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Q 1. Continental Drift Theory is Alfred Wegner's theory of how the super continent Pangaea broke into two big landmasses: LAURASIA & GONDWANA which in turn split into smaller pieces and drifted slowly to where they are today. |
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Q 2 Movement of convection currents in the mantle. b.Explain in detail the process of sea floor spreading. The hot mantle rises and spreads out upon hitting the Earth's crust, pushing it apart as it continues its convention current. Some magma cools and solidifies to become new sea floors. An oceanic ridge is formed. |
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Q3 a.What type of plate movement is the animation illustrating? Convergent plate movement b.What type of plates are involved in this process? An oceanic plate converges with a continental plate. c.Explain the existence of a subduction zone. When two masses converge, one of them will be pushed under the other, forming a subduction zone. d.What are the landforms resultant from this process? Fold mountains, oceanic trenches and volcanoes. |
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Q 4 Convergent plate movement b.What type of plates are involved in this process? Two oceanic plates converge and form this trench. c.Define the term trench. A long, steep-sided valley on the ocean floors, formed by convergent plate movements. |
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Q5 The plates slide pass each other as they move in opposite directions. b.What is the consequence of this process? Earthquakes are formed. |
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