This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Geography Chapter 2 The Earth'S Structure – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Geography Chapter 2 The Earth'S Structure Quiz 1 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Deposits of sand and mineral fragments, laid down by water A) Sediments. B) Silicates. C) Continents. D) None of the above. Show Answer Correct Answer: A) Sediments. 2. Colder, more dense magma near the crust ..... A) Rises. B) Sinks. C) All the above. D) None of the above. Show Answer Correct Answer: B) Sinks. 3. What is HALITE ROCK? A) Rock salt. B) Sea salt. C) One of the Igneous rocks. D) One of the Metamorphic rocks. E) One of the Sedimentary rocks. Show Answer Correct Answer: A) Rock salt. 4. The Great Rift Valley in Africa and the Mid-Atlantic Ridge in the Atlantic Ocean are both results of this type of plate boundary A) Divergent. B) Transform. C) Convergent. D) None of the above. Show Answer Correct Answer: A) Divergent. 5. The core (outer core and inner core) are made of two metals called: A) Iron and magnesium. B) Iron and lithium. C) Iron and nickel. D) Nickel and copper. Show Answer Correct Answer: C) Iron and nickel. 6. Which layer of the Earth is solid iron and nickel? A) Crust. B) Outer core. C) Inner core. D) Mantle. Show Answer Correct Answer: C) Inner core. 7. Which layer of the Earth is made up of solid rock and is divided into several large and small pieces called tectonic plates? A) Atmosphere. B) Hydrosphere. C) Mesosphere. D) Lithosphere. Show Answer Correct Answer: D) Lithosphere. 8. The oceanic crust is most like ..... in composition A) Granite. B) Basalt. C) Sand. D) Iron. Show Answer Correct Answer: B) Basalt. 9. Solid ball of mostly iron and nickel: A) Upper Mantle. B) Lower Mantle. C) Outer Core. D) Inner Core. Show Answer Correct Answer: D) Inner Core. 10. Gutenberg Discontinuity begins at the depth of ..... Km. A) 2800. B) 5600. C) All the above. D) None of the above. Show Answer Correct Answer: A) 2800. 11. Sphere of rock A) Lithosphere. B) Mesosphere. C) Atmosphere. D) Hydrosphere. Show Answer Correct Answer: A) Lithosphere. 12. The layer of the atmosphere that has the function of reflecting radio waves because it contains the ions is ..... A) Exosphere layer. B) Thermosphere layer. C) Troposphere layer. D) Stratosphere layer. Show Answer Correct Answer: B) Thermosphere layer. 13. Explain how the movement of Earth's crustal plates can lead to the formation of mountains. A) Plates move apart, creating valleys. B) Plates slide past each other, causing earthquakes. C) Plates collide, pushing the crust upwards. D) Plates sink into the mantle, forming trenches. Show Answer Correct Answer: C) Plates collide, pushing the crust upwards. 14. Which type of crust is produced by seafloor spreading? A) Continental. B) Convergent. C) Oceanic. D) Volcanic. Show Answer Correct Answer: C) Oceanic. 15. Where is heat and pressure the greatest in the Earth? A) Crust. B) Outer core. C) Mantle. D) Inner core. Show Answer Correct Answer: D) Inner core. 16. SIAL floats over SIMA. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 17. What are the Earth's three main layers? A) Core, mantle, surface. B) Core, mantle, crust. C) Inner core, outer core, mantle. D) Upper mantle, lower mantle, crust. Show Answer Correct Answer: B) Core, mantle, crust. 18. The three main layers of the Earth are crust, mantle, and core. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 19. Convection Currents happen because of A) The heat from the core. B) Tectonic plates moving. C) Gravity. D) None of the above. Show Answer Correct Answer: A) The heat from the core. 20. Which layer of the core is solid? A) Inner. B) Outer. C) All the above. D) None of the above. Show Answer Correct Answer: A) Inner. 21. The point on which the vibrations of the earthquake begin to spread: A) Focus. B) Epicenter. C) All the above. D) None of the above. Show Answer Correct Answer: B) Epicenter. 22. True or False? The Earth's tectonic plates move because of convection currents in Earth's mantle beneath the lithosphere. A) True. B) False. C) I am not sure. D) None of the above. Show Answer Correct Answer: A) True. 23. Melted rock on Earth's surface A) Crust. B) Lava. C) Mantle. D) Magma. Show Answer Correct Answer: B) Lava. 24. Earth's temperature increases with depth. Which of the following is a result of the motion of materials caused by high temperatures in Earth's mantle? A) Earthquakes and volcanoes. B) Radioactive atoms in minerals. C) Ocean tides. D) Erosion and deposition. Show Answer Correct Answer: A) Earthquakes and volcanoes. 25. What causes day and night on Earth? A) Rotation. B) Atmospheric pressure. C) Tidal forces. D) Revolution. Show Answer Correct Answer: A) Rotation. 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