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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 major drainage divide separating the drainage to one ocean from another.






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






3. 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 &






4. A steep-sided rounded extrusion of highly viscous lava squeezed out from a volcano and forming a dome-shaped or bulbous mass above and around the volcanic vent. The structure generally develops inside a volcanic crater.






5. 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.






6. The prediction that climate will warm as a result of the addition to the atmosphere of humanly produced greenhouse gases.






7. An ingredient in a food or other substance that nourishes or promotes growth.






8. A vent on the seafloor from which hydrothermal fluids are emitted. Upon mixing with seawater and cooling & the fluids precipitate a cloud of fine-grained sulfide minerals that resembles a cloud of black smoke.






9. The top of a wave.






10. The process of one plate descending beneath another.






11. The green pigment in the cells of many plants that enables them to use sunlight to convert carbon dioxide and water into carbohydrates in the process called photosynthesis.






12. A seismic body wave that involves particle motion from side to side & perpendicular to the direction of wave propagation. S-waves are slower than P-waves and cannot travel through a liquid.






13. 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.






14. The peak flow of water that tops the banks of a stream channel.






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






16. Living on land.






17. A mass of ice & formed by the recrystallization of snow & that flows forward & or has flowed at some time in the past.






18. An atmospheric shield providing the Earth with protection from ultra-violet rays which can cause sun burn & skin cancer and the destruction of the delicate plant life which supports the planet's food chain.






19. The low spot between two successive waves.






20. A time of unusual winds and currents in the Pacific Ocean . El Nino generally causes warmer-than-normal sea surface temperatures and increased rainfall and storm activity.






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






22. Till deposited from main body of glacier during ablation.






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






24. All unconsolidated materials above bedrock. Natural earthy materials on the Earth's surface & in places modified or even made by human activity & containing living matter & and supporting or capable of supporting plants out of doors.






25. 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.






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






27. A minor tremor that precedes an earthquake. An increase in seismicity may signal that a major release of strain energy is about to occur.






28. Any form of water & such as rain & sleet & or snow & that falls to Earth's surface.






29. 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 .






30. No identifiable layers of minerals in a rock sample






31. 1. A steep-walled & usually conical depression at the summit or on the flanks of a volcano & resulting from the explosive ejection of material from a vent. 2. A bowl-shaped depression with a raised & overturned rim produced by the impact of a meteori






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






33. A chuck of rock or dust in space.






34. A period of dryness & that when prolonged & causes damage to crops; a shortage of water.






35. A group of stars that appear to make a pattern in the sky. The Big Dipper is a constellation.






36. Lacking in rainfall & very dry.






37. 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.






38. 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.






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






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






41. Where two plates are moving in opposite directions as in a mid-ocean ridge.






42. A post of dripstone growing up from a cave floor.






43. A device built to study distant objects by making them appear closer.






44. A region of high heat flow on the Earth's surface & thought to lie above a mantle plume .






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






46. Water that flows across watersheds during and immediately after severe rainstorms. In populated areas & stormwater runoff is often water that cannot be handled by existing sewer systems. Stormwater runoff is the leading source of water pollution in t






47. Destruction of the ozone layer caused by the release of CFC's (chlorofluorocarbons) into the atmosphere which react chemically with ozone and break it down into different gases.






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






49. Imaginary lines on a map or globe that measure distance in degrees east or west of the prime meridian. Longitude lines extend vertically & from pole to pole on a globe.






50. The uprush of a wave onto the beach followed by the return flow of the water down the beach slope in the intervals between waves.






Can you answer 50 questions in 15 minutes?



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