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 portable time keeper with a mechanism for ensuring accuracy and adjusting itself & used for determining longitude at sea.






2. A minor tremor that precedes an earthquake. An increase in seismicity may signal that a major release of strain energy is about to occur.






3. The mass of an object divided by its volume.






4. Synonym of intrusive. Antonym of volcanic. Applies to igneous rocks formed beneath the surface of the Earth; typically with large crystals due to the slowness of cooling.






5. A segment of an active fault zone that has not experienced a major earthquake during a time period when most other segments of the zone have. They are generally regarded as having a higher potential for future earthquakes.






6. The process of one plate descending beneath another.






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






8. Water beneath the Earth's surface.






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






10. Large area of extremely flat ocean floor lying near a continent and generally over 4 km in depth.






11. The chronological sequence of units of Earth time.






12. The weak or 'soft' zone in the upper mantle just below the lithosphere & involved in plate movement and isostatic adjustments. It lies 70 to 100 km below the surface and may extend to a depth of 400 km.






13. A natural open space underground & large enough for a person to enter. Most commonly occur by the dissolution of soluble rocks & generally limestone.






14. The sum of the processes that result in the wearing away or the progressive lowering of the Earth's surface by weathering & erosion & mass wasting & and transportation.






15. The top of a wave.






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






17. To preserve & or to avoid wasteful use.






18. An imaginary circle around the earth that represents the halfway mark between the North and South Poles and establishes the boundary between the Northern and Southern Hemispheres.






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






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






21. 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.






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






23. Uranus is named after the Roman god of the sky. It is the seventh planet from the Sun.






24. A commonly used scale of earthquake intensity.






25. The geologic eon lying between the Archean and Phanerozoic eons & beginning about 2.5 billion years ago and ending about 0.57 billion years ago.






26. A low & nearly flat accumulation of sediment deposited at the mouth of a river or stream & commonly triangular or fan-shaped.






27. A glaciated valley now flooded by the sea.






28. 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.






29. A stone or boulder & glacially transported from place of origin and left in an area of different bedrock composition.






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






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






32. 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.






33. A cavity in a lava & formed by the entrapment of a gas bubble during solidification of the lava.






34. An ingredient in a food or other substance that nourishes or promotes growth.






35. A delta formed at both sides of a tidal inlet.






36. The most recent eon of geologic time beginning 570 million years ago and continuing to the present.






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






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






39. Jupiter is named after the Roman king of the gods. It is the fifth planet from the Sun.






40. To wash or scrub away.






41. A volcano in the shape of a flattened cone & broad and low & built by very fluid flows of basaltic lava.






42. A low & nearly flat accumulation of sediment deposited at the mouth of a river or stream & commonly triangular or fan-shaped.






43. A broad & mound-like mass of glacier ice that usually spreads radially outward from a central zone.






44. Pertaining to or composed of granite & a coarse-grained igneous rock dominated by light-colored minerals & consisting of about 50 percent orthoclase & 25 percent quartz & and balance of feldspars and ferromagnesian silicates. Granite is commonly foun






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






46. A layer of sedimentary rock; plural is strata.






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






48. Geologic time expressed in years before the present.






49. 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






50. 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