Plate tectonics Core Assignment 3 Answer

Plate tectonics Core Assignment 3 Answer

• 1.
  Bartley Secondary School UpperSecondary Geography Core Assignment 3 [Mark Scheme] - 1 - Name: ________________________________ ( ) Class: _____ Date: ___________ Marks Topic: Plate Tectonics Skills/Knowledge: - Explaining and applying a concept - Drawing annotated diagrams using examples - Drawing well-labelled diagramsbased on examples Question Overview: 1) With reference to Fig. 1, explain why the rocks found in the centre of the Atlantic Ocean are younger than the rocks found nearer the North American Plate and the Eurasian plate. [3] 2) Draw an annotated diagram to describe the processes and landforms at a named oceanic-oceanic convergent plate boundary. [5] 3) Use a well-labelled diagram to describe the formation of the Sunda Trench. [6] Teacher’s General Feedback: Observation Tick and/or Comments Lack content knowledge or incorrect referencing Misconception of knowledge Misinterpretation of question Mis-analysis of question marks Awkward expression of answer Mismanagement of time / effort Student Reflection: 1 Star (what way you did well) 1 Wish (what you could improve on based on teacher’s feedback) This has to do with how you answered. Do not just blindly copy the observation above! Additional comments from student: 14
• 2.
  Bartley Secondary School UpperSecondary Geography Core Assignment 3 [Mark Scheme] - 2 - 1 Study Fig. 1, which shows a cross-section of happens at a named oceanic-oceanic plate divergent boundary. Cross Section of Oceanic-Oceanic Divergence Fig. 1 With reference to Fig. 1, explain why the rocks found in the centre of the Atlantic Ocean are younger than the rocks found nearer the North American Plate and the Eurasian plate. [3] - At an oceanic-oceanic divergent boundary, magma rises at the zone of divergence due to fractures and new ocean floor is created in the centre of the Atlantic Ocean i.e. the Mid-Atlantic Ridge. - As the plates continue to diverge, more magma rises at the zone of divergence and creates even newer sea floor, while the older one diverges further away from the divergent zone. - As a result, the rocks in the centre of the Atlantic Ocean, closest to the divergent zone, would be younger than those further away, which have been formed earlier. 2 Draw an annotated diagram to describe the processes and landforms at a named oceanic-oceanic convergent plate boundary. [5] Diagram to show short annotations of the following: - Movement of plates: converging towards each other - Names of plates: Pacific Plate, Philippine Plate - Type of plate: oceanic plate, oceanic plate (denser Pacific plate subducting under Philippine plate) - Processes and landforms at boundary: subduction zone, Mariana trench, melting of subducted crust - Processes and landforms away from boundary: formation of volcanoes above rising magma from subducted crust, Mariana islands 3 Use a well-labelled diagram to describe the formation of the Sunda Trench. [6] Max 3 marks for diagram; Max 3 marks for description. - Diagram to show labels of: Sunda Trench, Subduction Zone, Australian Plate, Eurasian Plate, Arrows showing movement of plates, oceanic crust, continental crust - The Australian plate collides with the Eurasian plate at a converging plate boundary where the plates move toward each other - The denser oceanic Australian plate subducts under the less dense continental Eurasian plate - At the point of subduction, the Sunda Trench is formed