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 large area of flat or nearly flat land.






3. A Hawaiian term for a lava flow that has a rough & jagged surface.






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






5. A supercontinent that existed from the Jurassic to Early Tertiary after splitting from Pangea; composed of Laurentia & Baltica & Avalonia & (modern North America & Scandinavia & Greenland & Western and Central Europe); eventually fragmented into Eur






6. Heat transport by moving particles & and the thermal energy that they carry & to a new location.






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






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






9. A depression in the ground formed by the melting of a block of glacier ice buried or partially buried by drift.






10. The theory that states that the present-day continents are the fragmented pieces of preexisting larger landmasses called supercontinents.






11. Shapes & like mountains or hills that make up the Earth's surface.






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






13. The outermost layer of the Earth & varying in thickness from about 10 kilometers (6 miles) below the oceans & to 65 kilometers (about 40 miles) below the continents; represents less than 1 percent of the Earth's volume.






14. A large & basin-shaped volcanic depression & more or less circular in form. Typically steep-sided & found at the summit of a shield volcano.






15. A measure of the size of an earthquake in terms of the damage it causes.






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






17. The line formed by the intersection of the axial plane of a fold with a bedding plane & marking where the bed shows its maximum curvature.






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






19. 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 &






20. The top of a wave.






21. 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.






22. The tendency of a moving object to continue in a straight line or a stationary object to remain in place.






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






24. The vertical distance between the crest and adjacent trough of a wave.






25. The process by which an unconsolidated deposit of sediments is converted in to solid rock.






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






27. The tendency of a moving object to continue in a straight line or a stationary object to remain in place.






28. 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.






29. 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.






30. The level of light that penetrates through water.






31. Uranus is named after the Roman god of the sky. It is the seventh planet from the Sun.






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






33. Woodland that usually gets at least 100 inches of rain each year.






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






35. A deposit of partly decayed plant remains in a very wet environment; marsh or swamp deposit of plant remains containing more than 50 percent carbon.






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

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37. The area bordering a stream over which water spreads when the stream tops its channel banks.






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






39. Materials that are found in nature that are useful or necessary for people to live.






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






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






42. The point on the Earth's surface that is directly above the focus of an earthquake.






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






44. A narrow & steep-walled depression in the ocean floor & much deeper than the adjacent ocean and associated with a subduction zone.






45. 1. Breach in a natural levee . 2. Deep crevice or open fracture in glacier ice.






46. Glacial deposits laid down directly by glaciers or laid down in lakes & ocean & or streams as result of glacial activity.






47. A landscape that develops from the action of ground water in areas of easily soluble rocks. It is usually characterized by caves & underground drainage and sinkholes.






48. The condition of equilibrium & comparable to floating & of units of the lithosphere above the asthenosphere.






49. 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.






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