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 resistance of a mineral to scratching & as measured by the Mohs scale.






2. A valley caused by extension of the Earth's crust. Its floor forms as a portion of the crust moves downward along normal faults.






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

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






5. Sediments produced directly by the life processes of plants or animals.






6. A person who makes maps.






7. A planetary satellite.






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






9. Banks of sand and silt along stream bank built by deposition in small increments during successive floods.






10. 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.






11. A division of geologic time next smaller than the eon and larger than a period. Example: The Paleozoic era is in the Phanerozoic eon and includes & among others & the Devonian period.






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






13. A rock that has crystallized from a molten state.






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






15. Plutonic. Antonym of extrusive. Pertaining to igneous rocks or features formed by the emplacement of magma in pre-existing rocks.






16. The attractive force between two objects; its magnitude depends on their masses and the distance between them.






17. The rock beneath the soil.






18. A large ridge or mound-like structure within a body of water that is built by calcareous organisms such as corals & red algae & and bivalves.






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






20. The color of a mineral in its powdered form obtained from scraping a sample on a ceramic plate






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






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






23. A unit of length used in sea navigation based on the length of 1 minute of arc on a great circle. On Earth & 1 minute of latitude.






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






25. The top of a wave.






26. The theory of Plate Tectonics states that the Earth's crust is fragmented into a dozen or more large and small pieces floating on a semi-molten mantle.






27. A large ridge or mound-like structure within a body of water that is built by calcareous organisms such as corals & red algae & and bivalves.






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






29. An eruption of lava that takes place from a fracture & usually without producing a cone.






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






31. Distance over which wave-forming winds blow.






32. A term applied to large areas of basaltic lava presumably extruded from fissures.






33. A worldwide change in sea level & such as caused by melting glaciers.






34. Plutonic. Antonym of extrusive. Pertaining to igneous rocks or features formed by the emplacement of magma in pre-existing rocks.






35. A wall built out from the shore & usually at perpendicular to it to trap sand carried by longshore currents .






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






37. An accumulation of wind driven sand into a distinctive shape.






38. Ratio between weight of given volume of material and weight of equal volume of pure water.






39. The uprush of a wave onto the beach followed by the return flow of the water down the beach slope in the intervals between waves.






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






41. A hole or basin cut into bedrock of a stream by the abrasive action of pebbles and sand swirled by turbulent stream flow.






42. The first scientist to make systematic use of the telescope in looking at the heavens.






43. To wash or scrub away.






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






45. A pillar formed as a stalactite and stalagmite meet.






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






47. Forms along a coast as wave erosion cuts through a headland.






48. Ratio between weight of given volume of material and weight of equal volume of pure water.






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






50. Long narrow beaches separated in many places from the mainland by lagoons.