching coastlines, matching fossil distributions found on different continents, and climate evidence from Spitsbergen. Harry Hess later contributed to the theory of sea floor spreading, which helped explain continental drift. Sea floor spreading is evidenced by magnetic stripes on the ocean floor, the age of the sea floor increasing with distance from mid-ocean ridges, and the shapes of ocean basins.
A Lfred Wegener
Alfred Wegener was the first scientist to propose the theory of continental drift, which suggests that the continents were once joined together in a supercontinent called Pangaea. He developed this idea after discovering that fossils of the same ancient plant species were found on separate continents. Further evidence for Pangaea and continental drift was that the coastlines of Africa and South America fit together like puzzle pieces. Wegener's theories were controversial at the time but are now widely accepted, making him the founding father of a major scientific revolution in earth sciences.
Alfred Wegener, by Telma
In Sciences, my 7th graders were asked to present a PPt on "My Scientist". Each chose a different scientist (except Telma) and then their teacher of English took it one step further and asked them to do the same in English! Here is the result :) Alfred Wegener, by Telma
Continental Drift Andie
Alfred Wegener first proposed the theory of continental drift in the early 20th century, which suggested that the continents were once joined together and have since drifted apart. Wegener provided three main pieces of evidence to support this theory: geological evidence from rock layers across continents, fossil evidence from the distribution of fossils, and climate evidence from changing climates in the past. However, Wegener's theory was rejected by scientists during his lifetime because he could not explain the force that causes the continents to move.
Drifting continents powerpoint
Alfred Wegener proposed the theory of continental drift, which stated that the Earth's continents were once joined together in a supercontinent called Pangea before slowly drifting apart over hundreds of millions of years. Wegener supported this theory with three types of evidence: matching landforms between continents, fossils of the same plants and animals found on separated continents, and evidence that climates had changed in ways consistent with continental movement rather than climate change alone. This evidence convinced many of the accuracy of Wegener's theory of continental drift.
Continental Drift Notes - Jenny
Alfred Wegener first proposed the theory of continental drift in 1915, suggesting that the continents were once joined together in a single landmass called Pangaea that has since drifted apart. Wegener provided evidence from matching coastlines, fossil distributions, and climate patterns from over 250 million years ago to support his hypothesis. However, his theory was rejected by the scientific community at the time due to the lack of a proposed mechanism for continental movement and because it contradicted established ideas about mountain formation and Earth's cooling history. Continental drift was not widely accepted until new evidence emerged in the 1950s.
Continental Drift Theory by Rajkumar
1. CONTINENTAL DRIFT
“Father” of this theory is Alfred Wegener.
2. The Theory of Continental Drift
Proposed by Alfred Wegener (1912):-
A large super-continent PANGEA split into smaller fragments about 200-300 million years ago. These then drifted apart to form the present arrangement of continents.
Most geologists were highly skeptical and the idea was NOT widely accepted.
3. This is what Wegener thought Pangea looked like 200-300 million years ago.
4. EVIDENCE OF CONTINENTAL DRIFT
Wegener provided four main pieces of evidence to support his theory that the continents had been drifting over time.
5. 1. JIGSAW PUZZLE
Wegener noticed that if we could move present day continents around, several continents look like they would fit together like pieces of a jigsaw puzzle.
6. 2. FOSSILS
Wegener also found fossils of the same plants and animals on different continents now separated by vast oceans. They could only be found this way if the continents had once been joined together.
7. 3. ROCK SEQUENCE
Wegener also found that mountain ranges have a similar sequence of type of rock and age on both sides of the Atlantic Ocean, suggesting they were once part of the same mountain range.
8. 4. GLACIAL SCARS
Wegener found evidence of glacial scars left behind by giant ice sheets from the same time period in Southern Africa, India, Australia and South America.
The white areas were covered by ice and tundra about 300 million years ago (arrows show the direction of ice movement).
the continents were once part of a single larger continent that then split apart, drifting to their present positions over the last 300 million years.
9. WHAT COULD MOVE THE CONTINENTS?
Unfortunately for Wegener, he could not explain what force was powerful enough to move entire continents around the planet.
For reasons was he can't explain
Alfred Wegener died on expedition in Greenland in 1930 still searching for answers to the question of what force could be responsible for the movement of the continents.
10. Reason for Support Continental Drift?
Fit of continents
Apparent discrepancy in inferred latitudes of ancient rocks
Rocks of same age and similar characteristics on different continents
Distribution of similar plants and animals on different continents
11. WEGENERS CONCLUSIONS:
The continents have drifted over the past 300 million
years to their present positions!
(not a very popular idea at the time!!!)
Continental drift notes
- Alfred Wegener proposed the theory of continental drift, suggesting that continents had once been joined together in a single landmass called Pangaea before drifting apart. However, he could not provide a satisfactory explanation for the force driving the drift.
- Evidence from matching landforms, fossil distributions, and climate clues in rock strata provided growing support for continental drift, but it took decades for most geologists to accept the theory.
- Convection currents in the Earth's mantle, driven by heat from the core, cause the crust and tectonic plates to slowly move over time, allowing for continental drift. This theory of plate tectonics eventually replaced continental drift as the explanation for drifting continents.
Recommended
Continental+Drift+Theory+Template
The document discusses Alfred Wegener's continental drift theory from 1905. It proposes that the continents were once joined together in a supercontinent called Pangaea before drifting apart. Evidence for the theory includes matching coastlines, matching fossil distributions found on different continents, and climate evidence from Spitsbergen. Harry Hess later contributed to the theory of sea floor spreading, which helped explain continental drift. Sea floor spreading is evidenced by magnetic stripes on the ocean floor, the age of the sea floor increasing with distance from mid-ocean ridges, and the shapes of ocean basins.
A Lfred Wegener
Alfred Wegener was the first scientist to propose the theory of continental drift, which suggests that the continents were once joined together in a supercontinent called Pangaea. He developed this idea after discovering that fossils of the same ancient plant species were found on separate continents. Further evidence for Pangaea and continental drift was that the coastlines of Africa and South America fit together like puzzle pieces. Wegener's theories were controversial at the time but are now widely accepted, making him the founding father of a major scientific revolution in earth sciences.
Alfred Wegener, by Telma
In Sciences, my 7th graders were asked to present a PPt on "My Scientist". Each chose a different scientist (except Telma) and then their teacher of English took it one step further and asked them to do the same in English! Here is the result :) Alfred Wegener, by Telma
Continental Drift Andie
Alfred Wegener first proposed the theory of continental drift in the early 20th century, which suggested that the continents were once joined together and have since drifted apart. Wegener provided three main pieces of evidence to support this theory: geological evidence from rock layers across continents, fossil evidence from the distribution of fossils, and climate evidence from changing climates in the past. However, Wegener's theory was rejected by scientists during his lifetime because he could not explain the force that causes the continents to move.
Drifting continents powerpoint
Alfred Wegener proposed the theory of continental drift, which stated that the Earth's continents were once joined together in a supercontinent called Pangea before slowly drifting apart over hundreds of millions of years. Wegener supported this theory with three types of evidence: matching landforms between continents, fossils of the same plants and animals found on separated continents, and evidence that climates had changed in ways consistent with continental movement rather than climate change alone. This evidence convinced many of the accuracy of Wegener's theory of continental drift.
Continental Drift Notes - Jenny
Alfred Wegener first proposed the theory of continental drift in 1915, suggesting that the continents were once joined together in a single landmass called Pangaea that has since drifted apart. Wegener provided evidence from matching coastlines, fossil distributions, and climate patterns from over 250 million years ago to support his hypothesis. However, his theory was rejected by the scientific community at the time due to the lack of a proposed mechanism for continental movement and because it contradicted established ideas about mountain formation and Earth's cooling history. Continental drift was not widely accepted until new evidence emerged in the 1950s.
Continental Drift Theory by Rajkumar
1. CONTINENTAL DRIFT
“Father” of this theory is Alfred Wegener.
2. The Theory of Continental Drift
Proposed by Alfred Wegener (1912):-
A large super-continent PANGEA split into smaller fragments about 200-300 million years ago. These then drifted apart to form the present arrangement of continents.
Most geologists were highly skeptical and the idea was NOT widely accepted.
3. This is what Wegener thought Pangea looked like 200-300 million years ago.
4. EVIDENCE OF CONTINENTAL DRIFT
Wegener provided four main pieces of evidence to support his theory that the continents had been drifting over time.
5. 1. JIGSAW PUZZLE
Wegener noticed that if we could move present day continents around, several continents look like they would fit together like pieces of a jigsaw puzzle.
6. 2. FOSSILS
Wegener also found fossils of the same plants and animals on different continents now separated by vast oceans. They could only be found this way if the continents had once been joined together.
7. 3. ROCK SEQUENCE
Wegener also found that mountain ranges have a similar sequence of type of rock and age on both sides of the Atlantic Ocean, suggesting they were once part of the same mountain range.
8. 4. GLACIAL SCARS
Wegener found evidence of glacial scars left behind by giant ice sheets from the same time period in Southern Africa, India, Australia and South America.
The white areas were covered by ice and tundra about 300 million years ago (arrows show the direction of ice movement).
the continents were once part of a single larger continent that then split apart, drifting to their present positions over the last 300 million years.
9. WHAT COULD MOVE THE CONTINENTS?
Unfortunately for Wegener, he could not explain what force was powerful enough to move entire continents around the planet.
For reasons was he can't explain
Alfred Wegener died on expedition in Greenland in 1930 still searching for answers to the question of what force could be responsible for the movement of the continents.
10. Reason for Support Continental Drift?
Fit of continents
Apparent discrepancy in inferred latitudes of ancient rocks
Rocks of same age and similar characteristics on different continents
Distribution of similar plants and animals on different continents
11. WEGENERS CONCLUSIONS:
The continents have drifted over the past 300 million
years to their present positions!
(not a very popular idea at the time!!!)
Continental drift notes
- Alfred Wegener proposed the theory of continental drift, suggesting that continents had once been joined together in a single landmass called Pangaea before drifting apart. However, he could not provide a satisfactory explanation for the force driving the drift.
- Evidence from matching landforms, fossil distributions, and climate clues in rock strata provided growing support for continental drift, but it took decades for most geologists to accept the theory.
- Convection currents in the Earth's mantle, driven by heat from the core, cause the crust and tectonic plates to slowly move over time, allowing for continental drift. This theory of plate tectonics eventually replaced continental drift as the explanation for drifting continents.
DECA Mission and Values Show
DECA is the student association for emerging leaders and entrepreneurs in marketing, management, finance, and hospitality.
Math dictionary chapter 12
This document defines key terms used in statistics and probability such as range, median, mean, and mode. It also explains different types of plots and diagrams used to display data like box-and-whisker plots, circle graphs, line graphs, and tree diagrams. Finally, it covers concepts like fundamental counting principle, complementary events, favorable and unfavorable outcomes, odds, probability, independent and dependent events.
Chameleons
Chameleons are carnivorous, eating mostly insects like flies and mosquitoes. They have specialized body parts like long, fast tongues and prehensile feet and tails that help them catch prey and climb trees. Chameleons can change color for reasons of temperature regulation and mood, becoming darker with red and yellow spots when angry, afraid, or excited rather than camouflage.
Deca Realigns Competitive Events Using Cc
DECA focuses on enhancing co-curricular education in marketing, management, and entrepreneurship. It helps students develop career skills, build self-esteem, experience leadership, and practice community service. DECA's focus areas are marketing, management, and entrepreneurship. It has integrated these focus areas into 13 career clusters and pathways that are aligned with competitive events in areas such as hospitality, finance, and marketing.
Continental Drift Theory
This document discusses the development of the theory of continental drift and plate tectonics. It describes Alfred Wegener's initial theory of continental drift in the early 1900s, based on matching fossil and geological evidence. It then discusses how Harry Hess and others in the mid-1900s developed the theory of sea floor spreading and tectonic plates to explain continental drift, providing evidence from magnetic strips on the ocean floor, photographs of molten material, and samples from ocean drilling.
Continental Drift Theory
Alfred Wegener was a German scientist born in 1880 who developed the theory of continental drift, which proposed that the continents were once joined together in a supercontinent called Pangaea. He provided evidence from matching continental coastlines, fossil distributions, and past climates to support his hypothesis. Harry Hess was an American geologist born in 1906 who helped develop the theory of plate tectonics, proposing that the Earth's lithosphere is broken into rigid plates that move over Earth's surface. He contributed the idea of seafloor spreading to explain how new oceanic crust is formed at mid-ocean ridges. The theory of plate tectonics eventually subsumed and expanded upon Wegener's idea of continental drift
Continental Drift Theory Template
The document discusses the theories of continental drift and sea floor spreading. It provides biographical information on Alfred Wegener and Harry Hess, the scientists who proposed these theories. Wegener found three pieces of evidence to support his hypothesis that all continents were once joined together in a single landmass called Pangaea: matching landforms, fossil evidence, and evidence from past climates. Hess proposed the theory of sea floor spreading, which posits that new ocean floor material rises at mid-ocean ridges and spreads outwards, pushing older material to the sides. He provided three pieces of evidence to support this: pillow lava formations on the ocean floor, matching magnetic patterns on either side of ridges, and evidence from rock samples showing older
Continental Drift Theory Template
The document discusses the theories of continental drift and sea floor spreading. It provides biographical information on Alfred Wegener and Harry Hess, the scientists who proposed these theories. Wegener found three pieces of evidence to support his hypothesis that all continents were once joined together in a single landmass called Pangaea: matching landforms, fossil evidence, and evidence from past climates. Hess proposed the theory of sea floor spreading, which posits that new ocean floor material rises at mid-ocean ridges and spreads outwards, pushing older material to the sides. He provided three pieces of evidence to support this: pillow lava formations on the ocean floor, matching magnetic patterns on either side of ridges, and evidence from rock samples showing older
Unit 4: Alfred Wegner & Harry Hess
Alfred Wegener produced evidence in 1912 that the continents are in motion, but because he could not explain what forces could move them, geologists rejected his ideas. Almost 50 years later, Harry Hess confirmed Wegener’s ideas by using the evidence of seafloor spreading to explain what moved the continents.
Register to explore the whole course here: https://school.bighistoryproject.com/bhplive?WT.mc_id=Slideshare12202017
Integ Sci 10 Lesson 1 [Autosaved].pptx
The document discusses the development of the theory of continental drift by Alfred Wegener in the early 20th century. It provides evidence that supported Wegener's hypothesis, including: the fit of continental coastlines, matching fossil distributions, and correlations between rock and mountain formations on different continents. The theory was initially rejected due to the lack of a proposed mechanism for continental movement, but gained renewed interest after the discovery of apparent polar wander in rock magnetic polarity studies.
Continental+Drift+Theory+Template
The document discusses early theories of continental drift proposed by Alfred Wegener and evidence that supported his hypothesis. It also describes how Harry Hess contributed to the development of the theory of sea floor spreading, which helped explain continental drift. Hess proposed that new ocean floor forms at mid-ocean ridges due to magma rising from below the crust. Evidence such as matching landforms, fossils, and climates across continents supported the idea that continents move over time.
Lecture19 nov20-bb
1. The Earth is layered, with a dense inner core surrounded by less dense layers. New evidence in the late 1800s showed the Earth has an interior that is hot due to volcanoes.
2. The crust varies in thickness and density around the world, with thick continental crust and thin oceanic crust. Below the crust is the mantle, which is solid but flows like a liquid over geologic timescales.
3. Seismic waves provided evidence that helped reveal the layered structure of the Earth. P and S waves travel at different speeds and through different materials, allowing scientists to map the interior of the Earth.
Continental Drift Theory
Alfred Wegener first proposed the theory of continental drift in the early 20th century. He noticed that the continents appeared to fit together and were once attached in a supercontinent called Pangaea. Wegener provided evidence from matching coastlines, fossil and rock formations, and paleoclimatic data to support his theory. However, he was unable to explain the mechanism of continental drift. Most geologists at the time rejected his theory due to the lack of a clear explanation for how and why the continents would move. It was not until the 1950s when the theory of plate tectonics was developed that Wegener's concept of continental drift became widely accepted.
Alfred wegener presentation
Alfred Wegener proposed the theory of continental drift in the early 1900s, which suggested that the continents were once joined together and have since drifted apart over millions of years. This helped explain similarities in fossils and rock formations across continents. Though initially lacking evidence, Wegener's theory is now widely accepted due to evidence like matching coastlines, fossil and rock matches between continents, and the fit of continents across oceans. The supercontinent Pangaea broke apart into Gondwana and Laurasia around 200 million years ago.
A Lfred Wegener
Alfred Wegener was the first scientist to propose the theory of continental drift, which suggests that the continents were once joined together in a supercontinent called Pangaea. He developed this idea after discovering that fossils of the same ancient plant species were found on separate continents. Further evidence for Pangaea and continental drift was provided by the matching coastlines of Africa and South America. Wegener's theories were controversial at the time but are now widely accepted, making him the founder of a major scientific revolution in geology.
Continental Drift Theory Template
Alfred Wegener, a German scientist, developed the theory of continental drift in the early 20th century. He proposed that the continents were once joined together and have since drifted apart, providing evidence from matching fossils, plant fossils in unexpected locations, and aligned geological structures. Harry Hess later expanded on this theory by proposing sea floor spreading, where new ocean crust is formed at mid-ocean ridges and pushes older crust to the sides over time, as evidenced by pillow lavas, magnetic stripe patterns in ocean crust samples, and sonar mapping of undersea ridges and trenches.
"The Earth moves" by Bill Bryson
The document summarizes the history of the theory of continental drift and plate tectonics. It describes how early 20th century scientists like Frank Taylor and Alfred Wegener first proposed the idea of continental drift, but it was widely rejected by geologists at the time. In the mid-20th century, further evidence from magnetic readings, ocean floor mapping and studies of rock formations increasingly supported continental movement. The theory was finally widely accepted in the 1960s with conclusive evidence from studies by Harry Hess, Drummond Matthews, Fred Vine and others demonstrating seafloor spreading and plate tectonics.
Continental drift
This document discusses the theory of continental drift, including its origins and evidence that supports it. [1] Abraham Ortelius first hypothesized in 1596 that continents drift due to earthquakes and floods. [2] Alfred Wegener formally proposed the theory of continental drift in 1915, suggesting continents were once joined together before breaking apart and drifting to their present locations. [3] Fossil, rock, and glacial evidence from different continents provides support, such as similar plant and animal fossils in South America, Africa, and Antarctica.
Continental drift
Continental drift is the slow movement of continents across the Earth's surface due to tectonic plate motions. Evidence for continental drift includes: the matching coastlines of separated continents; matching fossil, rock, and glacial deposits in separated areas; and paleomagnetic data showing continents were once joined. Alfred Wegener first proposed the continental drift theory in 1915, though it was not widely accepted until the 1960s when seafloor spreading was discovered, providing evidence of plate tectonics and explaining the driving force behind continental drift.
More Related Content
Viewers also liked
DECA Mission and Values Show
DECA is the student association for emerging leaders and entrepreneurs in marketing, management, finance, and hospitality.
Math dictionary chapter 12
This document defines key terms used in statistics and probability such as range, median, mean, and mode. It also explains different types of plots and diagrams used to display data like box-and-whisker plots, circle graphs, line graphs, and tree diagrams. Finally, it covers concepts like fundamental counting principle, complementary events, favorable and unfavorable outcomes, odds, probability, independent and dependent events.
Chameleons
Chameleons are carnivorous, eating mostly insects like flies and mosquitoes. They have specialized body parts like long, fast tongues and prehensile feet and tails that help them catch prey and climb trees. Chameleons can change color for reasons of temperature regulation and mood, becoming darker with red and yellow spots when angry, afraid, or excited rather than camouflage.
Deca Realigns Competitive Events Using Cc
DECA focuses on enhancing co-curricular education in marketing, management, and entrepreneurship. It helps students develop career skills, build self-esteem, experience leadership, and practice community service. DECA's focus areas are marketing, management, and entrepreneurship. It has integrated these focus areas into 13 career clusters and pathways that are aligned with competitive events in areas such as hospitality, finance, and marketing.
Viewers also liked (7)
Similar to Continental Drift Theory
Continental Drift Theory
This document discusses the development of the theory of continental drift and plate tectonics. It describes Alfred Wegener's initial theory of continental drift in the early 1900s, based on matching fossil and geological evidence. It then discusses how Harry Hess and others in the mid-1900s developed the theory of sea floor spreading and tectonic plates to explain continental drift, providing evidence from magnetic strips on the ocean floor, photographs of molten material, and samples from ocean drilling.
Continental Drift Theory
Alfred Wegener was a German scientist born in 1880 who developed the theory of continental drift, which proposed that the continents were once joined together in a supercontinent called Pangaea. He provided evidence from matching continental coastlines, fossil distributions, and past climates to support his hypothesis. Harry Hess was an American geologist born in 1906 who helped develop the theory of plate tectonics, proposing that the Earth's lithosphere is broken into rigid plates that move over Earth's surface. He contributed the idea of seafloor spreading to explain how new oceanic crust is formed at mid-ocean ridges. The theory of plate tectonics eventually subsumed and expanded upon Wegener's idea of continental drift
Continental Drift Theory Template
The document discusses the theories of continental drift and sea floor spreading. It provides biographical information on Alfred Wegener and Harry Hess, the scientists who proposed these theories. Wegener found three pieces of evidence to support his hypothesis that all continents were once joined together in a single landmass called Pangaea: matching landforms, fossil evidence, and evidence from past climates. Hess proposed the theory of sea floor spreading, which posits that new ocean floor material rises at mid-ocean ridges and spreads outwards, pushing older material to the sides. He provided three pieces of evidence to support this: pillow lava formations on the ocean floor, matching magnetic patterns on either side of ridges, and evidence from rock samples showing older
Continental Drift Theory Template
The document discusses the theories of continental drift and sea floor spreading. It provides biographical information on Alfred Wegener and Harry Hess, the scientists who proposed these theories. Wegener found three pieces of evidence to support his hypothesis that all continents were once joined together in a single landmass called Pangaea: matching landforms, fossil evidence, and evidence from past climates. Hess proposed the theory of sea floor spreading, which posits that new ocean floor material rises at mid-ocean ridges and spreads outwards, pushing older material to the sides. He provided three pieces of evidence to support this: pillow lava formations on the ocean floor, matching magnetic patterns on either side of ridges, and evidence from rock samples showing older
Unit 4: Alfred Wegner & Harry Hess
Alfred Wegener produced evidence in 1912 that the continents are in motion, but because he could not explain what forces could move them, geologists rejected his ideas. Almost 50 years later, Harry Hess confirmed Wegener’s ideas by using the evidence of seafloor spreading to explain what moved the continents.
Register to explore the whole course here: https://school.bighistoryproject.com/bhplive?WT.mc_id=Slideshare12202017
Integ Sci 10 Lesson 1 [Autosaved].pptx
The document discusses the development of the theory of continental drift by Alfred Wegener in the early 20th century. It provides evidence that supported Wegener's hypothesis, including: the fit of continental coastlines, matching fossil distributions, and correlations between rock and mountain formations on different continents. The theory was initially rejected due to the lack of a proposed mechanism for continental movement, but gained renewed interest after the discovery of apparent polar wander in rock magnetic polarity studies.
Continental+Drift+Theory+Template
The document discusses early theories of continental drift proposed by Alfred Wegener and evidence that supported his hypothesis. It also describes how Harry Hess contributed to the development of the theory of sea floor spreading, which helped explain continental drift. Hess proposed that new ocean floor forms at mid-ocean ridges due to magma rising from below the crust. Evidence such as matching landforms, fossils, and climates across continents supported the idea that continents move over time.
Lecture19 nov20-bb
1. The Earth is layered, with a dense inner core surrounded by less dense layers. New evidence in the late 1800s showed the Earth has an interior that is hot due to volcanoes.
2. The crust varies in thickness and density around the world, with thick continental crust and thin oceanic crust. Below the crust is the mantle, which is solid but flows like a liquid over geologic timescales.
3. Seismic waves provided evidence that helped reveal the layered structure of the Earth. P and S waves travel at different speeds and through different materials, allowing scientists to map the interior of the Earth.
Continental Drift Theory
Alfred Wegener first proposed the theory of continental drift in the early 20th century. He noticed that the continents appeared to fit together and were once attached in a supercontinent called Pangaea. Wegener provided evidence from matching coastlines, fossil and rock formations, and paleoclimatic data to support his theory. However, he was unable to explain the mechanism of continental drift. Most geologists at the time rejected his theory due to the lack of a clear explanation for how and why the continents would move. It was not until the 1950s when the theory of plate tectonics was developed that Wegener's concept of continental drift became widely accepted.
Alfred wegener presentation
Alfred Wegener proposed the theory of continental drift in the early 1900s, which suggested that the continents were once joined together and have since drifted apart over millions of years. This helped explain similarities in fossils and rock formations across continents. Though initially lacking evidence, Wegener's theory is now widely accepted due to evidence like matching coastlines, fossil and rock matches between continents, and the fit of continents across oceans. The supercontinent Pangaea broke apart into Gondwana and Laurasia around 200 million years ago.
A Lfred Wegener
Alfred Wegener was the first scientist to propose the theory of continental drift, which suggests that the continents were once joined together in a supercontinent called Pangaea. He developed this idea after discovering that fossils of the same ancient plant species were found on separate continents. Further evidence for Pangaea and continental drift was provided by the matching coastlines of Africa and South America. Wegener's theories were controversial at the time but are now widely accepted, making him the founder of a major scientific revolution in geology.
Continental Drift Theory Template
Alfred Wegener, a German scientist, developed the theory of continental drift in the early 20th century. He proposed that the continents were once joined together and have since drifted apart, providing evidence from matching fossils, plant fossils in unexpected locations, and aligned geological structures. Harry Hess later expanded on this theory by proposing sea floor spreading, where new ocean crust is formed at mid-ocean ridges and pushes older crust to the sides over time, as evidenced by pillow lavas, magnetic stripe patterns in ocean crust samples, and sonar mapping of undersea ridges and trenches.
"The Earth moves" by Bill Bryson
The document summarizes the history of the theory of continental drift and plate tectonics. It describes how early 20th century scientists like Frank Taylor and Alfred Wegener first proposed the idea of continental drift, but it was widely rejected by geologists at the time. In the mid-20th century, further evidence from magnetic readings, ocean floor mapping and studies of rock formations increasingly supported continental movement. The theory was finally widely accepted in the 1960s with conclusive evidence from studies by Harry Hess, Drummond Matthews, Fred Vine and others demonstrating seafloor spreading and plate tectonics.
Continental drift
This document discusses the theory of continental drift, including its origins and evidence that supports it. [1] Abraham Ortelius first hypothesized in 1596 that continents drift due to earthquakes and floods. [2] Alfred Wegener formally proposed the theory of continental drift in 1915, suggesting continents were once joined together before breaking apart and drifting to their present locations. [3] Fossil, rock, and glacial evidence from different continents provides support, such as similar plant and animal fossils in South America, Africa, and Antarctica.
Continental drift
Continental drift is the slow movement of continents across the Earth's surface due to tectonic plate motions. Evidence for continental drift includes: the matching coastlines of separated continents; matching fossil, rock, and glacial deposits in separated areas; and paleomagnetic data showing continents were once joined. Alfred Wegener first proposed the continental drift theory in 1915, though it was not widely accepted until the 1960s when seafloor spreading was discovered, providing evidence of plate tectonics and explaining the driving force behind continental drift.
CONTINENTAL DRIFT THEORY PPT
Continental drift is the hypothesis that the Earth's continents have moved over geologic time relative to each other, thus appearing to have "drifted" across the ocean bed.
Wegener argued that there was once a super continent (which he named Pangea -meaning ''all land ) which split up over millions of year and gradually drifted over to their current place on earth at a rate of a few centimeter year.
Continental drift 2
Continental drift is the movement of Earth's continents relative to each other over geological time. Abraham Ortelius first hypothesized in 1596 that continents 'drift' and were torn apart by earthquakes and floods. Alfred Wegener formally proposed the theory of continental drift in 1915, suggesting that continents had once formed a single landmass that broke apart and drifted to their current positions. Key evidence Wegener cited included matching fossil distributions, complementary continental margins, and consistent rock sequences across continents now separated by oceans, providing support for the notion that continents had drifted apart over time. However, the theory was initially rejected due to the lack of a proposed driving mechanism for continental motion.
Tectonics: Plate Tectonic Theory history
The document discusses plate tectonics and the evidence that supports the theory. It describes how fossils and rock formations found in different parts of the world provided early evidence that continents have moved over time. It also outlines key evidence from the mid-20th century including the discovery of sea floor spreading and magnetic reversals in ocean crust that helped establish the modern theory of plate tectonics.
Continental drift
Alfred Wegener first proposed the theory of continental drift, which suggested that the continents were once joined together in a super continent called Pangaea before drifting apart to their current locations. Wegener's theory was initially rejected because he could not explain the driving force behind continental movement. Evidence that later emerged in support of continental drift includes: matching fossil and rock formations between continents, matching climate zones in pole and equatorial regions, and magnetic pole reversal patterns in ocean floor sediments. This evidence helped prove that continents have shifted positions over time.
Continental drift theory (1)
Alfred Wegener first proposed his theory of continental drift in 1910. He noticed that the continents seemed to fit together like pieces of a puzzle. Wegener also presented three lines of evidence to support his theory: landforms on different continents matched up, matching plant and animal fossils were found on separated continents, and patterns of past climates did not match the continents' current positions. However, Wegener's theory was initially rejected because he could not explain how or why the continents would move. Wegener believed that evidence from all earth sciences was needed to understand the planet's past configurations and that new discoveries could alter conclusions.
Similar to Continental Drift Theory (20)
More from thenderson
Math dictionary chapter 12
This document defines key terms used in statistics and probability such as range, median, mean, and mode. It also explains different types of plots and diagrams used to display data like box-and-whisker plots, circle graphs, line graphs, and tree diagrams. Finally, it covers concepts like fundamental counting principle, complementary events, favorable and unfavorable outcomes, odds, probability, independent and dependent events.
Guatemala
The document provides information about the geography, economy, culture and politics of Guatemala. It notes that Guatemala has a diverse landscape that includes mountains, rivers and coastlines. It has a population of over 11 million people and its largest city and capital is Guatemala City. The main industries are clothing, textiles, mining and tourism. The primary language is Spanish and the dominant religion is Roman Catholicism.
Geo Power Point
This document defines and provides examples of different types of angles, lines, triangles, quadrilaterals, polygons, and special angle relationships in geometry. It defines acute, obtuse, right, and straight angles. It also defines complementary, supplementary, parallel, intersecting, and perpendicular lines. Examples are provided to illustrate acute, right, obtuse, equilateral, isosceles, scalene, and special triangles. Quadrilaterals like trapezoids, parallelograms, rectangles, rhombuses, and squares are also defined. Finally, it discusses polygons, adjacent angles, vertical angles, congruent angles, and corresponding angles.
Saturn
Saturn is named after the Roman god of agriculture. It is the second largest planet in our solar system and is made up of gas with no surface. Saturn has a diameter of 74,500 miles and is 885,500,000 miles from the sun. It has no signs of life but has 23 moons and millions of small rings composed together.
How To Survive 5th Grade
Tyler Henderson provides tips for surviving 5th grade, including doing homework, being prepared, keeping areas clean and organized, respecting teachers, and listening in class. Homework is important for being rewarded and feeling good about working hard. Fifth grade can be surprising so do your best and enjoy it. Desks and lockers should be kept clean and organized so items can be easily found. Teachers should be respected and trusting them will lead to a happy experience.
Horses
Horses come in gray and black colors and live domestically in barns or stables, while wild horses live naturally between Canada, Columbia, California, and Mexico. Horses are herbivores that eat grasses, shrubs, trees, and even poison ivy. The first horses arrived in North America with European explorers around 500 years ago, and today most wild horses still reside in western regions of the continent or on offshore Atlantic islands.
Cell Cycle
The document describes the stages of the cell cycle: Interphase where the cell grows and chromosomes copy; Prophase where the nuclear envelope breaks down; Metaphase where chromosomes line up in the middle; Anaphase where chromosomes are pulled to opposite poles; Telophase where new nuclei form; and Cytokinesis where the cell divides into two daughter cells.
Who Am I Tyler
I am a tiger. I live in forests across Asia, from India and China to Siberia. As a carnivore at the top of the food chain, I need dense habitat with plenty of prey like deer, boar, and antelope to survive. I am unique because no two tigers have the same stripe pattern, and I can live longer in captivity than in the wild.
More from thenderson (8)
Recently uploaded
Natural birth techniques - Mrs.Akanksha Trivedi Rama University
Natural birth techniques - Mrs.Akanksha Trivedi Rama UniversityAkanksha trivedi rama nursing college kanpur.
Natural birth techniques are various type such as/ water birth , alexender method, hypnosis, bradley method, lamaze method etcPengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptx
The History of Stoke Newington Street Names
Presented at the Stoke Newington Literary Festival on 9th June 2024
www.StokeNewingtonHistory.com
Leveraging Generative AI to Drive Nonprofit Innovation
In this webinar, participants learned how to utilize Generative AI to streamline operations and elevate member engagement. Amazon Web Service experts provided a customer specific use cases and dived into low/no-code tools that are quick and easy to deploy through Amazon Web Service (AWS.)
Hindi varnamala | hindi alphabet PPT.pdf
हिंदी वर्णमाला पीपीटी, hindi alphabet PPT presentation, hindi varnamala PPT, Hindi Varnamala pdf, हिंदी स्वर, हिंदी व्यंजन, sikhiye hindi varnmala, dr. mulla adam ali, hindi language and literature, hindi alphabet with drawing, hindi alphabet pdf, hindi varnamala for childrens, hindi language, hindi varnamala practice for kids, https://www.drmullaadamali.com
clinical examination of hip joint (1).pdf
described clinical examination all orthopeadic conditions .
How to Manage Your Lost Opportunities in Odoo 17 CRM
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...Nguyen Thanh Tu Collection
https://app.box.com/s/y977uz6bpd3af4qsebv7r9b7s21935vdবাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)Academy of Science of South Africa
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.How to Setup Warehouse & Location in Odoo 17 Inventory
In this slide, we'll explore how to set up warehouses and locations in Odoo 17 Inventory. This will help us manage our stock effectively, track inventory levels, and streamline warehouse operations.
How to Fix the Import Error in the Odoo 17
An import error occurs when a program fails to import a module or library, disrupting its execution. In languages like Python, this issue arises when the specified module cannot be found or accessed, hindering the program's functionality. Resolving import errors is crucial for maintaining smooth software operation and uninterrupted development processes.
How to Add Chatter in the odoo 17 ERP Module
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
Main Java[All of the Base Concepts}.docx
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
Recently uploaded (20)
Natural birth techniques - Mrs.Akanksha Trivedi Rama University
Natural birth techniques - Mrs.Akanksha Trivedi Rama University
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Leveraging Generative AI to Drive Nonprofit Innovation
Leveraging Generative AI to Drive Nonprofit Innovation
How to Manage Your Lost Opportunities in Odoo 17 CRM
How to Manage Your Lost Opportunities in Odoo 17 CRM
Film vocab for eal 3 students: Australia the movie
Film vocab for eal 3 students: Australia the movie
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)
How to Setup Warehouse & Location in Odoo 17 Inventory
How to Setup Warehouse & Location in Odoo 17 Inventory
Digital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental Design
Continental Drift Theory
- 1. Continental Drift Theory Millie Thompson