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. Pertaining to or composed of granite & a coarse-grained igneous rock dominated by light-colored minerals & consisting of about 50 percent orthoclase & 25 percent quartz & and balance of feldspars and ferromagnesian silicates. Granite is commonly foun






2. A vent in the surface of the Earth & from which lava & ash & and gases erupt.






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






4. An area where fresh water comes into contact with seawater & usually in a partly enclosed coastal body of water; a mix of fresh and salt water where the current of a stream meets the tides.






5. 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






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






7. Molten rock & containing dissolved gases and suspended solid particles. At the Earth's surface & magma is known as lava.






8. Deep steep-sided depression in the ocean floor caused by the subduction of oceanic crust beneath either other oceanic crust or continental crust.






9. Glacial drift composed of rock fragments that range from clay to boulder size and randomly arranged without bedding.






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






11. A giant structure that contains hundreds of billions of stars.






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






13. 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.






14. The zones of seismic activity long which plates are in contact.






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






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






17. A system that uses a constellation of 24 satellites & their ground stations & and individual GPS receivers to accurately locate points on Earth.






18. 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.






19. 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.






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






21. A permeable region of rock or soil through which ground water can move.






22. A guide to reading a map that typically contains distance scales & arrows indicating direction & and/or explanations of symbols used.






23. The portion of the continental margin that extends as a gently sloping surface from the shoreline seaward to a marked change in slope at the top of the continental slope . Seaward depth averages about 130 m.






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






25. 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.






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






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






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






29. A conical volcano formed by the accumulation of pyroclastic debris around a vent.






30. A general term for a relatively hard layer of soil at or just below the ground surface & cemented by silica & iron oxide & calcium carbonate & or organic matter.






31. The rock beneath the soil.






32. Deep steep-sided depression in the ocean floor caused by the subduction of oceanic crust beneath either other oceanic crust or continental crust.






33. The point on the Earth's surface directly above the focus of an earthquake.






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






35. 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






36. Imaginary lines on a map or globe that measure distance in degrees north or south of the equator. Latitude lines extend horizontally & from east to west on a globe.






37. The two days of the year on which the noon sun is directly overhead at either 23.5






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






39. Containing moisture.






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






41. Living on land.






42. A flood that rises and falls very rapidly.






43. The acidity in rain due to gases from internal combustion engines and coal- and oil-burning power plants.






44. 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.






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






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






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






48. A reverse fault on which the dip angle of the fault plane is 15 degrees or less.






49. 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.






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