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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 glaciated valley now flooded by the sea.






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






3. A planetary satellite.






4. The precipitation that runs directly off the surface to stream or body of standing water.






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






6. 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.






7. The southern portion of the late Paleozoic supercontinent known as Pangea. It means & literally 'Land of the Gonds' (a people of the Indian subcontinent).The supercontinent existed from Cambrian to Jurassic time & mainly composed of South America &






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






9. The great circle on the Earth's surface passing through The North and South Poles & which is considered 0 degrees longitude. The prime meridian passes through Greenwich & England & and is used as a reference point for measuring longitude east and w






10. 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.






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






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






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






14. An aggregate of one or more minerals in varying proportions.






15. A waste material that contaminates air & water & or soil.






16. No identifiable layers of minerals in a rock sample






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






18. The initial point within the Earth that ruptures in an earthquake & directly below the epicenter. The point within the Earth which is the center of an earthquake & at which strain energy is first released and converted to elastic wave energy.






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






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






21. He area from which a stream and its tributaries receives its water.






22. A seismic body wave that involves particle motion & alternating compression and expansion & in the direction of wave propagation. It is the fastest seismic wave. compare S-wave .






23. A disease-causing organism or entity & such as a bacterium or virus.






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






25. A comet that passed Earth in 1997 and won't return to the inner solar system until the year 4377.






26. An era of geologic time lasting from 570 to 245 million years ago.






27. A process of erosion in which wind carries off particles of dust and sand.






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






29. Containing moisture.






30. A waste material that contaminates air & water & or soil.






31. 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.






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






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






34. Deserts in zones of descending air between 25 degrees and 30 degrees north and south latitude.






35. A sedimentary rock composed primarily of biogenic sediments.






36. 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.






37. He area from which a stream and its tributaries receives its water.






38. Synonym of intrusive. Antonym of volcanic. Applies to igneous rocks formed beneath the surface of the Earth; typically with large crystals due to the slowness of cooling.






39. A substance that produces positively charged hydrogen ions (H+) when dissolved in water.






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






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






42. An instrument that detects & magnifies & and records vibrations of the Earth & especially earthquakes.






43. The arrangement of rock units in the proper chronological order from youngest to oldest.






44. The reflection of light on a given mineral's surface & classified by intensity and quality.






45. A low & nearly flat accumulation of sediment deposited at the mouth of a river or stream & commonly triangular or fan-shaped.






46. A substance that produces positively charged hydrogen ions (H+) when dissolved in water.






47. An isolated & steep-sided & rocky mass or island just offshore from a rocky headland & usually on a shore platform.






48. In a stream & the volume of water passing through a channel in a given time.






49. Any object that revolves around another object in space.






50. Large area of extremely flat ocean floor lying near a continent and generally over 4 km in depth.







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