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






2. Any porous and permeable rock that yields oil or natural gas.






3. An informal term to include all geologic time from the beginning of the Earth to the beginning of the Cambrian period 570 million years ago.






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






5. A building that contains one or more telescopes.






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






7. 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.






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






9. The perpendicular or very steep descent of a stream.






10. 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






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






12. Scratches & or small channels & gouged by glacier action. Occur on boulders & pebbles & and bedrock. Striations along bedrock indicate direction of ice movement.






13. A comet that passed Earth in 1997 and won't return to the inner solar system until the year 4377.






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






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






16. The dust-sized & sharp-edged & glassy particles resulting from an explosive volcanic eruption.






17. Geologic time expressed in years before the present.






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






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






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






21. A group of islands; an expanse of water with scattered islands.






22. The height of a place above sea level.






23. 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.






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






25. A reverse fault on which the dip angle of the fault plane is 15 degrees or less.






26. An abandoned meander .






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






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






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






30. Distance over which wave-forming winds blow.






31. All unconsolidated materials above bedrock. Natural earthy materials on the Earth's surface & in places modified or even made by human activity & containing living matter & and supporting or capable of supporting plants out of doors.






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






33. 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.






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






35. Destruction of the ozone layer caused by the release of CFC's (chlorofluorocarbons) into the atmosphere which react chemically with ozone and break it down into different gases.






36. A small & dust-bearing whirlwind.






37. Any porous and permeable rock that yields oil or natural gas.






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






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






40. A sharp bend & loop or turn in a stream's course. When abandoned & it is called a meander scar or an oxbow.






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






42. Banks of sand and silt along stream bank built by deposition in small increments during successive floods.






43. A study designed to collect critical data to be used for comparison or as a control in a later study.






44. A flat & dry plain covered with short grass.






45. An eon of geologic time extending from about 3.9 billion years to 2.5 billion years ago.






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






47. Mercury is named after the Roman messenger of the gods. It is the closest to the Sun.






48. The process of removing metal from ore.






49. The line that separates one drainage basin from another.






50. Heat extracted from the Earth for use as an power source.