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






2. A collection of maps.






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






4. The closest galaxy to the Milky way. It is approximately 2 million light-years away.






5. A commonly used scale of earthquake intensity.






6. 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.






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






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






9. The sudden fall of one or more large pieces of a rock from a cliff.






10. A unit of length used in sea navigation based on the length of 1 minute of arc on a great circle. On Earth & 1 minute of latitude.






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






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






13. A ball of ice and dust & whose orbit is a long & narrow ellipse.






14. A flood that rises and falls very rapidly.






15. A valley caused by extension of the Earth's crust. Its floor forms as a portion of the crust moves downward along normal faults.






16. A planetary satellite.






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






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






19. 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






20. A vent in the surface of the Earth & from which lava & ash & and gases erupt.






21. Any solid material that has settled out of a state of suspension in liquid.






22. The tendency of a moving object to continue in a straight line or a stationary object to remain in place.






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






24. A conical volcano formed by the accumulation of pyroclastic debris around a vent.






25. A roughly circular reef with an occasional small & low & coral sand island surrounding a shallow lagoon.






26. 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.






27. 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






28. A device built to study distant objects by making them appear closer.






29. A system that uses a constellation of 24 satellites & their ground stations & and individual GPS receivers to accurately locate points on Earth.






30. The tendency of a moving object to continue in a straight line or a stationary object to remain in place.






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






32. That portion of the Earth below the crust and reaching to about 2 &780 km & where a transition zone of about 100 km thickness separates it from the core.






33. The top of a wave.






34. An instrument that detects & magnifies & and records vibrations of the Earth & especially earthquakes.






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






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






37. Lacking in rainfall & very dry.






38. A measure of the strength of an earthquake based on the amount of movement recorded by a seismograph . compare Richter scale.






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






40. An isolated & steep-sided & rocky mass or island just offshore from a rocky headland & usually on a shore platform.






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






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






43. Where two plates are moving in opposite directions as in a mid-ocean ridge.






44. A detailed mathematical description of the cause-and-effect relationships between events that can be used to predict or explain other such events.






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






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






47. A floating ice sheet extending across water from a land-based glacier.






48. 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.






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






50. 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.