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






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






3. A general term including both oil and natural gas.






4. An artificial hill formed by the debris of successive human settlements.






5. The process of mountain building.






6. The distance between two successive wave crests or troughs.






7. The two days of the year on which neither hemisphere is tilted toward or away from the sun.






8. A volcanic mountain on the seafloor. If flat-topped & it is a guyot.






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






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






11. 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.






12. A worldwide change in sea level & such as caused by melting glaciers.






13. The environment where a particular plant or animal is normally found.






14. The color of a mineral in its powdered form obtained from scraping a sample on a ceramic plate






15. A fracture or zone of fractures along the boundaries of tectonic plates where movement has taken place.






16. The environment where a particular plant or animal is normally found.






17. All of space and everything in it.






18. An era of time during the Phanerozoic eon lasting from 245 million years ago to 66.4 million ago.






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






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






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






22. A major drainage divide separating the drainage to one ocean from another.






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






24. Any molten material that is extrusive or volcanic & or the rock that forms from a molten extrusive. Molten rock that flows at the Earth's surface.






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






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






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






28. A large & basin-shaped volcanic depression & more or less circular in form. Typically steep-sided & found at the summit of a shield volcano.






29. Gases that can be dissociated by solar radiation & which releases chlorine & which in turn destroys ozone.

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






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






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






33. Enormous & thick sheets of rock that are part of the Earth's upper mantle that move and adjoin each other along zones of seismic activity. Many tectonic plates extend underneath both continents and sea floor.






34. Living parts of the environment that can renew or replace themselves.






35. The reflection of light on a given mineral's surface & classified by intensity and quality.






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






37. The closest star to Earth besides the sun. It is approximately 4 light years away.






38. Mars is named after the Roman god of war. It is the fourth planet from the Sun.






39. Any seismic wave that travels through the body of Earth & rather than along its surface.






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






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






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






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






44. An area subject to dust storms & especially south central United States .






45. A division of geologic time next smaller than the eon and larger than a period. Example: The Paleozoic era is in the Phanerozoic eon and includes & among others & the Devonian period.






46. 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.






47. 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.






48. A seismic body wave that involves particle motion from side to side & perpendicular to the direction of wave propagation. S-waves are slower than P-waves and cannot travel through a liquid.






49. Lacking in rainfall & very dry.






50. The vertical distance between the crest and adjacent trough of a wave.