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 small & dust-bearing whirlwind.






2. Open pit mining & typically for coal.






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






4. The great circle on the Earth's surface passing through The North and South Poles & which is considered 0 degrees longitude. The prime meridian passes through Greenwich & England & and is used as a reference point for measuring longitude east and w






5. A mudflow composed chiefly of pyroclastic material on the flanks of a volcano.






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






7. An eruption of lava that takes place from a fracture & usually without producing a cone.






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






9. The tectonic region in which two plates meet.






10. The initial point within the Earth that ruptures in an earthquake & directly below the epicenter. The point within the Earth which is the center of an earthquake & at which strain energy is first released and converted to elastic wave energy.






11. Bent rock strata.






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






13. A continuous well-defined mass of material of sufficient ore content to make extraction economically feasible. compare mineral deposit.






14. A molecule composed of three atoms of oxygen and mostly found in the stratosphere. Though beneficial in the upper atmosphere & at ground level & ozone is called photochemical smog & and is a respiratory irritant and considered a pollutant.






15. The process by which building stone & usually in blocks or sheets & is extracted from the Earth. radiation -- (Electromagnetic radiation) -- energy that travels through space in the form of waves without the intervention of matter & as in the transp






16. A large volume of dust-sized particles lifted high into the atmosphere.






17. The primary division of geologic time which are & from oldest to youngest & the Hadean & Archean & Proterozoic & and Phanerozoic eons.






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






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






20. 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.






21. An area where fresh water comes into contact with seawater & usually in a partly enclosed coastal body of water; a mix of fresh and salt water where the current of a stream meets the tides.






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






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






24. The primary division of geologic time which are & from oldest to youngest & the Hadean & Archean & Proterozoic & and Phanerozoic eons.






25. 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.






26. Pluto is named after the Roman god of the Underworld. No longer considered a planet.






27. The upper horizons in a soil & through which gravitational moisture travels & removing soluble decomposition products.






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






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






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






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






32. The innermost zone of Earth. It consists of two parts & an outer liquid section and an inner solid section & both chiefly of iron and nickel with about 10 percent lighter elements. It is surrounded by the mantle.






33. Any of various minerals prized for beauty & durability & and rarity. A few noncrystalline materials of organic origin (e.g. & pearl & red coral & and amber) also are classified as gemstones.






34. A division of geologic time next shorter than a period. Example: the Pleistocene epoch is in the Quaternary period.






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






36. The zones of seismic activity long which plates are in contact.






37. Deep steep-sided depression in the ocean floor caused by the subduction of oceanic crust beneath either other oceanic crust or continental crust.






38. Woodland that usually gets at least 100 inches of rain each year.






39. A dense & hot (sometimes incandescent) cloud of volcanic ash and gas produced in a Pelean eruption.






40. 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.






41. Lacking in rainfall & very dry.






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






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






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






45. A sea wave produced by any large-scale & short duration disturbance on the seafloor & commonly a shallow submarine earthquake but possibly also a submarine slide or volcanic eruption.






46. 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






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






48. 1. A mass of sand & gravel & or alluvium deposited on the bed of a stream & sea & or lake & or at the mouth of a stream 2. A unit of pressure & approximately equal to atmospheric pressure at sea level.






49. Elongated rises on the ocean floor where basalt periodically erupts & forming new oceanic crust.






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