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 portion of the continental margin that extends as a gently sloping surface from the shoreline seaward to a marked change in slope at the top of the continental slope . Seaward depth averages about 130 m.






2. Deposits of wind-borne dust.






3. A giant structure that contains hundreds of billions of stars.






4. 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






5. 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.






6. Lacking in rainfall & very dry.






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






8. The chronological sequence of units of Earth time.






9. Any porous and permeable rock that yields oil or natural gas.






10. A cavity in a lava & formed by the entrapment of a gas bubble during solidification of the lava.






11. A mound or ridge of sediment deposited by a glacier.






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






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






14. A chuck of rock or dust in space.






15. The outermost layer of the Earth & varying in thickness from about 10 kilometers (6 miles) below the oceans & to 65 kilometers (about 40 miles) below the continents; represents less than 1 percent of the Earth's volume.






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






17. A narrow strip of land along the margin of the ocean extending inland for a variable distance from low water mark.






18. The point on the Earth's surface directly above the focus of an earthquake.






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






20. The process of removing metal from ore.






21. A flood that rises and falls very rapidly.






22. The geologic eon lying between the Archean and Phanerozoic eons & beginning about 2.5 billion years ago and ending about 0.57 billion years ago.






23. The direction & north (normal) or south (reversed) & that a magnetic compass needle points.






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






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






26. Mountains & characterized by extensive folding and thrust faulting & that form at convergent plate boundaries on continents.






27. A rock that has crystallized from a molten state.






28. A vertical conduit through the Earth's crust below a volcano & through Which magma has passed.






29. A cyclical pattern of movement in a fluid body such as the ocean & the atmosphere & or the Earth's mantle & driven by density variations which in turn are the result of differences in temperature from one part of the fluid to another.






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






31. Containing moisture.






32. The level of light that penetrates through water.






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






34. The reflection of light on a given mineral's surface & classified by intensity and quality.






35. Living on land.






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






37. A device containing a free-swinging magnetic needle that is attracted to Earth's magnetic North Pole. Used to determine direction of travel.






38. To change back and forth uncertainly.






39. A small ice sheet.






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






41. A community of plants and/or animals and its physical environment & regarded as a unit.






42. Property possessed by certain rocks of breaking with relative ease along parallel planes or nearly parallel surfaces in their crystal structures where the bonds are weakest.






43. The study of earthquakes & and of the structure of the Earth by both natural and artificially generated seismic waves.






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






45. 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






46. The peak flow of water that tops the banks of a stream channel.






47. A tool for measuring the relative clarity of water.






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






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






50. 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.