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B. MULTIPLE CHOICE: Directions: Read the statement carefully. Choose the letter of the correct answer and write it on your yellow paper. (Basahing mabuti ang mga sumusunod na pahayag. Piliin ang tamang sagot at isulat sa inyong papel. 6. Which of the following statement that best describe the causes of convection currents in the Earth’s mantle a. tectonic plate movement c. more dense cooler magma moving upward b. less dense hot magma moving upward d. less dense hot magma moving downward 7. The lithospheric plates are believed to be moving slowly. What is the driving force that facilitates this movement? a. gravitational force of the moon c. convection current in the mantle. b. magnetic force at the poles d. the force in the atmosphere 8. What do you call the process involved in the tectonic movements where the weight of the uplifted ridge pushes the oceanic crust toward the trench at the subduction zone? a. ridge push b. slab pull c. trench push d. oceanic pull 9. A warm mantle currents drive and carry plates of lithosphere along a like a conveyor belt. a. Slab Pull c. Magnetic Reversal b. Ridge Push d. Mantle Convection current 10.What do you call the process involved in the tectonic movements where the weight of subducting plate pull the trailing slab at the subduction zone? a. ridge push b. slab pull c. trench push d. oceanic pull
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