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Earth Science

Subject : science
Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. 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.






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






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






4. A lake of lava & usually basaltic & in a volcanic caldera.






5. The rise and fall of sea level caused by the gravitational pull of the Sun and Moon on the Earth.






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






7. A wall built out from the shore & usually at perpendicular to it to trap sand carried by longshore currents .






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






9. (Latin- Terra & Greek- Gaia) Earth is named after the ancient Germanic Goddess of the soil. It is the third planet from the Sun.






10. A Hawaiian term for a basaltic lava flow with a smooth & or ropy surface.






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






12. Open pit mining & typically for coal.






13. The process of one plate descending beneath another.






14. Distance over which wave-forming winds blow.






15. The average weather conditions of an area over many years & as measured by temperature & wind speed & and precipitation.






16. Any accumulation of material & by settling from water or air & chemical precipitation & evaporation from solution & etc.






17. In the geologic time scale a unit of time less than an era and greater than an epoch. Example: The Tertiary period was the earliest period in the Cenozoic era and included & among others & the Eocene epoch.






18. 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.






19. The outermost layer of the Earth & varying in thickness from about 10 kilometers (6 miles) below the oceans & to 65 kilometers (about 40 miles) below the continents; represents less than 1 percent of the Earth's volume.






20. A rock changed from its original form and/or composition by heat & pressure &shearing stress & or chemically active fluids & or some combination of them.






21. Mercury is named after the Roman messenger of the gods. It is the closest to the Sun.






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






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






24. 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.






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






26. A time of unusual winds and currents in the Pacific Ocean . El Nino generally causes warmer-than-normal sea surface temperatures and increased rainfall and storm activity.






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






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






29. A disease-causing organism or entity & such as a bacterium or virus.






30. An individual grain or constituent of a rock.






31. A substance that produces negatively charged hydroxide ions ( OH- ) in water and reacts with acids to form salts.






32. 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.






33. The way in which a rock or mineral breaks in random patterns rather than cleaving






34. A commonly used measure of earthquake magnitude & based on a logarithmic scale. Each integral step on the scale represents a tenfold increase in the extent of ground shaking & as recorded on a seismograph.






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






36. Where two plates collide to form mountains.






37. 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






38. No identifiable layers of minerals in a rock sample






39. A Hawaiian term for a lava flow that has a rough & jagged surface.






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






41. Lava extruded beneath water characterized by pillow shapes.






42. A region of high heat flow on the Earth's surface & thought to lie above a mantle plume .






43. All of space and everything in it.






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






45. Deposits of wind-borne dust.






46. Flat land covered with tall grass and wildflowers.






47. A protective wall built offshore and usually parallel to the shore.






48. The portion of the continental margin that lies between the abyssal plain and the continental slope. The continental rise is underlain by crustal rocks of the ocean basin.






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






50. A geometrical form taken by a mineral & giving external expression to orderly internal atomic arrangement.






Can you answer 50 questions in 15 minutes?



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