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






2. Any place where bedrock is visible on the surface of the Earth.






3. That part of the continental margin that lies between the continental shelf and the continental rise. Slope relatively steep & 3o - 6o. The continental slope is underlain by crustal rocks of the continent.






4. A depression in the ground formed by the melting of a block of glacier ice buried or partially buried by drift.






5. 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.






6. A stone or boulder & glacially transported from place of origin and left in an area of different bedrock composition.






7. An atmospheric shield providing the Earth with protection from ultra-violet rays which can cause sun burn & skin cancer and the destruction of the delicate plant life which supports the planet's food chain.






8. 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.






9. A time of unusual winds and currents in the Pacific Ocean . El Nino generally causes warmer-than-normal sea surface temperatures and increased rainfall and storm activity.






10. 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.






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






12. 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.






13. A worldwide change in sea level & such as caused by melting glaciers.






14. A person who makes maps.






15. The process by which an unconsolidated deposit of sediments is converted in to solid rock.






16. 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.






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






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






19. The low spot between two successive waves.






20. A measure of acidity.






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






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






23. The level of light that penetrates through water.






24. The internal resistance to flow in a liquid.






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






26. The concept of a sequence of events involving the formation & alteration & destruction and reformation of rocks as a result of geologic processes.






27. A type of disintegration in which jointed rock is forced apart by the expansion of water as it freezes in fractures.






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






29. A layer of sedimentary rock; plural is strata.






30. A floating ice sheet extending across water from a land-based glacier.






31. The principle that states the processes operating to change the Earth in the present also operated in the past.






32. A broad & deep & generally straight furrow carved in bed rock by the abrasive action of debris embedded in a moving glacier. Larger and deeper than a glacial striation.






33. The galaxy where Earth is located.






34. A planetary satellite.






35. An instrument that merely indicates the occurrence of an earthquake.






36. A protective wall built offshore and usually parallel to the shore.






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






38. The perpendicular or very steep descent of a stream.






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






40. (Greek-Aphrodite)named after the Roman goddess of love. It is the planet closest in size to Earth and the second planted from the Sun.






41. A small & dust-bearing whirlwind.






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






43. 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.






44. Ratio between weight of given volume of material and weight of equal volume of pure water.






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






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






47. Pertaining to or composed of granite & a coarse-grained igneous rock dominated by light-colored minerals & consisting of about 50 percent orthoclase & 25 percent quartz & and balance of feldspars and ferromagnesian silicates. Granite is commonly foun






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






49. An area subject to dust storms & especially south central United States .






50. Living in water.