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






2. The height of a place above sea level.






3. 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.






4. Objects revolving around the sun that are too small and too numerous to be considered planets.






5. A general term for a relatively hard layer of soil at or just below the ground surface & cemented by silica & iron oxide & calcium carbonate & or organic matter.






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






7. A division of geologic time next smaller than the eon and larger than a period. Example: The Paleozoic era is in the Phanerozoic eon and includes & among others & the Devonian period.






8. The zone below the zone of aeration in which all pore spaces are filled with water.






9. A flood that rises and falls very rapidly.






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






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






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






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






14. The processes (mechanical and chemical) responsible for the wearing away & loosening & and dissolving of materials of the Earth's crust.






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






16. A general term including both oil and natural gas.






17. All of space and everything in it.






18. Living in water.






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






20. The region of a shore that is covered at high tide and exposed at low tide.






21. Forms along a coast as wave erosion cuts through a headland.






22. A commonly used scale of earthquake intensity.






23. 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.






24. A blanket of wind-driven sand with an upper surface about a meter above ground level.






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






26. A flood that rises and falls very rapidly.






27. The processes (mechanical and chemical) responsible for the wearing away & loosening & and dissolving of materials of the Earth's crust.






28. The closest star to Earth besides the sun. It is approximately 4 light years away.






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






30. The rock beneath the soil.






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






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






33. The distance between two successive wave crests or troughs.






34. The uprush of a wave onto the beach followed by the return flow of the water down the beach slope in the intervals between waves.






35. Highly mafic igneous volcanic rock & typically fine-grained and dark in color; rough volcanic equivalent of gabbro. Basalt is the most abundant volcanic rock in the Earth's crust.






36. 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'.






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






38. Iron & aluminum & magnesium & manganese & and titanium. Ores of the abundant metals only need to be 3 - 5 times as metal-rich as average rock.






39. A large amount of gas and dust in space & spread out in an immense volume.






40. A steep or vertical cliff & either above or below sea level.






41. 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.






42. Water beneath the Earth's surface.






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






44. 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.






45. An eon of geologic time extending from about 3.9 billion years to 2.5 billion years ago.






46. The process of one plate descending beneath another.






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






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






49. A plate boundary in which plates on opposite sides of the boundary move past each other in opposite directions. The San Andreas fault of California is a good example.






50. Deserts formed by blocking moisture-bearing winds with mountain barriers.