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. All of space and everything in it.






2. A blanket of wind-driven sand with an upper surface about a meter above ground level.






3. Woodland that usually gets at least 100 inches of rain each year.






4. The line formed by the intersection of the axial plane of a fold with a bedding plane & marking where the bed shows its maximum curvature.






5. The height of a place above sea level.






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






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






8. A commonly used scale of earthquake intensity.






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






10. A sedimentary rock composed primarily of biogenic sediments.






11. To preserve & or to avoid wasteful use.






12. The process of one plate descending beneath another.






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






14. A supercontinent that existed from the Jurassic to Early Tertiary after splitting from Pangea; composed of Laurentia & Baltica & Avalonia & (modern North America & Scandinavia & Greenland & Western and Central Europe); eventually fragmented into Eur






15. An individual grain or constituent of a rock.






16. A valley carved by glacier erosion and whose cross-valley profile has steep sides and a nearly flat floor & suggestive of a large letter 'you'.






17. 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.






18. A seismic body wave that involves particle motion & alternating compression and expansion & in the direction of wave propagation. It is the fastest seismic wave. compare S-wave .






19. A naturally occurring inorganic solid that has a well-defined chemical composition and in which atoms are arranged in an ordered fashion.






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






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






22. The very small particles of dirt & soot & and other pollutants that are present in the air.






23. A depression in the ground formed by the melting of a block of glacier ice buried or partially buried by drift.






24. The presence of layers in some rocks caused by parallel alignment of minerals.






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






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






27. Rock formed from the accumulation of sediment & Which may consist of fragments and mineral grains of varying sizes from pre-existing rocks & remains or products of animals and plants & the products of chemical action & or mixtures of these.






28. Highly mafic igneous volcanic rock & typically fine-grained and dark in color; rough volcanic equivalent of gabbro. Basalt is the most abundant volcanic rock in the Earth's crust.






29. Deserts in zones of descending air between 25 degrees and 30 degrees north and south latitude.






30. The method of locating an epicenter by determining how far it lies from three widely separated seismographs.






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






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






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






34. An accumulation of wind driven sand into a distinctive shape.






35. That part of the continental margin that lies between the continental shelf and the continental rise. Slope relatively steep & 3o - 6o. The continental slope is underlain by crustal rocks of the continent.






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






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






38. Woodland that usually gets at least 100 inches of rain each year.






39. Elongated rises on the ocean floor where basalt periodically erupts & forming new oceanic crust.






40. The surface between the zone of saturation and the zone of aeration.






41. The formation & advance and retreat of glaciers and the results of these activities.






42. Sediment formed by chemical precipitation from water. Example: halite precipitated as the result of the evaporation of sea water.






43. The condition of equilibrium & comparable to floating & of units of the lithosphere above the asthenosphere.






44. The amount of dissolved salt in water.






45. To wash or scrub away.






46. Saturn is named after the Roman god of the harvest. It is the sixth planet from the Sun.






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






48. To change back and forth uncertainly.






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






50. A large ridge or mound-like structure within a body of water that is built by calcareous organisms such as corals & red algae & and bivalves.