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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. Any of various minerals prized for beauty & durability & and rarity. A few noncrystalline materials of organic origin (e.g. & pearl & red coral & and amber) also are classified as gemstones.






2. Swamp that forms in the low lying flood plain behind a levee.






3. The area immediately below the ground surface within which pore spaces are partially filled with water and partially filled with air.






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






5. 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.






6. The area bordering a stream over which water spreads when the stream tops its channel banks.






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






8. The closest galaxy to the Milky way. It is approximately 2 million light-years away.






9. The areas of & in & or constituting a city.






10. As applied to glacier ice & the process by which ice below the snow line is wasted by evaporation and melting.






11. The generally dark & more or less stable part of the organic matter in a soil & so well decomposed that the original sources cannot be identified.






12. A mass of ice & formed by the recrystallization of snow & that flows forward & or has flowed at some time in the past.






13. All of space and everything in it.






14. The very slow & generally continuous downslope movement of soil and debris under the influence of gravity.






15. Distance over which wave-forming winds blow.






16. The remains of an extremely massive star pulled into a small volume by the force of gravity.






17. The persistence of wind-formed waves after wind ceases.






18. Distance over which wave-forming winds blow.






19. Heat transport by direct transfer of energy from one particle to another & without moving the particle to a new location.






20. Temporary accumulations of sediments that collect between low and high water marks.






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






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






23. The two days of the year on which the noon sun is directly overhead at either 23.5






24. The amount of material a stream carries in suspension.






25. An area where fresh water comes into contact with seawater & usually in a partly enclosed coastal body of water; a mix of fresh and salt water where the current of a stream meets the tides.






26. The presence of layers in some rocks caused by parallel alignment of minerals.






27. The galaxy where Earth is located.






28. Synonym of intrusive. Antonym of volcanic. Applies to igneous rocks formed beneath the surface of the Earth; typically with large crystals due to the slowness of cooling.






29. The chronological sequence of units of Earth time.






30. The process by which an unconsolidated deposit of sediments is converted in to solid rock.






31. The persistence of wind-formed waves after wind ceases.






32. A cyclical pattern of movement in a fluid body such as the ocean & the atmosphere & or the Earth's mantle & driven by density variations which in turn are the result of differences in temperature from one part of the fluid to another.






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






34. The symbol used on a map to indicate directions & both cardinal and ordinal.






35. A ball of ice and dust & whose orbit is a long & narrow ellipse.






36. A region of high heat flow on the Earth's surface & thought to lie above a mantle plume .






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






38. Deposition of fine mineral particles (silt) on the beds of streams or lakes.






39. The symbol used on a map to indicate directions & both cardinal and ordinal.






40. Living parts of the environment that can renew or replace themselves.






41. A natural open space underground & large enough for a person to enter. Most commonly occur by the dissolution of soluble rocks & generally limestone.






42. A roughly circular reef with an occasional small & low & coral sand island surrounding a shallow lagoon.






43. A group of stars that appear to make a pattern in the sky. The Big Dipper is a constellation.






44. An eruption of lava that takes place from a fracture & usually without producing a cone.






45. The mass of an object divided by its volume.






46. An eruption of lava that takes place from a fracture & usually without producing a cone.






47. An era of time during the Phanerozoic eon lasting from 245 million years ago to 66.4 million ago.






48. A Hawaiian term for a lava flow that has a rough & jagged surface.






49. A geometrical form taken by a mineral & giving external expression to orderly internal atomic arrangement.






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







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