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. Pluto is named after the Roman god of the Underworld. No longer considered a planet.






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






4. To preserve & or to avoid wasteful use.






5. 1. A low & bowl-shaped area of land surrounded by higher lands. 2. any large depression in which sediments are deposited.






6. A vertical conduit through the Earth's crust below a volcano & through Which magma has passed.






7. That part of the continental margin that lies between the continental shelf and the continental rise. Slope relatively steep & 3o - 6o. The continental slope is underlain by crustal rocks of the continent.






8. A large amount of gas and dust in space & spread out in an immense volume.






9. The rock beneath the soil.






10. Distance over which wave-forming winds blow.






11. Lies half way between the north and south magnetic poles.






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






13. 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.






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






15. The amount of material a stream carries in suspension.






16. The region of a shore that is covered at high tide and exposed at low tide.






17. A roughly circular reef with an occasional small & low & coral sand island surrounding a shallow lagoon.






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






19. A zone in the Earth between 400 and 670 km below the surface separating the upper mantle from the lower mantle.






20. Lies half way between the north and south magnetic poles.






21. A spring whose temperature is 6.5o C or more above mean annual air temperature.






22. 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.






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






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






25. The solid innermost part of the core with a diameter of a little over 1 &200 km.






26. The mass of an object divided by its volume.






27. The remains of an extremely massive star pulled into a small volume by the force of gravity.






28. The remains of an extremely massive star pulled into a small volume by the force of gravity.






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






30. Water beneath the Earth's surface.






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






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






33. The explosion of a dying giant or supergiant star.






34. The height of a place above sea level.






35. A detailed mathematical description of the cause-and-effect relationships between events that can be used to predict or explain other such events.






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






37. A type of volcanic eruption characterized by nuees ardentes and the development of lava domes.






38. Applies to igneous rocks that cool on the surface of the Earth & including beneath water; typically with small crystals due to the rapidity of cooling. Synonym of extrusive. Antonym of plutonic.






39. A segment of an active fault zone that has not experienced a major earthquake during a time period when most other segments of the zone have. They are generally regarded as having a higher potential for future earthquakes.






40. Heat extracted from the Earth for use as an power source.






41. The tectonic region in which two plates meet.






42. Any natural concentration of a valuable material in the Earth's crust & whether that material can be extracted profitably or not.






43. The closest star to Earth besides the sun. It is approximately 4 light years away.






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






45. The naturally occurring material from which a mineral or minerals of economic value can be extracted at a profit.






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






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






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






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






50. A process by which salts accumulate in soil.