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






2. A region of high heat flow on the Earth's surface & thought to lie above a mantle plume .






3. The current geologic era & which began 66.4 million years ago and continues to the present.






4. A method of sediment transport in which the turbulence of a fluid is able to keep particles supported in the fluid.






5. A seismic body wave that involves particle motion & alternating compression and expansion & in the direction of wave propagation. It is the fastest seismic wave. compare S-wave .






6. The level of light that penetrates through water.






7. A soft compact calcite & CaCO3 & with varying amounts of silica & quartz & feldspar & or other mineral impurities & generally gray-white or yellow-white and derived chiefly from fossil seashells.






8. The persistence of wind-formed waves after wind ceases.






9. The green pigment in the cells of many plants that enables them to use sunlight to convert carbon dioxide and water into carbohydrates in the process called photosynthesis.






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






11. 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.






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






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






14. A naturally occurring inorganic solid that has a well-defined chemical composition and in which atoms are arranged in an ordered fashion.






15. Gases that can be dissociated by solar radiation & which releases chlorine & which in turn destroys ozone.

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16. A curved belt of volcanic islands lying above a subduction zone.






17. The persistence of wind-formed waves after wind ceases.






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






19. An era of time during the Phanerozoic eon lasting from 245 million years ago to 66.4 million ago.






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






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






22. The arrangement of rock units in the proper chronological order from youngest to oldest.






23. 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.






24. A supercontinent that existed from the the end of the Permian to the Jurassic & 300 to 200 million years ago & assembled from large continents like Euramerica & Gondwana & and Siberia & as well as smaller landmasses like the Cathaysian and Cimmerian






25. A chuck of rock or dust in space.






26. A substance that produces positively charged hydrogen ions (H+) when dissolved in water.






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






28. A disease-causing organism or entity & such as a bacterium or virus.






29. A coral reef separated from the mainland by a lagoon.






30. A broad & mound-like mass of glacier ice that usually spreads radially outward from a central zone.






31. Geologic time expressed in years before the present.






32. Synonym of intrusive. Antonym of volcanic. Applies to igneous rocks formed beneath the surface of the Earth; typically with large crystals due to the slowness of cooling.






33. Similar to a groin but built to keep sand out of a harbor entrance.






34. Lacking in rainfall & very dry.






35. A minor tremor that precedes an earthquake. An increase in seismicity may signal that a major release of strain energy is about to occur.






36. In the geologic time scale a unit of time less than an era and greater than an epoch. Example: The Tertiary period was the earliest period in the Cenozoic era and included & among others & the Eocene epoch.






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






38. Scratches & or small channels & gouged by glacier action. Occur on boulders & pebbles & and bedrock. Striations along bedrock indicate direction of ice movement.






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






40. Heat transport by direct transfer of energy from one particle to another & without moving the particle to a new location.






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






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






43. The transformation of a soil from a solid to a liquid state as the result of increased pore pressure.






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






45. A sea wave produced by any large-scale & short duration disturbance on the seafloor & commonly a shallow submarine earthquake but possibly also a submarine slide or volcanic eruption.






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






47. Swamp that forms in the low lying flood plain behind a levee.






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






49. One of several rock-forming minerals that contain at least 95% silica (quartz). and usually one or more other common elements.






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