Wednesday, May 9, 2012

Continents on the move!

From Wegener to Hess to Plate Tectonics, what evidence do we have that supports Continental Drift and Plate Tectonics?  Could a landmass like Pangaea happen again?

61 comments:

  1. Nicolette C. Pd.8 :)

    Some evidence that we have is...............
    -fossils of animals that can be found on the other side of the world.

    Most people do believe that the continents will move again because the continents are always shifting.

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  2. Some evidence that we have about Continental Drift is that all of the continents fit together almost perfectly. Pangaea can always happens again because the continents are always moving and shifting around.

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  3. some evidence we have that support the idea of continental drift and the land once known as Pangaea is fossils found and mountains.there is another idea that the continents will travel the whole earth and make Pangaea once again. i got a question what would happen if the states broke apart and became other islands and when all the continents once again become Pangaea all the states and continents would not fit together. wouldn't that be a natural disaster causing all the states and continents would still be trying to move?

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  4. M.S.W. period 8
    Some evidence we have that supports Continental Drift and Plate Tectonics is that identical plant and animal fossils of the same age have been found in rocks in Africa and South America. A landmass like Pangaea could happen again because the continents are always in motion.

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  5. If you look at the continents,they all seem to fit together if we turn them certain ways. Like the pieces of some contiental puzzle. Due to continental drift, these continents are always moving apart so there will be another Pangea on the other side of the world.(Contients move about 1cm per year).

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  6. Sahar H. Pd.7

    Many fossil comparisons along the edges of continents that look like they fit together suggest species similarities that would only make sense if the two continents were joined at some point in the past.
    Another Pangaea wouldn't happen again exactly (in the sense of it being exactly the same shape and fitting together flawlessly), but it is likely that another supercontinent of some type will form eventually.

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  7. Kelly Amendola,Period 7:

    Evidence that supports The Continental Drift and Plate Tectonics is that identical plant and animal fossils of the same age have been found in rocks in Africa and South America. Some people say that Pangaea might happen again because the continents are always moving.

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  8. We have evidence that supports the theory of continetal drift and plate tectonis because living mammals that live on different continents, for example Madagascar and India, are very similar to eachother. However, Madagascar and India are not close-by and the mammals on Africa are vaguely different. As we know, Madagascar is now off the coast of Africa today.
    Pangaea could very well happen beacause the Earth moves constantly and one day they may connect again.

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  9. A.S.Zazalli-period:5- In the 1900's, a German meteorologist, Alfred Wegener, was the first to present an argument supporting continental drift. He proposed that the continents were not stationary, but actually moving or drifting away from one another. His primary sources of evidence included the fit of the continents, glacial till deposits, and the apparent shifting of climatic belts over time. His colleagues at the time argued for polar wandering as an explanation of his data. These ideas were not well accepted until later scientists in the 1940's and 50's expanded on these ideas adding to them paleomagnetism, convection currents and sea floor spreading. With all this new evidence, plate tectonic theory became an accepted idea in the 1970's.


    Wegener noticed that the continents seemed to fit together, not at the continuously changing shoreline, but at the edge to their continental shelves. He derived this hypothesis from the observation that the continents in the southern hemisphere exhibit an identical pattern of rock and fossils known as the "Gondwana sequence". The most logical explanation was that the continents themselves were once parts of a much larger "super-continent" which was named Pangaea.

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  10. Amanda Zheng Period 7

    Some evidence that we have about Continental Drift is that all of the continents fit together almost perfectly. Pangaea can always happen again because the continents are always moving and shifting around.

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  13. Yes, I think that Pangea could happen again. The tectonic plates moved more than once and is probably moving as we speak. Today in science class, we did a lab about plate tectonics moving and separating to make new lands forms. I know this because, South America and Africa make a bigger land mass. Its like a puzzle that connects other continents to make a one big puzzle piece. There was evidence that supports the theory. There were dinosaur fossils located in parts of the world that are now separated by water and no other way of getting across the sea. There were the same types of dinosaur fossils in different continents. We might not know that the plates will move in our time, but it can move again.

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  14. Joseph Amendola Period 7- Alfred Wegener was the first to present an argument supporting continental drift in the 1900's. He said that the continents were not stationary, but actually moving or drifting away from one another. His primary sources of evidence included the fit of the continents, glacial till deposits, and the apparent shifting of climatic belts over time. His colleagues at the time argued for polar wandering as an explanation of his data. These ideas were not well accepted until later. With all this new evidence, plate tectonic theory became an accepted idea in the 1970's. Wegener noticed that the continents also seemed to fit together, not at the continuously changing shoreline, but at the edge to their continental shelves. The most logical explanation was that the continents themselves were once parts of a much larger "super-continent" called Pangaea. I do think a landmass like Pangea could happen again because continents are always moving.

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  15. From Wegener to Hess to Plate Tectonics, what evidence do we have that supports Continental Drift and Plate Tectonics? Could a landmass like Pangaea happen again?

    The evidence that we have that supports continental drift and plate tectonics is that all the continents fit together like puzzle pieces and that some of the same fossils have been found in Africa and South America. I think that Pangea could happen again because the continents are always moving.

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  16. Alexa P. Period2-Alfred Wegener was the first to present an argument supporting continental drift in the 1900’s. Actually moving or drifting away from one another. Wegener noticed that the continents also seemed to fit together. These idea were accepted in the 1970s. I think a landmass like Pangaea could happen again because the continents are always moving.

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  17. megan amendola period 3 :)

    The evidence we have is what A lfred Wegner said about how the continents fit toget her and some of the same things like fossils were found in Africa and South America. Pangea could happen again because the continents are always moving now matter what and one day the puzzle peices might fit together again.

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  18. SP period 8- the continents fit like a puzzle. Pangaea could happen again because the continents move.

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  19. Daniel Chen
    7 period
    Some evidence we have that supports Continental Drift and Plate Tectonics is that identical plant and animal fossils of the same age have been found in rocks in Africa and South America. A landmass like Pangaea could happen again because the continents are always in motion.

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  20. VV2
    period 5
    Some evidence of the continents moving is that fossils of the same kind of animal is found in more than one continent. Something like Pangea could happen because the continents are always moving.

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  21. Alfred Wegener was a German geologist from the early 20th century. Wegener noticed that all of the continents seemed to fit in like a puzzle. Some evidence that supports Wegeners theory is the continents fitting like a puzzle, fossils from the same time, found in Africa and South America, rocks and mountain ranges, and climate evidence. Pangaea could happen again because the continents move.

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  22. ava p. period5
    some evidence we have that supports continental drift and plate techtonics is that similar plant and animal fossils have been found in different continents. the continents are always moving so another thing like pangea can very easily happen again.

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  24. vincent verlingo per.5 Evidence that all the continents were once pangea is that they all fit together like puzzle pieces, and yes pangea can happen again because the continents are always moving

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  25. D.O period 2
    Evidence we have is the continents will fit if they are ever re-assembled again.

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  26. SR Period 7:)

    The evidence that we have that supports the theory of the Continental Drift is that all the continenets fit perfectly together. Also, scientists found fossils of dinosaurs in two continents. There is no possible way a dinosaur could swim the distance of the ocean. I do think the continents will drift again because they are constantly moving.

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  27. B,A period 3
    Pangaea could occur if the continents keep moving like the are. Scientist do have evidence of the continenst moving and pangaea occurring. if you sees closely you could see Africa and South America look like if they were to be a puzzle they seem like a perfect match.

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  28. ND Period 8
    Some evidence that we have is all the continents fit together like a puzzle and fossils were found in different parts of the world.

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  29. M.A pd. 8- Some evidence we have is:
    -The coasts of the continents surrounding the Atlantic ocean could, if the continents were moved closer, fit together like a jigsaw puzzle.
    -Similar plant and animal fossils are found around diverse continent shores, suggesting that they were once joined.

    Yes, another land mass,like pangaea can easily occur again becuase the continents are always shifting and in motion.

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  30. V.D. Pd.8
    Numerous and extensive clues we have point us toward the assemble of continents known as Pangeae. Fossils from the same species were found on two different continents. This was one piece of the puzzle. Th single, mass Pangeae from 300 million years ago can happen again since the tectonic plates are constantly shifting. 40-80 million years ago, India collided with Asia, therefore creating the Himalayan mountains. The Atlantic Ocean has gradually been getting bigger and the Pacific has shrunk since then. The continents continue to move a couple centimeteres each year. About 60 million years from now, scientists now have reason to believe that Australia will be as far north as the Equator! With supporting evidence and clues, I believe tht in the future, the continents will again form one single mass.

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  31. enano period 5 some evidence is that they found fossils of the same animal but in different places. yes i think it can happen again because the continents are still moving a few inches every year

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  32. SS Pd.8
    Evidence that supports the theory of continental drift was found when Wegener was studying glaciers in Greenland. Wegener collected ancient climate information to confirm his glacial data.For the glaciers to have been present with the continents in their current positions, much of the world should have been under ice. But this wasn't the case. Sedimentary rock examination showed a change in climates, and the only possible explanations were continental drift or movement of the poles.A land mass like Pangaea can and probably happen again because the continents always shift, billions of years from now the continents may crash into each other making another large land mass like Pangaea.

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  33. AT Pd. 8
    Evidence that we have is that scientists found fossils of dinosaurs in two different continents but for the same animal and that is only possible if the continents broke apart and drifted from each other which is what happened. Yes, I believe that the continents will continue to move because they are slowly shifting all the time.

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  35. Yes pangea may happen again. It may because everyday the earth shifts and like scientists say that alaska moves closer and closer to russia everyday

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  36. Pd. 5 , UG: One way we can prove continental drift is because some of Alfred Wegener's evidence includes the fit of the continents, and the shifting of climatic belts over time.

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  37. J.W. Pd. 8
    Evidence that Pangea was existent is that fossils from one continent are also in another. This means that these dinosaurs could easily travel from continent to continent, thus meaning that the continents had to be close together. Pangea is possible again, although every continent would collide and would not fit like a puzzle piece.

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  38. Willem T. Per 8

    Some evidence that Pangea existed was that all the continents fit together like a puzzle. This could happen again because the continents are always moving.

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  39. AC Pd. 8

    The most obvious piece of evidence is that the eastern coast of South America fits almost perfectly with the western coast of Africa. Fossils have also been found on different continents that now have extremely different climates.The mountain chains also provides evidence. For example, the Appalachian Mountains extend from the northeastern US to the Caledonides of Ireland, Britain, and Scandinavia. Many earthquakes and volcanoes are formed near plate boundaries, so it supports the theory of plate tectonics.
    Another super-continent may form, but it's extremely unlikely that all the continents we have now will go back to fitting the exact same way they were before.

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  40. J.S. Period 5
    All the continents seem to fit together like a puzzle. That could mean that million of years ago all the continents were once together to form a huge continent,and it was call Pangaea, So this can prove the continental drift really exists.

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  41. The continents fit just like a puzzle.So this might prove that the Continental Drift actuall did exist

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  42. A.H. Pd. 8:
    The evidence presented for the continental drift theory, proposed by Alfred Wegener, is solid and very reputable, therefore the once existent and ancient uniformed landmass, named Pangaea, is undoubtedly possible. (Ironically, the name quite literally means "all land") For starters, plant and animal fossils have been found on opposite sides of vast oceans. The chances of that occurring as separate land masses and ending up with the same genetic code and body structure are next to impossible. There is another piece of evidence in the fossil category: Hardly any fossils found in the ocean are more ancient than 180 million years old. This is explained by Harry Hammond Hess's theory of seafloor spreading. Over the course of time, new "ocean floor" is generated when magma is driven up through ridges ("ridges" are oceanic ridges that look like the land form known as a divide, except only with a depression that looks like a cut running down the length of it) while in other locations it is being crushed and driven below the surface, therefore eventually turning it into magma once again. This explanation is also supported by the fact that ocean rock is always younger when closer to the ridges and older when further away from the ridges. However, the reasoning for thinking that Pangaea once existed is also logical, not just the jargon of the complicated scientific category. The continents and a few of the other large landmasses clearly fit to together. On first attempt, an individual will realize that the pieces are not exactly the best jigsaw puzzle they have come across. This is because the continents were effectively, put informally, "squashed and stretched" over time. India was also a separate land mass at the time before it set a crash course with Asia. It, as might know, indeed did crash. However, this collision generated so much force that it formed the famous and very large Himalayan Mountain Range, which today proudly stands with Mount Everest as the spearhead.
    Some people insist stubbornly that Pangaea cannot happen again. This is rather worrying because this is a very simple matter of logical reasoning. The Mid-Atlantic Ridge, a extremely long oceanic ridge that runs down the middle of the Atlantic and stretches about 3/4 the way from North and South Poles. Lately, much activity has been going on around this ridge, and each year this activity is pushing the continents farther and farther apart. Basically, the Atlantic is "stretching" and the Pacific is "shrinking". Therefore, the continents will obviously end up on the other side of the world when the Pacific has shrunk to nothing. (or at least, almost nothing) On the other hand, no one alive today will still be alive when the new Pangaea has been formed simply because of the rate of motion, which happens to be 2-3 centimeters each year. The snail is so much better. With the wonders of logical reasoning, I truly believe that Pangaea Version 2.0 is inevitable.

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  43. Wegener noticed that the continents seemed to fit together, not at the continuously changing shoreline, but at the edge to their continental shelves. He derived this hypothesis from the observation that the continents in the southern hemisphere exhibit an identical pattern of rock and fossils known as the "Gondwana sequence". The most logical explanation was that the continents themselves were once parts of a much larger "super-continent" which was named Pangaea.

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  44. JOB P5
    Some evidence that we have is that the same plants, rocks, and dinosaur remains have been found on completely different parts of the globe. Not to mention the similarity of all the continents as they all fit together.

    http://science.nasa.gov/science-news/science-at-nasa/2000/ast06oct_1/
    this site talks about the super continent that will form in 250 million years: pangea ultima

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  45. W.C. per.7 All the continents fit together like a puzzle and the earth is constantly moving

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  46. ba p5
    some evidence we have is that there are fossils and plants from different parts of the planet. Yes I do think somthing like pangea can happen again because the continents are always moving a very little bit, and all the continents fit like a puzzle

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  47. the continents fit together like a puzzle. another way that it proves the continents fit together are the fossils.

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  48. The primary sources of evidence include the fit of the continents, glacial till deposits, and the apparent shifting of climatic belts over time.Also,using the alignment of magnetite minerals in the rock layers, the movement of the magnetic poles could be traced through the different geologic periods.Pangaea can happen again.As continents drift apart in one direction they are drifting closer on the opposite sides because the earth is round.

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  49. J.C Per. 5- Earth's continents fit together like a jigsaw puzzle. So, if they keep moving, their is a chance that they can connect again in the future.

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  50. The continents fit ogether almost perfectly this proves Earth was once together. It would take a really long time but pangea could happen again.

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  51. I.F Per. 8- There is much evidence that Wegener and Hess's theories are correct. The continents fit together evenly as if they were once attached. Fossil evidence backs this up as well. If these theories are correct, a landmass like Pangaea can very likely occur again. The continents will probably continue to move until they connect again.

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  53. Katie Horta-Per:5
    Wegener noticed that the continents seemed to fit together, not at theshoreline, but at the edge to their continental shelves. He derived this hypothesis from the observation that the continents in the southern hemisphere exhibit a pattern of rock and fossils known as the "Gondwana sequence". The most logical explanation was that the continents themselves were once parts of a much larger "super-continent" which was named Pangaea.
    A second idea supporting movement of the continents was the glacial till deposits in the southern hemisphere. With the continents in their present positions, the till deposits indicate erratic glacier motion. When the continents are put together, they show a motion of the glacier from southern Africa and Northern Australia.

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  54. Per.2 :P
    Well, South America and Africa are like a puzzle piece and also studies shown,South America's coast and Africa's coast have same plants and mineral mines with the same rocks of Bauxite!also the in side of the islands in the Caribbean like coast of Mexico and the islands Caribbean fits with Spain and Portugal have the Appalachian Mountains ruins if put together! it is really neat to learn how our country was once a united piece of land!

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  55. K.p.-Per 7
    Question:::From Wegener to Hess to Plate Tectonics, what evidence do we have that supports Continental Drift and Plate Tectonics? Could a landmass like Pangaea happen again?
    ~~~~ The evidence we have that supports continental drift and plate tectonics are fossils were found in rocks.
    ~~~~~ Pangaea could always happen since the continents are all in motion and shift around.

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  56. M.D.-Per 5
    Wegener collected ancient climate information to confirm his glacial data. For the glaciers to have been present with the continents in their current positions, much of the world should have been under ice. But this wasn't the case. Sedimentary rock examination showed a change in climates, and the only possible explanations were continental drift or movement of the poles.

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  57. C.A. Per. 5
    Some evidence that we have found is that the continents fit together almost perfectly and we have found fossils that used to be in warmer climates now in colder climats today.

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  58. Alfred Wegener first thought of this idea by noticing that the different large landmasses of the Earth almost fit together like a jigsaw, and in 1960, Hess made his single most important contribution, which is regarded as part of the major advance in geologic science of the 20th century. In a widely circulated report to the Office of Naval Research, he advanced the theory, now generally accepted, that the Earth's crust moved laterally away from long, volcanically active oceanic ridges.
    Evidence we have to prove this theory is fossils found around the world of the same species of creatures, and that each continent fit together almost smoothly. Unless an earth quake or the plates shift, there probably won't be a pangea again.

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  59. W.R Per 2

    How they colided with eachother to make Pangea
    It could happen again in a long time from now

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  60. Continental Drift- fossils from different climates were found in rocks that were found in the opposite climate.

    Pangaea can reoccur because the continents are always moving and shifting, even though it would take hundreds of millions of years for it to happen again.

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