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






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






3. The resistance of a mineral to scratching & as measured by the Mohs scale.






4. A spring whose temperature is 6.5o C or more above mean annual air temperature.






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






6. 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.






7. 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.






8. The remains of an extremely massive star pulled into a small volume by the force of gravity.






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






10. The layer of gases (air) & that surrounds a planet or moon.






11. A process of erosion in which wind carries off particles of dust and sand.






12. 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.






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






14. Heat transport by direct transfer of energy from one particle to another & without moving the particle to a new location.






15. Similar to a groin but built to keep sand out of a harbor entrance.






16. A type of thermal spring which ejects water intermittently with considerable force.






17. Where two plates collide to form mountains.






18. 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






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






20. The southern portion of the late Paleozoic supercontinent known as Pangea. It means & literally 'Land of the Gonds' (a people of the Indian subcontinent).The supercontinent existed from Cambrian to Jurassic time & mainly composed of South America &






21. A soft compact calcite & CaCO3 & with varying amounts of silica & quartz & feldspar & or other mineral impurities & generally gray-white or yellow-white and derived chiefly from fossil seashells.






22. Of or relating to or containing basalt & a dark & dense & extrusive rock that has a silica content of 40% to 50% and makes up most of the ocean floor.






23. Gases that can be dissociated by solar radiation & which releases chlorine & which in turn destroys ozone.

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24. Containing moisture.






25. A building that contains one or more telescopes.






26. 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.






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






28. An instrument used to measure the speed of wind.






29. A landscape that develops from the action of ground water in areas of easily soluble rocks. It is usually characterized by caves & underground drainage and sinkholes.






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






31. The reserves of a valuable mineral commodity plus all other mineral deposits that may eventually become available & even those that are presumed to exist but have not yet been discovered and those that are not economically or technologically exploita






32. The amount of material a stream carries in suspension.






33. Heat extracted from the Earth for use as an power source.






34. The accumulation of material in layers or beds.






35. Temporary accumulations of sediments that collect between low and high water marks.






36. The process by which ocean floors spread laterally from crests of main ocean ridges. As material moves laterally from the ridge & new material replaces it along the ridge crest by welling upward from the mantle.






37. A period of dryness & that when prolonged & causes damage to crops; a shortage of water.






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






39. The breaking away of ice from the front of the glacier when it ends in a lake or an ocean. Produces icebergs.






40. Destruction of the ozone layer caused by the release of CFC's (chlorofluorocarbons) into the atmosphere which react chemically with ozone and break it down into different gases.






41. Materials that are found in nature that are useful or necessary for people to live.






42. A hot & gaseous & self-luminous celestial body & as the Sun.






43. The relationship between distances in the area being mapped and distances in the map itself.






44. Plutonic. Antonym of extrusive. Pertaining to igneous rocks or features formed by the emplacement of magma in pre-existing rocks.






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






46. Evidence in rock of the presence of past life & such as a dinosaur bone & an ancient clam shell & or the footprint of a long-extinct animal as well as life history artifacts.






47. The line separating land and water.






48. The line formed by the intersection of the axial plane of a fold with a bedding plane & marking where the bed shows its maximum curvature.






49. He area from which a stream and its tributaries receives its water.






50. The persistence of wind-formed waves after wind ceases.






Can you answer 50 questions in 15 minutes?



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