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






2. A deposit of partly decayed plant remains in a very wet environment; marsh or swamp deposit of plant remains containing more than 50 percent carbon.






3. A collection of maps.






4. Of or relating to or containing basalt & a dark & dense & extrusive rock that has a silica content of 40% to 50% and makes up most of the ocean floor.






5. A zone in the Earth between 400 and 670 km below the surface separating the upper mantle from the lower mantle.






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






7. The great circle on the Earth's surface passing through The North and South Poles & which is considered 0 degrees longitude. The prime meridian passes through Greenwich & England & and is used as a reference point for measuring longitude east and w






8. The chronological sequence of units of Earth time.






9. An individual grain or constituent of a rock.






10. Lies half way between the north and south magnetic poles.






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






12. A lake in an abandoned meander.






13. A plate boundary in which plates on opposite sides of the boundary move past each other in opposite directions. The San Andreas fault of California is a good example.






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






15. The line separating land and water.






16. 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.






17. The processes of weathering by which physical actions such as frost wedging break down a rock into fragments & involving no chemical change.






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






19. A conical volcano formed by the accumulation of pyroclastic debris around a vent.






20. A soft compact calcite & CaCO3 & with varying amounts of silica & quartz & feldspar & or other mineral impurities & generally gray-white or yellow-white and derived chiefly from fossil seashells.






21. Where two plates collide to form mountains.






22. The tectonic region in which two plates meet.






23. A small ice sheet.






24. Deposition of fine mineral particles (silt) on the beds of streams or lakes.






25. Heat transport by direct transfer of energy from one particle to another & without moving the particle to a new location.






26. A community of plants and/or animals and its physical environment & regarded as a unit.






27. The amount of dissolved salt in water.






28. A planetary satellite.






29. Deposits of wind-borne dust.






30. Forms along a coast as wave erosion cuts through a headland.






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






32. The galaxy where Earth is located.






33. The acidity in rain due to gases from internal combustion engines and coal- and oil-burning power plants.






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






35. The arrangement of rock units in the proper chronological order from youngest to oldest.






36. 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.






37. A sedimentary rock composed of combustible matter derived from the partial decomposition of plant material.






38. A floating ice sheet extending across water from a land-based glacier.






39. A zone in the Earth between 400 and 670 km below the surface separating the upper mantle from the lower mantle.






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






41. Applies to igneous rocks that cool on the surface of the Earth & including beneath water; typically with small crystals due to the rapidity of cooling. Synonym of extrusive. Antonym of plutonic.






42. As applied to glacier ice & the process by which ice below the snow line is wasted by evaporation and melting.






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






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






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






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






47. Distance over which wave-forming winds blow.






48. A roughly circular reef with an occasional small & low & coral sand island surrounding a shallow lagoon.






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






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