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. Till deposited from main body of glacier during ablation.






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






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






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






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






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






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






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






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






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






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






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






13. The Sun with all the celestial bodies that revolve around it.






14. An area of land that delivers runoff water & sediment & and dissolved substances to surface water bodies & such as rivers or lakes. All watersheds consist of boundaries & a basin and collection areas.






15. 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.






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






17. A layer of sedimentary rock; plural is strata.






18. The principle that states the processes operating to change the Earth in the present also operated in the past.






19. A community of plants and/or animals and its physical environment & regarded as a unit.






20. A mudflow composed chiefly of pyroclastic material on the flanks of a volcano.






21. A layer of sedimentary rock; plural is strata.






22. 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.






23. Refers to rock or sediments made up primarily of broken fragments of pre-existing rocks or minerals.






24. 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






25. A sedimentary rock made up of chemical sediments. Example: rock salt.






26. The upper horizons in a soil & through which gravitational moisture travels & removing soluble decomposition products.






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






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






29. The amount of dissolved salt in water.






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






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






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






33. A geometrical form taken by a mineral & giving external expression to orderly internal atomic arrangement.






34. The accumulation of material in layers or beds.






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






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






37. The partial or complete blocking from view of one object by another.






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






39. Iron & aluminum & magnesium & manganese & and titanium. Ores of the abundant metals only need to be 3 - 5 times as metal-rich as average rock.






40. A molecule composed of three atoms of oxygen and mostly found in the stratosphere. Though beneficial in the upper atmosphere & at ground level & ozone is called photochemical smog & and is a respiratory irritant and considered a pollutant.






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






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






43. 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.






44. A broad & deep & generally straight furrow carved in bed rock by the abrasive action of debris embedded in a moving glacier. Larger and deeper than a glacial striation.






45. 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.






46. A flood that rises and falls very rapidly.






47. Mercury is named after the Roman messenger of the gods. It is the closest to the Sun.






48. Any solid material that has settled out of a state of suspension in liquid.






49. A sharp bend & loop or turn in a stream's course. When abandoned & it is called a meander scar or an oxbow.






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