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






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






3. The process by which a binding & or cementing & agent is precipitated in spaces among individual particles of a deposit. Common cementing agents are calcite & quartz & and dolomite.






4. The rigid outer shell of the Earth. It includes the crust and uppermost mantle and is on the order of 100 km in thickness.






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






6. An instrument that merely indicates the occurrence of an earthquake.






7. Turbulent stream water flow down a steep gradient & but not as steep as in a waterfall.






8. The low spot between two successive waves.






9. Soil conditions prevailing in area whose mean annual temperature is 0o C.






10. 1. A steep-walled & usually conical depression at the summit or on the flanks of a volcano & resulting from the explosive ejection of material from a vent. 2. A bowl-shaped depression with a raised & overturned rim produced by the impact of a meteori






11. The accumulation of material in layers or beds.






12. 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'.






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






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






15. A coral reef attached directly to the mainland.






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






17. The chronological sequence of units of Earth time.






18. Scratches & or small channels & gouged by glacier action. Occur on boulders & pebbles & and bedrock. Striations along bedrock indicate direction of ice movement.






19. The reserves of a valuable mineral commodity plus all other mineral deposits that may eventually become available & even those that are presumed to exist but have not yet been discovered and those that are not economically or technologically exploita






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






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






22. Pertaining to clastic material formed by volcanic explosion or aerial expulsion from a volcanic vent.






23. A flat & dry plain covered with short grass.






24. The explosion of a dying giant or supergiant star.






25. Verifying assessments made from satellite data by doing direct & 'on-the ground' measurements.






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






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






28. A mound or ridge of sediment deposited by a glacier.






29. The tectonic region in which two plates meet.






30. A waterway from open ocean into a lagoon.






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






32. The effect of water and carbon dioxide absorbing outgoing infrared radiation & raising a system's temperature. The term is generally used with reference to the Earth's temperature & although it can also be applied to other systems & such as greenhous






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






34. Where one plate slides beneath another plate as the two are pushed together & a subduction zone.






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






36. Heat extracted from the Earth for use as an power source.






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






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






39. Gases (primarily water and carbon dioxide & but also a variety of sulfur and nitrogen compounds and gaseous hydrocarbons) that trap the Sun's heat in the atmosphere.






40. An aggregate of one or more minerals in varying proportions.






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






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






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






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






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






46. A ridge of high water associated with a hurricane and which floods over the shore .






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






48. The top of a wave.






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






50. The accumulation of material in layers or beds.