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 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.






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






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






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






5. The amount of dissolved salt in water.






6. The layer of gases (air) & that surrounds a planet or moon.






7. The level of light that penetrates through water.






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






9. A downward distortion or dimple in the water table that forms as a well pumps water faster than it can flow through the aquifer.






10. 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.






11. The process by which ocean floors spread laterally from crests of main ocean ridges. As material moves laterally from the ridge & new material replaces it along the ridge crest by welling upward from the mantle.






12. 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.






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






14. Geologic time expressed in years before the present.






15. The internal resistance to flow in a liquid.






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






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






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






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






20. 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.






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






22. The level of light that penetrates through water.






23. A sea level change due to change in load on Earth's crust.






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






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






26. The pattern of water circulation from the ocean to the atmosphere to the land and back to the ocean.






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






28. A fracture or zone of fractures along the boundaries of tectonic plates where movement has taken place.






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






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






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






32. The primary division of geologic time which are & from oldest to youngest & the Hadean & Archean & Proterozoic & and Phanerozoic eons.






33. A flood that rises and falls very rapidly.






34. Jupiter is named after the Roman king of the gods. It is the fifth planet from the Sun.






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






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






37. A flood that rises and falls very rapidly.






38. Pertaining to clastic material formed by volcanic explosion or aerial expulsion from a volcanic vent.






39. A type of thermal spring which ejects water intermittently with considerable force.






40. To preserve & or to avoid wasteful use.






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






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






43. A measure of the strength of an earthquake based on the amount of movement recorded by a seismograph . compare Richter scale.






44. Materials that are found in nature that are useful or necessary for people to live.






45. The presence of layers in some rocks caused by parallel alignment of minerals.






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






47. A statement of relative age in layered rocks: In a series of sedimentary rocks that has not been overturned & the topmost layer is always the youngest and the bottommost layer is always the oldest.






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






49. A narrow & steep-walled depression in the ocean floor & much deeper than the adjacent ocean and associated with a subduction zone.






50. The point on the Earth's surface where a magnetic needle points vertically downward (north magnetic pole) or vertically upward (south magnetic pole).