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. Heat transport by moving particles & and the thermal energy that they carry & to a new location.






2. 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.






3. (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.






4. The portion of the continental margin that lies between the abyssal plain and the continental slope. The continental rise is underlain by crustal rocks of the ocean basin.






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






6. 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.






7. The area immediately below the ground surface within which pore spaces are partially filled with water and partially filled with air.






8. A process by which salts accumulate in soil.






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






10. The innermost zone of Earth. It consists of two parts & an outer liquid section and an inner solid section & both chiefly of iron and nickel with about 10 percent lighter elements. It is surrounded by the mantle.






11. A hydrocarbon (coal or petroleum) that can be extracted from the Earth for use as a fuel. Fossil fuels are non-renewable energy sources.






12. A post of dripstone growing up from a cave floor.






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






14. A natural open space underground & large enough for a person to enter. Most commonly occur by the dissolution of soluble rocks & generally limestone.






15. 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.






16. Enormous & thick sheets of rock that are part of the Earth's upper mantle that move and adjoin each other along zones of seismic activity. Many tectonic plates extend underneath both continents and sea floor.






17. 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 &






18. A post of dripstone growing up from a cave floor.






19. The naturally occurring material from which a mineral or minerals of economic value can be extracted at a profit.






20. The process of removing metal from ore.






21. Formed when an organism is flattened (compressed) and a thin film of organic material from its body is left in the rock.






22. A device built to study distant objects by making them appear closer.






23. 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






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






25. A coral reef attached directly to the mainland.






26. A steep-sided rounded extrusion of highly viscous lava squeezed out from a volcano and forming a dome-shaped or bulbous mass above and around the volcanic vent. The structure generally develops inside a volcanic crater.






27. The initial point within the Earth that ruptures in an earthquake & directly below the epicenter. The point within the Earth which is the center of an earthquake & at which strain energy is first released and converted to elastic wave energy.






28. A term applied to large areas of basaltic lava presumably extruded from fissures.






29. The mass of an object divided by its volume.






30. Distance over which wave-forming winds blow.






31. The process of one plate descending beneath another.






32. A collection of maps.






33. The weak or 'soft' zone in the upper mantle just below the lithosphere & involved in plate movement and isostatic adjustments. It lies 70 to 100 km below the surface and may extend to a depth of 400 km.






34. The oldest eon in Earth history & extending from the origin of the Earth to about 3.9 billion years ago.






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






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






37. 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.






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






39. Saturn is named after the Roman god of the harvest. It is the sixth planet from the Sun.






40. Any molten material that is extrusive or volcanic & or the rock that forms from a molten extrusive. Molten rock that flows at the Earth's surface.






41. 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.






42. A person who makes maps.






43. Weathering processes that are the result of chemical reactions. Example: the transformation of orthoclase to kaolinite.






44. Till deposited from main body of glacier during ablation.






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






46. Distance over which wave-forming winds blow.






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






48. The elevation at which snow persists throughout the year.






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






50. A zone in the Earth between 400 and 670 km below the surface separating the upper mantle from the lower mantle.