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PPT Science10_Lesson 8_Evidences that Support Plate Movements FINAL.pptx
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- 3. CONTEN T STANDA RD •The learners demonstrate understanding ofthe relationship among the locations of volcanoes, earthquake epicenters, and mountain ranges.
- 4. PERFORMANCE STANDARD The learnersshould be able to demonstrate ways to: • Suggest ways by which he/she can contribute to government efforts in reducing damage due to earthquakes, tsunamis and volcanic eruptions.
- 5. LEARNING COMPETENCY Enumerate thelines of evidence that support plate movement (S10ES -la-j-36.6
- 6. OBJECTIVES ➢ Trace theexistence of fossils of plants and animals as evidences found in the present continents that supports the fitting of drifted continents ➢ Cite other proofs of continental drift theory ➢ Explain the cause of movement of tectonic plates ➢ Describe how evidences of plate movement were collected ➢ Cite other proofs of plate movement 6
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- 8. 8 a German meteorologist andgeophysicist, once hypothesized that continents were once joined as a single landmass called PANGAEA
- 9. 9 Refer to thehuman, plant, and animal remains that have been preserved through time like human or animal teeth, skull, and bone fragments.
- 10. 10 A supercontinent that existedduring the late paleozoic and early mesozoic eras. It assembled from earlier continental units approximately 335 million years ago, and it began to break apart about 175 million years ago.
- 11. 11 A theory whichsuggests that earth’s crust is made up of the plates that interact in various ways, thus producing earthquakes, mountains, volcanoes, and other geologic features.
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- 13. 13 a German meteorologistand geophysicist, once hypothesized that continents were once joined as a single landmass called PANGAEA Alfred Wegener
- 14. 14 States that allthe continents were once one large landmass that broke apart and where the pieces moved slowly to their current locations. Continental Drift Theory
- 15. CONTINENTAL DRIFT THEORY ⮚States that all the continents were once one large landmass that broke apart and where the pieces moved slowly to their current locations.
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- 17. 17 The Eastern coastline ofSouth America and western coastline of Africa look like they would fit together as a jigsaw puzzle EVIDENCES OF CONTINENTAL DRIFT THEORY
- 18. 18 EVIDENCES OF CONTINENTAL DRIFTTHEORY PUZZLE FITTING OF CONTINENTS
- 19. 19 Fossilized remains ofMesosaurus were found in South America and Africa
- 20. 20 Do you thinkthey swam all the way across the oceans? NO!
- 21. 21 WHAT IS YOUR INFERENCEON THE POSSIBLE REASON?
- 22. 22 EVIDENCES OF CONTINENTAL DRIFTTHEORY PUZZLE FITTING OF CONTINENTS CLIMATE and GLACIERS DEPOSITS
- 23. 23 Glacial Deposit and hugebedrock found in South America, Africa, Australia and India
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- 25. Paleoclimate evidence In themodern world glaciers are found near the north and south poles. Deserts are largely found in bands that are parallel to the equator. Extensive reef complexes lie along the equator.
- 26. 26 Glacial Striations…Scratches glaciers leaveon rocks as they travel
- 27. 27 There is proofthat glaciers moved from Africa, through the Atlantic Ocean, and then on towards South America. This would be much easier if the Atlantic Ocean were not there What did you notice?
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- 29. 29 Warm weather plantshave been found in the Arctic… but it’s not warm there! Glacier deposits have been discovered in tropical and desert locations…it’s not cold there, either!
- 30. 30 How could youexplain this? why glacial deposits were found in areas where no glaciers exist today?
- 31. 31 EVIDENCES OF CONTINENTAL DRIFTTHEORY PUZZLE FITTING OF CONTINENTS ROCKS CLIMATE and GLACIERS DEPOSITS
- 32. 32 SAD FACT! Wegener hadevidence of one large land mass, he didn’t have the answers to what force (engine) “floated the plates”. He was laughed at and did not live to see his theory accepted.
- 33. 33 ROCKS Huge belts ofrocks found in Africa and South America were identical. Not only were they the same, but they would match up (age, thickness, types) if the continents were put together.
- 34. 34 • Mountains – Somemountain ranges on different contin – ents seem to match. • Ex: ranges in Canada match Norway and Sweden • Ex: Appalachian Mtn. match UK mtn
- 35. 35 WHAT PROVES THETHEORY TO BE CORRECT? Sea floor Spreading
- 36. 36 Is it possiblethat the current position of the continents will change after 100 years?
- 37. SEAFLOOR SPREADING -seafloor spreading is tectonicplates slowly move away from each other. Occurs along mid- ocean ridges. - Evidence of seafloor spreading is..
- 38. MAGNETIC STRIPES Magnetic stripesprovide evidence of sea floor spreading -striped magnetic patterns developed , Because oceanic crust pulls apart , magma rises to the surface at mid- ocean ridges.
- 39. MORE SEAFLOOR INFORMATION! •Seafloor spreading formed 270 million years ago • Broke apart about 200 million years ago • Sea floor spreading is one of the two major processes of the plate tectonics. • Volcanoes and other features that grow or fall into sea floor spreading to move and sink with the sea floor spreading over time . • the sea floor spreading on each side of a mid -ocean ridge move in different directions each side belongs to a different lithosphere plate
- 40. Is it possiblethat the continents would converge into a single landmass or supercontinent after 250 million years? The cycle of supercontinent splitting into small continents and recombining as a single landmass will continue in the next billion of years (Pangaea Proxima meaning “The next Pangaea”) Christopher Scotese
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- 42. 42 Use the wordsin formulating a stories about Continental Drift Theory.
- 43. “ Fossils Rocks Glacial deposits Puzzle Sea floorspreading Mountains 43
- 44. EVALUATION ➢ Who wasthe person who came up with the hypothesis of Continental Drift? ➢ What was the large landmass called? ➢ Name four evidences the supports Continental Drift ➢ What is the one question that needs to be answered to prove the Continental drift theory? ➢ What phenomenon proves the continental drift theory? (happens under the sea) 44
- 45. References ➢ Science Learner’sModule 1: Grade 10 ➢ Department of Education, Bureau of Secondary Education. Project EASE ➢ Integrated Science 1, Module 12: Inside the Earth. ➢ Department of Education, Bureau of Secondary Education (2013). Science ➢ Grade 8 Learner’s Module. Vibal Publishing House, Inc. ➢ Tarbuck, E.J. et al. (2009). Earth Science 12th ed. Pearson Education ➢ South Asia Pte Ltd. ➢ http://www.skoool.ie/ accessed March 3, 2014 45
- 46. Don’t Forget! Please dothe enrichment activities within the week!
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