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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. The reflection of light on a given mineral's surface & classified by intensity and quality.






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






3. The direction & north (normal) or south (reversed) & that a magnetic compass needle points.






4. The partial or complete blocking from view of one object by another.






5. A narrow & steep-walled depression in the ocean floor & much deeper than the adjacent ocean and associated with a subduction zone.






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






7. 1. A low & bowl-shaped area of land surrounded by higher lands. 2. any large depression in which sediments are deposited.






8. The amount of dissolved salt in water.






9. An area of land that delivers runoff water & sediment & and dissolved substances to surface water bodies & such as rivers or lakes. All watersheds consist of boundaries & a basin and collection areas.






10. Bent rock strata.






11. The zone below the zone of aeration in which all pore spaces are filled with water.






12. The solid innermost part of the core with a diameter of a little over 1 &200 km.






13. The line formed by the intersection of the axial plane of a fold with a bedding plane & marking where the bed shows its maximum curvature.






14. A large ridge or mound-like structure within a body of water that is built by calcareous organisms such as corals & red algae & and bivalves.






15. A glaciated valley now flooded by the sea.






16. Gases that can be dissociated by solar radiation & which releases chlorine & which in turn destroys ozone.

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17. Rock formed from the accumulation of sediment & Which may consist of fragments and mineral grains of varying sizes from pre-existing rocks & remains or products of animals and plants & the products of chemical action & or mixtures of these.






18. The rise and fall of sea level caused by the gravitational pull of the Sun and Moon on the Earth.






19. Sediments produced directly by the life processes of plants or animals.






20. A blanket of wind-driven sand with an upper surface about a meter above ground level.






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






22. A segment of an active fault zone that has not experienced a major earthquake during a time period when most other segments of the zone have. They are generally regarded as having a higher potential for future earthquakes.






23. A conical volcano formed by the accumulation of pyroclastic debris around a vent.






24. The portion of the continental margin that extends as a gently sloping surface from the shoreline seaward to a marked change in slope at the top of the continental slope . Seaward depth averages about 130 m.






25. Any solid material that has settled out of a state of suspension in liquid.






26. 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






27. Woodland that usually gets at least 100 inches of rain each year.






28. Either the northern or southern half of the Earth as divided by the equator & or the eastern or western half as divided by a meridian.






29. A portable time keeper with a mechanism for ensuring accuracy and adjusting itself & used for determining longitude at sea.






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






31. Lava extruded beneath water characterized by pillow shapes.






32. An individual grain or constituent of a rock.






33. 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.






34. Reduction of pore space between individual particles as the result of overlying sediments or of tectonic movements.






35. A lake in an abandoned meander.






36. An ingredient in a food or other substance that nourishes or promotes growth.






37. The transformation of a soil from a solid to a liquid state as the result of increased pore pressure.






38. 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






39. A sea level change due to change in load on Earth's crust.






40. Fossils formed when water containing minerals leaks into a mold. The minerals harden to form a copy of the original structure or organism.






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






42. A mudflow composed chiefly of pyroclastic material on the flanks of a volcano.






43. A mound or ridge of sediment deposited by a glacier.






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






45. The prediction that climate will warm as a result of the addition to the atmosphere of humanly produced greenhouse gases.






46. Where two plates are moving in opposite directions as in a mid-ocean ridge.






47. A soft compact calcite & CaCO3 & with varying amounts of silica & quartz & feldspar & or other mineral impurities & generally gray-white or yellow-white and derived chiefly from fossil seashells.






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






49. A permeable region of rock or soil through which ground water can move.






50. A large & basin-shaped volcanic depression & more or less circular in form. Typically steep-sided & found at the summit of a shield volcano.






Can you answer 50 questions in 15 minutes?



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