Earth Science Past Paper PDF

# Earth Science 1. Which of the following is not considered as criteria to determine an index fossil? - The fossil must have lived for a long time 2. Approximately 90% of the most important events in Earth’s history happened in which era. - Precambrian 3. If Pangea is the supercontinent be...

# Earth Science 1. Which of the following is not considered as criteria to determine an index fossil? - The fossil must have lived for a long time 2. Approximately 90% of the most important events in Earth’s history happened in which era. - Precambrian 3. If Pangea is the supercontinent before the Mesozoic era, what is the biggest body of water that covers the Pangea? - Phantalassa 4. Archean eon is the time when the Earth cooled down and able to support continents and oceans while Phanerozoic eon is the time when rapid expansion of life occurred. Which of the statements is/are true? - Both statements are true. 5. Jose is a Grade 11 student and asked to arrange the correct order of geologic time in his science class. Which of the following order is correct? - eon>era>period>epoch 6. What is the science that deals with all the characteristics of layered rocks and how these rocks relate to time? - Stratigraphy 7. Which law of stratigraphy states that any rock, fault, or structure that cuts another rock or other structure is younger than the rock or structure it cuts? - Law of cross-cutting relationships 8. Which is true about sedimentary rocks? - Formed from particles of older rocks that have been broken apart by water and wind. - May contain remnants from dead animals and plants settled at lake or sea bottom. - With the passage of time and the accumulation of more particles, and often with chemical changes, the sediments at the bottom of the pile become rock. 9. Charles Walcott discovered a fossil with a soft body like a worm, five eyes, and a long nose like a vacuum cleaner hose. In which Paleozoic era does he discover the said fossil? - Cambrian 10. Which of the following refers to living fossils are organisms that have existed for a tremendously long from the Cambrian period up to the present without changing very much. - Lingulata brachiopods 11. Which of the following best describes weathering? - The mechanical or chemical process by which rocks are broken down. 12. How does gravity contribute to weathering? - By abrasion of the rocks 13. Which of the following is NOT an example of physical weathering? - Plant that grows on the cracks of the rocks 14. The heat from the crust down to the inner core due to several reasons. Which of the following words will best complete the thought of the given statement? - Increases 15. Each layer of the Earth has its own distinct features, composition, properties, and characteristics. Which among the layers of the earth has the highest temperature? - The core which has decaying isotopes. 16. Which of the following sets of rocks is arranged in order of increasing metamorphic grade? - shale-slate-schist 17. Which of the following statements about the metamorphism of limestone is FALSE? - With increasing netamorphism, foliation develops 18. Mountains are result of high-impact stress caused when two plates collided. What kind of stress caused it to from? - Compressional stress 19. Rock undergoes changes when it is stressed. How does the rock behave when a tension stress acted on it? - It is pulled apart or lengthen 20. Which of the following type of stress is exerted in convergent plate boundaries? - Compressional stress 21. What will most likely occur during juvenile stage of the ocean basin? - Formation of narrow seas with matching coasts 22. Which of the following statements is INCORRECT about plate movements? - The movement of plates is not a source of earthquakes 23. Earth’s surface is dramatically reshaping itself in an endless, slow-motion movement. Which of the following choices will best describe the thought of th given sentence? - It connotes correct information on how the surface of the earth may change over time. 24. If the figure is a movement of two continental plates, what land formation can be formed? - Mountain 25. What do you call the process where sediment is glued together when minerala are dissolved? - Sedimentation 26. Which is NOT true about the age pattern on the seafloor? - The youngest seafloor can be found towards the edges of the ocean, near the eastern and western continents. 27. Where do you expect to find the oldest rock on the ocean floor? - Further away from the ridge 28. How did the scientists discover that rocks father away from the mid-ocean ridge were older than those near it? - By determining the age of rock samples obtained by drilling on the seafloor 29. Where does the upwelling process most likely occur in the seafloor? - Mid-oceanic ridge 30. What happens during embryonic stage of ocean basin? - Formation of complex system of linear rift valleys on continent 31. Which of the following describes the law of superstition? - Older layers are generally deeper than more recent layers 32. Which of the following choices best describes the statements below? - The layers of rocks are piled one on top of the other - Sedimentary rocks are formed particles by particles and bed by bed 33. Which techniques uses the half-life of atoms to figure out their age in the rock layers? - Radiometric 34. What method has helped scientists to determine the exact age of Earth? - Absolute dating 35. Which of the following is true? - As the number of parent atoms decreases, the number of daughter atoms decreases 36. Different elements with varying properties comprise the layers of the Earth. Which layer of the Earth has the highest amount of molten state iron? - The core which is the hot and dense inner most layer of the earth 37. Which geologic process takes place inside cracks and infiltrates the upper mantle allowing liquids and gases to reach the surface of the earth? - Volcanism 38. Why does partial melting of rocks occur on the earth's mantle? - Because rocks' composition has different melting points 39. Geologist found out that rocks melted under various pressures. Which of the following best describes how pressure affects the melting of rocks? - The lower the pressure, the higher the melting point 40. Which of the following is the process exhibited by parallel alignment of mica in a metamorphic rock? - foliation