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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. Large area of extremely flat ocean floor lying near a continent and generally over 4 km in depth.






2. 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.






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






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






5. Molten rock & containing dissolved gases and suspended solid particles. At the Earth's surface & magma is known as lava.






6. The tendency of a moving object to continue in a straight line or a stationary object to remain in place.






7. Iron & aluminum & magnesium & manganese & and titanium. Ores of the abundant metals only need to be 3 - 5 times as metal-rich as average rock.






8. In a stream & the volume of water passing through a channel in a given time.






9. The height of a place above sea level.






10. Large area of extremely flat ocean floor lying near a continent and generally over 4 km in depth.






11. A curved belt of volcanic islands lying above a subduction zone.






12. 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.






13. A tool for measuring the relative clarity of water.






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






15. Refers to rock or sediments made up primarily of broken fragments of pre-existing rocks or minerals.






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






17. The peak flow of water that tops the banks of a stream channel.






18. A narrow strip of land along the margin of the ocean extending inland for a variable distance from low water mark.






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






20. A seismic body wave that involves particle motion & alternating compression and expansion & in the direction of wave propagation. It is the fastest seismic wave. compare S-wave .






21. The part of the crust that directly underlies the continents and continental shelves. Averages about 35 km in thickness & but may be over 70 km thick under largest mountain ranges.






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






23. A substance that produces positively charged hydrogen ions (H+) when dissolved in water.






24. The region of a shore that is covered at high tide and exposed at low tide.






25. The point on the Earth's surface directly above the focus of an earthquake.






26. The process by which building stone & usually in blocks or sheets & is extracted from the Earth. radiation -- (Electromagnetic radiation) -- energy that travels through space in the form of waves without the intervention of matter & as in the transp






27. Uranus is named after the Roman god of the sky. It is the seventh planet from the Sun.






28. Open pit mining & typically for coal.






29. Surficial mining & in which the valuable rock is exposed by removal of overlying rock or soil.






30. Any object that revolves around another object in space.






31. A large volume of dust-sized particles lifted high into the atmosphere.






32. 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.






33. A valley caused by extension of the Earth's crust. Its floor forms as a portion of the crust moves downward along normal faults.






34. Imaginary lines on a map or globe that measure distance in degrees north or south of the equator. Latitude lines extend horizontally & from east to west on a globe.






35. The rigid outer shell of the Earth. It includes the crust and uppermost mantle and is on the order of 100 km in thickness.






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






37. The average weather conditions of an area over many years & as measured by temperature & wind speed & and precipitation.






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






39. The weak or 'soft' zone in the upper mantle just below the lithosphere & involved in plate movement and isostatic adjustments. It lies 70 to 100 km below the surface and may extend to a depth of 400 km.






40. Highly mafic igneous volcanic rock & typically fine-grained and dark in color; rough volcanic equivalent of gabbro. Basalt is the most abundant volcanic rock in the Earth's crust.






41. A glaciated valley now flooded by the sea.






42. Property possessed by certain rocks of breaking with relative ease along parallel planes or nearly parallel surfaces in their crystal structures where the bonds are weakest.






43. A general term including both oil and natural gas.






44. Glacial deposits laid down directly by glaciers or laid down in lakes & ocean & or streams as result of glacial activity.






45. A waterway from open ocean into a lagoon.






46. The speed at which water flows.






47. The very small particles of dirt & soot & and other pollutants that are present in the air.






48. A type of thermal spring which ejects water intermittently with considerable force.






49. An abandoned meander .






50. Containing moisture.






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