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Earth Science

Subject : science
Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. Any form of water & such as rain & sleet & or snow & that falls to Earth's surface.






2. 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.






3. An icicle-shaped accumulation of dripstone hanging from cave roof.






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






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






6. Scratches & or small channels & gouged by glacier action. Occur on boulders & pebbles & and bedrock. Striations along bedrock indicate direction of ice movement.






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






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






9. The generally dark & more or less stable part of the organic matter in a soil & so well decomposed that the original sources cannot be identified.






10. Igneous. Antonym of intrusive. Synonym of volcanic. Pertaining to igneous rocks or features formed from lava released on the Earth's surface.






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






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






13. A sedimentary rock composed primarily of biogenic sediments.






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






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






16. The oldest eon in Earth history & extending from the origin of the Earth to about 3.9 billion years ago.






17. An individual grain or constituent of a rock.






18. A supercontinent that existed from the the end of the Permian to the Jurassic & 300 to 200 million years ago & assembled from large continents like Euramerica & Gondwana & and Siberia & as well as smaller landmasses like the Cathaysian and Cimmerian






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






20. 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.






21. 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






22. A continuous well-defined mass of material of sufficient ore content to make extraction economically feasible. compare mineral deposit.






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






24. That portion of the Earth below the crust and reaching to about 2 &780 km & where a transition zone of about 100 km thickness separates it from the core.






25. Living in water.






26. 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.






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






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






29. A steep or vertical cliff & either above or below sea level.






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






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






32. A plate boundary in which plates on opposite sides of the boundary move past each other in opposite directions. The San Andreas fault of California is a good example.






33. Occurs at the intersection of the water table with the ground surface.






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






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






36. A cavity in a lava & formed by the entrapment of a gas bubble during solidification of the lava.






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






38. A portable time keeper with a mechanism for ensuring accuracy and adjusting itself & used for determining longitude at sea.






39. A delta formed at both sides of a tidal inlet.






40. Geologic time expressed in years before the present.






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






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






43. A lake in an abandoned meander.






44. A hydrocarbon (coal or petroleum) that can be extracted from the Earth for use as a fuel. Fossil fuels are non-renewable energy sources.






45. The symbol used on a map to indicate directions & both cardinal and ordinal.






46. A ball of ice and dust & whose orbit is a long & narrow ellipse.






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






48. A hydrocarbon (coal or petroleum) that can be extracted from the Earth for use as a fuel. Fossil fuels are non-renewable energy sources.






49. The accumulation of material in layers or beds.






50. To change back and forth uncertainly.







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