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






2. An icicle-shaped accumulation of dripstone hanging from cave roof.






3. A steep-sided rounded extrusion of highly viscous lava squeezed out from a volcano and forming a dome-shaped or bulbous mass above and around the volcanic vent. The structure generally develops inside a volcanic crater.






4. A downward distortion or dimple in the water table that forms as a well pumps water faster than it can flow through the aquifer.






5. Till deposited from main body of glacier during ablation.






6. Extending across a continent.






7. A division of geologic time next shorter than a period. Example: the Pleistocene epoch is in the Quaternary period.






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






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






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






11. 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.






12. 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.






13. A building that contains one or more telescopes.






14. A small ice sheet.






15. An individual grain or constituent of a rock.






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






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






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






19. To change back and forth uncertainly.






20. A waste material that contaminates air & water & or soil.






21. The portion of the continental margin that lies between the abyssal plain and the continental slope. The continental rise is underlain by crustal rocks of the ocean basin.






22. The concept of a sequence of events involving the formation & alteration & destruction and reformation of rocks as a result of geologic processes.






23. 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






24. The science that deals with the study of the planet Earth--the materials of which it is made & the processes that act to change these materials from one form to another & and the history recorded by these materials; the forces acting to deform the ou






25. Lacking in rainfall & very dry.






26. 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.






27. Any natural concentration of a valuable material in the Earth's crust & whether that material can be extracted profitably or not.






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






29. A stone or boulder & glacially transported from place of origin and left in an area of different bedrock composition.






30. 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.






31. An astronomical instrument for measuring angles & primarily altitude of celestial bodies to determine latitude.






32. The point on the Earth's surface that is directly above the focus of an earthquake.






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






34. A broad & deep & generally straight furrow carved in bed rock by the abrasive action of debris embedded in a moving glacier. Larger and deeper than a glacial striation.






35. The concept of a sequence of events involving the formation & alteration & destruction and reformation of rocks as a result of geologic processes.






36. A steep or vertical cliff & either above or below sea level.






37. 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.






38. Any accumulation of material & by settling from water or air & chemical precipitation & evaporation from solution & etc.






39. A supercontinent that existed from the the end of the Permian to the Jurassic & 300 to 200 million years ago & assembled from large continents like Euramerica & Gondwana & and Siberia & as well as smaller landmasses like the Cathaysian and Cimmerian






40. Geologic time expressed in years before the present.






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






42. The study of earthquakes & and of the structure of the Earth by both natural and artificially generated seismic waves.






43. A lake in an abandoned meander.






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






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






46. A unit of length used in sea navigation based on the length of 1 minute of arc on a great circle. On Earth & 1 minute of latitude.






47. To wash or scrub away.






48. The level of light that penetrates through water.






49. A disease-causing organism or entity & such as a bacterium or virus.






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