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. An aggregate of one or more minerals in varying proportions.






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






3. An earthquake that follows and has its epicenter near a larger earthquake.






4. 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.






5. Sediment formed by chemical precipitation from water. Example: halite precipitated as the result of the evaporation of sea water.






6. Glacial deposits laid down directly by glaciers or laid down in lakes & ocean & or streams as result of glacial activity.






7. The physical & chemical & and biological processes by which rock at or near the Earth's surface is broken down into smaller pieces.






8. The line that separates one drainage basin from another.






9. Water that flows across watersheds during and immediately after severe rainstorms. In populated areas & stormwater runoff is often water that cannot be handled by existing sewer systems. Stormwater runoff is the leading source of water pollution in t






10. The chronological sequence of units of Earth time.






11. 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.






12. The science that deals with the study of the planet Earth--the materials of which it is made & the processes that act to change these materials from one form to another & and the history recorded by these materials; the forces acting to deform the ou






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






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






15. Living in water.






16. A planetary satellite.






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






18. Gases (primarily water and carbon dioxide & but also a variety of sulfur and nitrogen compounds and gaseous hydrocarbons) that trap the Sun's heat in the atmosphere.






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






20. A narrow strip of land that has water on either side and connects two larger bodies of water.






21. The tectonic region in which two plates meet.






22. Soil conditions prevailing in area whose mean annual temperature is 0o C.






23. A waste material that contaminates air & water & or soil.






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






25. An astronomical instrument for measuring angles & primarily altitude of celestial bodies to determine latitude.






26. A portable time keeper with a mechanism for ensuring accuracy and adjusting itself & used for determining longitude at sea.






27. The point on the Earth's surface that is directly above the focus of an earthquake.






28. A ridge of high water associated with a hurricane and which floods over the shore .






29. An icicle-shaped accumulation of dripstone hanging from cave roof.






30. A general term including both oil and natural gas.






31. The very small particles of dirt & soot & and other pollutants that are present in the air.






32. A portable time keeper with a mechanism for ensuring accuracy and adjusting itself & used for determining longitude at sea.






33. The level of light that penetrates through water.






34. A roughly circular reef with an occasional small & low & coral sand island surrounding a shallow lagoon.






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






36. The generally dark & more or less stable part of the organic matter in a soil & so well decomposed that the original sources cannot be identified.






37. The theory that states that the present-day continents are the fragmented pieces of preexisting larger landmasses called supercontinents.






38. 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.






39. A natural depression in the surface of the land caused by the collapse of the roof of a cavern or subterranean passage & generally occurring in limestone regions.






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






41. The environment where a particular plant or animal is normally found.






42. 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.






43. Bent rock strata.






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






45. 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.






46. The tectonic region in which two plates meet.






47. Turbulent stream water flow down a steep gradient & but not as steep as in a waterfall.






48. A group of islands; an expanse of water with scattered islands.






49. Any object that revolves around another object in space.






50. A volcanic mountain on the seafloor. If flat-topped & it is a guyot.