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. The line that separates one drainage basin from another.






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






3. To preserve & or to avoid wasteful use.






4. 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.






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






6. Long narrow beaches separated in many places from the mainland by lagoons.






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






8. All of space and everything in it.






9. The accumulation of material in layers or beds.






10. A curved belt of volcanic islands lying above a subduction zone.






11. A chuck of rock or dust in space.






12. Either the northern or southern half of the Earth as divided by the equator & or the eastern or western half as divided by a meridian.






13. The Earth's crust underlying the ocean basins which is formed at mid-oceanic ridges. It is typically 5 to 10 kilometers thick composed of basalt.






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






15. 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.






16. A flood that rises and falls very rapidly.






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






18. The seaward edge of coast between low tide and effective wave action.






19. A large area of flat or nearly flat land.






20. Long narrow beaches separated in many places from the mainland by lagoons.






21. The outermost part of the core. It is liquid & about 1 &700 km thick & and separated from the inner & solid core by a transition zone about 565 km thick.






22. 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.






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






24. The rock beneath the soil.






25. Scratches & or small channels & gouged by glacier action. Occur on boulders & pebbles & and bedrock. Striations along bedrock indicate direction of ice movement.






26. The point on the Earth's surface where a magnetic needle points vertically downward (north magnetic pole) or vertically upward (south magnetic pole).






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






28. Distance over which wave-forming winds blow.






29. 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'.






30. A collection of maps.






31. 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.






32. 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.






33. The partial or complete blocking from view of one object by another.






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






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






36. 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.






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






38. The theory of Plate Tectonics states that the Earth's crust is fragmented into a dozen or more large and small pieces floating on a semi-molten mantle.






39. A mass of ice & formed by the recrystallization of snow & that flows forward & or has flowed at some time in the past.






40. 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






41. A river that is able to maintain its flow through a desert because of water received from outside the desert.






42. 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.






43. A large ridge or mound-like structure within a body of water that is built by calcareous organisms such as corals & red algae & and bivalves.






44. A geometrical form taken by a mineral & giving external expression to orderly internal atomic arrangement.






45. 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.






46. The areas of & in & or constituting a city.






47. The process of removing metal from ore.






48. A sedimentary rock made up of chemical sediments. Example: rock salt.






49. The Earth's crust underlying the ocean basins which is formed at mid-oceanic ridges. It is typically 5 to 10 kilometers thick composed of basalt.






50. A rigid segment of the Earth's lithosphere that moves horizontally and adjoins other plates along zones of seismic activity. Plates may include portions of both continents and ocean basins.