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. Open pit mining & typically for coal.






2. A system involving continuous interaction of the solid Earth & the atmosphere & the oceans and living things.






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






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






5. Deep steep-sided depression in the ocean floor caused by the subduction of oceanic crust beneath either other oceanic crust or continental crust.






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






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






8. 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.






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






10. Occurs at the intersection of the water table with the ground surface.






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






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






13. The oldest eon in Earth history & extending from the origin of the Earth to about 3.9 billion years ago.






14. The pattern of water circulation from the ocean to the atmosphere to the land and back to the ocean.






15. A narrow strip of land that has water on either side and connects two larger bodies of water.






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






17. A small ice sheet.






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. A vertical conduit through the Earth's crust below a volcano & through Which magma has passed.






20. A device containing a free-swinging magnetic needle that is attracted to Earth's magnetic North Pole. Used to determine direction of travel.






21. A glaciated valley now flooded by the sea.






22. The current geologic era & which began 66.4 million years ago and continues to the present.






23. The chronological sequence of units of Earth time.






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






25. A giant structure that contains hundreds of billions of stars.






26. 1. Breach in a natural levee . 2. Deep crevice or open fracture in glacier ice.






27. A coral reef attached directly to the mainland.






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






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






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






31. A pillar formed as a stalactite and stalagmite meet.






32. The Earth's crust underlying the ocean basins which is formed at mid-oceanic ridges. It is typically 5 to 10 kilometers thick composed of basalt.






33. The elevation at which snow persists throughout the year.






34. The speed at which water flows.






35. The sudden fall of one or more large pieces of a rock from a cliff.






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






37. Produced as a wave steepens and falls forward as the wave nears the shore.






38. 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.






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






40. A sea level change due to change in load on Earth's crust.






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






42. A narrow & elongate region in which one lithospheric plate descends relative to another.






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






44. The internal resistance to flow in a liquid.






45. A small ice sheet.






46. Flat land covered with tall grass and wildflowers.






47. A measure of the size of an earthquake in terms of the damage it causes.






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






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






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