Activity 3 Head-On Collision Part A: Converging Continental Plate and Oceanic Objectives: Explain the processes that occur along convergent boundaries. Determine the consequences of colliding plate. Procdure: 1. Study Figure 10 a cross-sectional diagram of plates that are converging, and answer the question that follow Q15. What type of plate is Plate A? What about Plate B? Why do you say so? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Q16. Describe what happens to Plate A as it collides with Plate B? Why? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Q17. What do you think may happen to the leading edge of Plate A as it continues to move downward? Why? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Q18. What do you call this molten material? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Q19. What is formed on top of Plate B? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Q20. As the plates continue to grind against each other, what other geologic event could take place? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Conclusion: ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Part B: Convergence of Two Oceanic Plates Procedure: 1. Study Figure 11. It shows a cross-section of two converging oceanic plates. 2. Using your knowledge gained from the previous activity, identify the geologic events or features resulting from this collision. Q21. What are the geologic processes/events that will occur because of this plate movement? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Q22. What geologic features might form at the surface of Plate A? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Q23. If the edge of Plate A suddenly flicks upward, a large amount of water may be displaced. What could be formed at the surface of the ocean? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Conclusion: ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Part C: Two Continental Plates Converging Materials: modeling clay 2 blocks of wood Paper Procedure: 1. On a piece of paper, flatten the modeling clay with the pam of your hand 2. Cut the clay into four strips; each strip should be 0.5 cm thick, 4 cm wide, and 12 cm long. 3. Put 4 strips one on top of the other. 4. Place a block of wood at each end of the clay strips and slowly push the two blocks together. Observe what happens to the clay. Q24. What happened to the strips of clay as they were pushed from opposite ends? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Q25. If the strips of clay represent the Earth’s lithosphere, what do you think is formed in the lithosphere? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Q26. What other geologic event could take place with this type of plate movement aside from your answer in Q25? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Conclusion: ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________
