Test your basic knowledge |

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. Lacking in rainfall & very dry.






2. Long narrow beaches separated in many places from the mainland by lagoons.






3. That portion of the resources for a valuable mineral commodity that can be extracted from the Earth at a profit today.






4. Bent rock strata.






5. An era of geologic time lasting from 570 to 245 million years ago.






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






7. The attractive force between two objects; its magnitude depends on their masses and the distance between them.






8. Materials that are found in nature that are useful or necessary for people to live.






9. Any form of water & such as rain & sleet & or snow & that falls to Earth's surface.






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






11. The principle that states the processes operating to change the Earth in the present also operated in the past.






12. 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






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






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






15. 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.






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






17. A sedimentary rock made up of chemical sediments. Example: rock salt.






18. The most recent eon of geologic time beginning 570 million years ago and continuing to the present.






19. The precipitation that runs directly off the surface to stream or body of standing water.






20. 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.






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






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






23. Any place where bedrock is visible on the surface of the Earth.






24. A ridge of high water associated with a hurricane and which floods over the shore .






25. Formed when an organism is flattened (compressed) and a thin film of organic material from its body is left in the rock.






26. A low & nearly flat accumulation of sediment deposited at the mouth of a river or stream & commonly triangular or fan-shaped.






27. A rock changed from its original form and/or composition by heat & pressure &shearing stress & or chemically active fluids & or some combination of them.






28. Distance over which wave-forming winds blow.






29. A collection of maps.






30. A chuck of rock or dust in space.






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






32. A thick layer of soil.






33. A protective wall built offshore and usually parallel to the shore.






34. 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.






35. An individual grain or constituent of a rock.






36. A minor tremor that precedes an earthquake. An increase in seismicity may signal that a major release of strain energy is about to occur.






37. Glacial drift composed of rock fragments that range from clay to boulder size and randomly arranged without bedding.






38. Flat land covered with tall grass and wildflowers.






39. Pertaining to clastic material formed by volcanic explosion or aerial expulsion from a volcanic vent.






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






41. A commonly used scale of earthquake intensity.






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






43. A rigid segment of the Earth's lithosphere that moves horizontally and adjoins other plates along zones of seismic activity. Plates may include portions of both continents and ocean basins.






44. 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.






45. Objects revolving around the sun that are too small and too numerous to be considered planets.






46. Lava extruded beneath water characterized by pillow shapes.






47. A vent in the surface of the Earth & from which lava & ash & and gases erupt.






48. A large area with common features that set it apart from other areas.






49. A thickened elevated region of Earth's crust that is mainly (but not entirely) above sea level.






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