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Earth Science

Subject : science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. An instrument that merely indicates the occurrence of an earthquake.






2. The point on the Earth's surface where a magnetic needle points vertically downward (north magnetic pole) or vertically upward (south magnetic pole).






3. The sum of the processes that result in the wearing away or the progressive lowering of the Earth's surface by weathering & erosion & mass wasting & and transportation.






4. A waterway from open ocean into a lagoon.






5. A landscape that develops from the action of ground water in areas of easily soluble rocks. It is usually characterized by caves & underground drainage and sinkholes.






6. A building that contains one or more telescopes.






7. The environment where a particular plant or animal is normally found.






8. Open pit mining & typically for coal.






9. The low spot between two successive waves.






10. A seismic body wave that involves particle motion from side to side & perpendicular to the direction of wave propagation. S-waves are slower than P-waves and cannot travel through a liquid.






11. The pattern of water circulation from the ocean to the atmosphere to the land and back to the ocean.






12. A slide involving a downward and usually sudden movement of newly detached segments of bedrock sliding or slipping over an inclined surface of weakness such as a bedding plane & fault plane & or joint surface.






13. A type of volcanic eruption characterized by nuees ardentes and the development of lava domes.






14. The vertical distance between the crest and adjacent trough of a wave.






15. A flood that rises and falls very rapidly.






16. A volcano in the shape of a flattened cone & broad and low & built by very fluid flows of basaltic lava.






17. The breaking away of ice from the front of the glacier when it ends in a lake or an ocean. Produces icebergs.






18. The green pigment in the cells of many plants that enables them to use sunlight to convert carbon dioxide and water into carbohydrates in the process called photosynthesis.






19. Lies half way between the north and south magnetic poles.






20. A lake of lava & usually basaltic & in a volcanic caldera.






21. A delta formed at both sides of a tidal inlet.






22. A collection of maps.






23. The process by which ocean floors spread laterally from crests of main ocean ridges. As material moves laterally from the ridge & new material replaces it along the ridge crest by welling upward from the mantle.






24. Mars is named after the Roman god of war. It is the fourth planet from the Sun.






25. The initial point within the Earth that ruptures in an earthquake & directly below the epicenter. The point within the Earth which is the center of an earthquake & at which strain energy is first released and converted to elastic wave energy.






26. The primary division of geologic time which are & from oldest to youngest & the Hadean & Archean & Proterozoic & and Phanerozoic eons.






27. Lacking in rainfall & very dry.






28. A device containing a free-swinging magnetic needle that is attracted to Earth's magnetic North Pole. Used to determine direction of travel.






29. A stone or boulder & glacially transported from place of origin and left in an area of different bedrock composition.






30. The oldest eon in Earth history & extending from the origin of the Earth to about 3.9 billion years ago.






31. One of several rock-forming minerals that contain at least 95% silica (quartz). and usually one or more other common elements.






32. An earthquake that follows and has its epicenter near a larger earthquake.






33. The great circle on the Earth's surface passing through The North and South Poles & which is considered 0 degrees longitude. The prime meridian passes through Greenwich & England & and is used as a reference point for measuring longitude east and w






34. A naturally occurring inorganic solid that has a well-defined chemical composition and in which atoms are arranged in an ordered fashion.






35. An isolated & steep-sided & rocky mass or island just offshore from a rocky headland & usually on a shore platform.






36. A broad & mound-like mass of glacier ice that usually spreads radially outward from a central zone.






37. A disease-causing organism or entity & such as a bacterium or virus.






38. A large area of flat or nearly flat land.






39. The processes (mechanical and chemical) responsible for the wearing away & loosening & and dissolving of materials of the Earth's crust.






40. The surface between the zone of saturation and the zone of aeration.






41. A river that is able to maintain its flow through a desert because of water received from outside the desert.






42. A stone or boulder & glacially transported from place of origin and left in an area of different bedrock composition.






43. An astronomical instrument for measuring angles & primarily altitude of celestial bodies to determine latitude.






44. 1. A steep-walled & usually conical depression at the summit or on the flanks of a volcano & resulting from the explosive ejection of material from a vent. 2. A bowl-shaped depression with a raised & overturned rim produced by the impact of a meteori






45. Weathering processes that are the result of chemical reactions. Example: the transformation of orthoclase to kaolinite.






46. A natural depression in the surface of the land caused by the collapse of the roof of a cavern or subterranean passage & generally occurring in limestone regions.






47. Turbulent stream water flow down a steep gradient & but not as steep as in a waterfall.






48. Ratio between weight of given volume of material and weight of equal volume of pure water.






49. A vertical conduit through the Earth's crust below a volcano & through Which magma has passed.






50. Flat land covered with tall grass and wildflowers.







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