PPT Science10_Lesson 8_Evidences that Support Plate Movements FINAL.pptx

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1. Online Classroom Rules

2. The Evidence For Continental Drift. Grade 10 Week 8

3. CONTENT STANDARD The learners demonstrate understanding of the relationship among the locations of volcanoes, earthquake epicenters, and mountain ranges.

4. PERFORMANCE STANDARD The learners should be able to demonstrate ways to: S uggest ways by which he/she can contribute to government efforts in reducing damage due to earthquakes, tsunamis and volcanic eruptions.

5. LEARNING COMPETENCY Enumerate the lines of evidence that support plate movement (S10ES -la-j-36.6

6. OBJECTIVES Trace the existence 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

7. RECAP SHUFFLE PUZZLE WORD 7

8. 8 a German meteorologist and geophysicist, once hypothesized that continents were once joined as a single landmass called PANGAEA F R L E D A N E E R E W G A L F R E D W E G E N E R

9. 9 O F L S S I Refer to the human, plant , and animal remains that have been preserved through time like human or animal teeth , skull , and bone fragments . F O S S I L

10. 10 E P G A N A A A supercontinent that existed during 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. Pangaea P A N G A E A

11. 11 A theory which suggests that earth’s crust is made up of the plates that interact in various ways, thus producing earthquakes, mountains, volcanoes, and other geologic features. E P T L A E C O T T I C N S P L A T E T E C T O N I C S

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13. 13 a German meteorologist and geophysicist, once hypothesized that continents were once joined as a single landmass called PANGAEA Alfred Wegener

14. 14 States that all the 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.

16. 16 EVIDENCES OF CONTINENTAL DRIFT THEORY

17. 17 The Eastern coastline of South 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 DRIFT THEORY PUZZLE FITTING OF CONTINENTS FOSSILS

19. 19 Fossilized remains of Mesosaurus were found in South America and Africa

20. 20 Do you think they swam all the way across the oceans? NO!

21. 21 WHAT IS YOUR INFERENCE ON THE POSSIBLE REASON ?

22. 22 EVIDENCES OF CONTINENTAL DRIFT THEORY PUZZLE FITTING OF CONTINENTS FOSSILS CLIMATE and GLACIERS DEPOSITS

23. 23 Glacial Deposit and huge bedrock found in South America, Africa, Australia and India

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25. Paleoclimate evidence In the modern 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 leave on rocks as they travel

27. 27 There is proof that 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?

28. 28 Climate changed when continents drifted apart.

29. 29 Warm weather plants have 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 you explain this? why glacial deposits were found in areas where no glaciers exist today?

31. 31 EVIDENCES OF CONTINENTAL DRIFT THEORY PUZZLE FITTING OF CONTINENTS FOSSILS ROCKS CLIMATE and GLACIERS DEPOSITS

32. 32 SAD FACT! Wegener had evidence 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 of rocks 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 Some mountain 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 THE THEORY TO BE CORRECT? Sea floor Spreading

36. 36 Is it possible that the current position of the continents will change after 100 years?

37. Seafloor spreading -seafloor spreading is tectonic plates slowly move away from each other. Occurs along mid-ocean ridges. - Evidence of seafloor spreading is..

38. Magnetic stripes Magnetic stripes provide 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 possible that 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 words in formulating a stories about Continental Drift Theory.

43. Fossils Rocks Glacial deposits Puzzle Sea floor spreading Mountains 43

44. EVALUATION Who was the 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’s Module 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 do the enrichment activities within the week!

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