Alfred Wegener first proposed the continental drift theory in 1910, which hypothesized that the continents were once joined together in a single landmass called Pangaea. Wegener provided three lines of evidence to support this theory: geological formations of continents matched together, matching plant and animal fossils found on different continents, and evidence that glaciers had extended farther than current climates would allow indicating continents had moved. While initially rejected, Wegener's theory helped establish the modern theory of plate tectonics.
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 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.
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!!!)
This is a powerpoint showing the Pangaea theory. A theory of the continents once forming a huge super continent before breaking apart. Alfred Weneger, a German scientist, was the one who thought of the continents once existing as one before splitting and breaking apart.
Download the lesson exemplar so you can follow this ppt. I have uploaded the lesson plan on this presentation too. Please search continental drift theory LP
if videos do not play, here are the links
https://www.youtube.com/watch?v=WaUk94AdXPA
https://www.youtube.com/watch?v=UwWWuttntio
Earth and Life Science
Earth Materials and Processes
Deformation of the Crust: Continental Drift Theory
Learning Competencies
The learners shall be able to explain how the continents drift (S11/12ESId-20), and cite evidence that support continental drift (S11/12ES-Id-21).
Specific Learning Outcomes
At the end of the lesson, the learners will be able to:
1. Discuss the history behind the Theory of Continental Drift;
2. Describe the Continental Drift Theory; and
3. Enumerate and explain the evidence used to support the idea of drifting continents.
Earth and Life Science
Earth Materials and Processes: Deformation of the Crust
The learners shall be able to:
1) explain how the seafloor spreads (S11/12ESId-23);
2) describe the structure and evolution of ocean basins (S11/12ES-Id-24); and
3) explain how the movement of plates leads to the formation of folds and faults (S11/12ES-Id-22).
Specific Learning Outcomes
At the end of the lesson, the learners will be able to:
1. Discuss the history behind the Theory of Continental Drift;
2. Describe the Continental Drift Theory;
3. Enumerate and explain the evidence used to support the idea of drifting continents;
4. Identify major physiographic features of ocean basins
5. Describe the process of seafloor spreading
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!!!)
This is a powerpoint showing the Pangaea theory. A theory of the continents once forming a huge super continent before breaking apart. Alfred Weneger, a German scientist, was the one who thought of the continents once existing as one before splitting and breaking apart.
Download the lesson exemplar so you can follow this ppt. I have uploaded the lesson plan on this presentation too. Please search continental drift theory LP
if videos do not play, here are the links
https://www.youtube.com/watch?v=WaUk94AdXPA
https://www.youtube.com/watch?v=UwWWuttntio
Earth and Life Science
Earth Materials and Processes
Deformation of the Crust: Continental Drift Theory
Learning Competencies
The learners shall be able to explain how the continents drift (S11/12ESId-20), and cite evidence that support continental drift (S11/12ES-Id-21).
Specific Learning Outcomes
At the end of the lesson, the learners will be able to:
1. Discuss the history behind the Theory of Continental Drift;
2. Describe the Continental Drift Theory; and
3. Enumerate and explain the evidence used to support the idea of drifting continents.
Earth and Life Science
Earth Materials and Processes: Deformation of the Crust
The learners shall be able to:
1) explain how the seafloor spreads (S11/12ESId-23);
2) describe the structure and evolution of ocean basins (S11/12ES-Id-24); and
3) explain how the movement of plates leads to the formation of folds and faults (S11/12ES-Id-22).
Specific Learning Outcomes
At the end of the lesson, the learners will be able to:
1. Discuss the history behind the Theory of Continental Drift;
2. Describe the Continental Drift Theory;
3. Enumerate and explain the evidence used to support the idea of drifting continents;
4. Identify major physiographic features of ocean basins
5. Describe the process of seafloor spreading
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
How to Split Bills in the Odoo 17 POS ModuleCeline George
Bills have a main role in point of sale procedure. It will help to track sales, handling payments and giving receipts to customers. Bill splitting also has an important role in POS. For example, If some friends come together for dinner and if they want to divide the bill then it is possible by POS bill splitting. This slide will show how to split bills in odoo 17 POS.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
2. Alfred was trying to get his girlfriend’s father to like him. Her father was a well-known geologist!! "Doesn't the east coast of South America fit exactly against the west coast of Africa, as if they had once been joined?" wrote Wegener to his future wife in December 1910. "This is an idea I'll have to pursue."
14. Ice could not have extended this far. So...continents MUST have moved.. Evidence from Climate
15. Drift away Continental Drift Theory At first nobody believed Alfred Wegener’s theory….. WHY YOU ASK!
16. Scientists still do not appear to understand sufficiently that all earth sciences must contribute evidence toward unveiling the state of our planet in earlier times, and that the truth of the matter can only be reached by combing all this evidence. . . It is only by combing the information furnished by all the earth sciences that we can hope to determine 'truth' here, that is to say, to find the picture that sets out all the known facts in the best arrangement and that therefore has the highest degree of probability. Further, we have to be prepared always for the possibility that each new discovery, no matter what science furnishes it, may modify the conclusions we draw." Alfred Wegener. The Origins of Continents and Oceans (4th edition)
