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






2. A plate boundary in which plates on opposite sides of the boundary move past each other in opposite directions. The San Andreas fault of California is a good example.






3. 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.






4. The vertical distance between the crest and adjacent trough of a wave.






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






6. A commonly used measure of earthquake magnitude & based on a logarithmic scale. Each integral step on the scale represents a tenfold increase in the extent of ground shaking & as recorded on a seismograph.






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






8. Living parts of the environment that can renew or replace themselves.






9. A commonly used measure of earthquake magnitude & based on a logarithmic scale. Each integral step on the scale represents a tenfold increase in the extent of ground shaking & as recorded on a seismograph.






10. That portion of the Earth below the crust and reaching to about 2 &780 km & where a transition zone of about 100 km thickness separates it from the core.






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






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






13. 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'.






14. Of or relating to or containing basalt & a dark & dense & extrusive rock that has a silica content of 40% to 50% and makes up most of the ocean floor.






15. The average weather conditions of an area over many years & as measured by temperature & wind speed & and precipitation.






16. An abandoned meander .






17. Reduction of pore space between individual particles as the result of overlying sediments or of tectonic movements.






18. A substance that produces negatively charged hydroxide ions ( OH- ) in water and reacts with acids to form salts.






19. An area in which a large number of windmills have been erected to generate electrical power.






20. An instrument used to measure the speed of wind.






21. A vent on the seafloor from which hydrothermal fluids are emitted. Upon mixing with seawater and cooling & the fluids precipitate a cloud of fine-grained sulfide minerals that resembles a cloud of black smoke.






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






23. As applied to glacier ice & the process by which ice below the snow line is wasted by evaporation and melting.






24. Water beneath the Earth's surface.






25. The very slow & generally continuous downslope movement of soil and debris under the influence of gravity.






26. Deserts formed by blocking moisture-bearing winds with mountain barriers.






27. Containing moisture.






28. A thickened elevated region of Earth's crust that is mainly (but not entirely) above sea level.






29. 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.






30. The way in which a rock or mineral breaks in random patterns rather than cleaving






31. 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.






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






33. Distance over which wave-forming winds blow.






34. The precipitation that runs directly off the surface to stream or body of standing water.






35. A coral reef attached directly to the mainland.






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






37. A waterway from open ocean into a lagoon.






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






39. The average weather conditions of an area over many years & as measured by temperature & wind speed & and precipitation.






40. The condition of equilibrium & comparable to floating & of units of the lithosphere above the asthenosphere.






41. 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.






42. The Sun with all the celestial bodies that revolve around it.






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






44. The sum of the processes that result in the wearing away or the progressive lowering of the Earth's surface by weathering & erosion & mass wasting & and transportation.






45. Imaginary lines on a map or globe that measure distance in degrees east or west of the prime meridian. Longitude lines extend vertically & from pole to pole on a globe.






46. 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.






47. A mudflow composed chiefly of pyroclastic material on the flanks of a volcano.






48. In a stream & the volume of water passing through a channel in a given time.






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






50. An eon of geologic time extending from about 3.9 billion years to 2.5 billion years ago.