#2 Different types of Plate Boundaries.pptx

SCIENCE 10 DIFFERENT TYPES OF PLATE BOUNDARIES

1. Different types of Plate Boundaries

2. is a scientific theory that explains how major landforms are created as a result of Earth’s subterranean movements.  Theory of Plate Tectonic

3. The History

4.  proposed the theory of continental drift – the idea that Earth’s continents move. Despite publishing a large body of compelling fossil and rock evidence for his theory between 1912 and 1929, it was rejected by most other scientists. It was only in the 1960s that continental drift finally became part of mainstream science. Alfred Wegener

5. the movement of continents resulting from the motion of tectonic plates. Continental Drift

6. Activity Materials: List of locations of earthquakes and volcanoes World map with latitude and longitude Red and blue pen ruler

7. Activity                

8. Procedure Using the data in the table of locations of earthquakes and volcanoes, plot the location of each earthquake on the world map. Use your red pen to mark a dot on each location. Plot the location of each volcano on the world map. Use blue pen to draw a small triangle on each volcano location. Plot the locations of the recent earthquakes and volcanic eruptions that occurred. Use red pen for earthquakes and blue pen for volcanoes. Answer the guide questions.

9. Guide questions Where can you find the earthquakes? How will you describe the locations of earthquakes on the surface of the earth? Where can you find the volcanoes? How will you describe the locations of volcanoes on the surface of the earth? Based on your findings, how are earthquakes and volcanoes distributed all over the surface of the earth? How is the location of earthquakes and volcanoes related to the lithospheric plates?

10. What is Plate Boundary? A  plate boundary  is the location where two tectonic plates meet.  there are 3 types of plate boundaries: Convergent boundary, divergent boundary and transform boundaries

11. Instructions: Match the plate boundary type to its correct description. Write the letter of the description in the blank before each boundary type . Activity Plate Boundary Match-Up

12. A. Descriptions A. Plates move away from each other; magma rises and forms new crust. B. Plates slide past each other; may cause earthquakes. C. Plates move toward each other; one may sink, causing volcanoes and mountains. B. Boundary Types ____ Convergent ____ Divergent ____ Transform

13. Is when 2 lithospheric plates move away from each other Divergent Plate Boundary

14. Continental-Continental Oceanic – Oceanic Two types of Divergent boundary

15. Mid-Atlantic Ridge magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust Oceanic- Oceanic

16. Rift Valley Is a valley created between two divergent plate boundaries.

17. East African Rift System

18. Convergent Boundary the two plates move towards each other. There are 3 types of convergent boundary: 1. Oceanic-Continental Convergent Boundary 2. Two Oceanic Plates Convergent Boundary 3. Two Continental Plate Convergent Boundary

19. When a dense oceanic crust meets with a continental crust, the denser oceanic crust is subducted underneath the continental crust. The oceanic plate is forced down into the mantle in a process known as " subduction ." As the oceanic plate descends, it is forced into higher temperature environments Oceanic-Continental Convergent Boundary

20. Subduction Zone

21. Subduction Process

22. Subduction Process

23. Ocean-Ocean Convergent Boundary

24. Continental-Continental Convergent Boundary

25. Transform Plate Boundary Two plates may slide past each other in opposite directions

26. How we celebrate

27. Identify whether the following set of pictures is a result of a not. Tectonic Plate Boundary” or “Not a Plate Boundary.” Activity 3: Sorting Challenge – Boundary or Not?

28. Plate boundary? Himalayan Mountains  Yes  No Convergent Boundary (Continental-continental)

29. Plate boundary? San Andreas Fault (USA)  Yes  No Transform Boundary

30. Plate boundary? Mariana Trench  Yes  No Convergent Boundary (oceanic-oceanic subduction)

31. Plate boundary? Amazon River  Yes  No

32. Plate boundary? Philippine Trench  Yes  No Convergent Boundary (oceanic-continental subduction)

33. Plate boundary? East African Rift Valley  Yes  No Divergent Boundary (continental-continental)

34. Plate boundary? Mt. Mayon (Philippines)  Yes  No Convergent Boundary (continental-oceanic)

35. Plate boundary? Mid-Atlantic Ridge  Yes  No Divergent Boundary (oceanic-oceanic)

36. Plate boundary? Nile River  Yes  No

37. Plate boundary? Japan Trench  Yes  No Convergent Boundary (oceanic-continental)

38. If two oceanic plates converge, then... “If-Then” Reasoning Challenge” a trench and volcanic island arc form because one plate subducts under the other. Example: Mariana Trench

39. If plates slide past each other, then... “If-Then” Reasoning Challenge” earthquakes occur due to friction and pressure. Example: San Andreas Fault.

40. If a continental plate and an oceanic plate meet, then... “If-Then” Reasoning Challenge” the denser oceanic plate subducts, forming a trench and volcanoes. Example: Philippine Trench and Mt. Mayon

41. If two continental plates collide, then... “If-Then” Reasoning Challenge” large mountain ranges form because neither plate subducts. Example: Himalayas

42. If plates move away from each other, then... “If-Then” Reasoning Challenge” new crust forms as magma rises, creating ridges or rift valleys. Example: Mid-Atlantic Ridge.

43. Direction of movement Motion Type of boundary Example Two oceanic plates come together, one sliding underneath Continental-Oceanic Convergent Boundary San Andreas Fault Mountain ranges ANd plateau

44. Activity Why do you think it is important for us to identify areas which are prone to earthquakes?

45. QUIZ Directions : Write the correct word/s from the choices inside the parenthesis to complete the sentence in each given item. 1. The relative motion of the plates at the transform fault boundary is ________ (moving away, sliding past) each other. 2. The relative motion of the plates at the divergent boundary is moving ___________ (away, toward) each other. .

46. 3. The relative motion of the plates at the convergent boundary is moving ___________ (away, toward) each other 4. At the convergent boundary between oceanic plate and continental plate, ___________ (tension, subduction) zone is formed. 5. ___________ (Mid-ocean ridge, Rift valley) is formed by divergence of two oceanic plates.

47. Location Number Observed Feature (e.g., trench, ridge, fault) Type of Plate Boundary Present Hazard (Volcano or Earthquake Zone) 1 2 3 4 5

48. MAP OF CONCEPTUAL CHANGE Before Question After    What are the different types of plate boundaries, and how do they affect Earth’s surface features? (Addresses: types of plate boundaries; processes at boundaries)      Where are most earthquakes, volcanoes, and mountain ranges found, and why are they located there? (Addresses: distribution of geologic features; relation to boundaries)