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. The amount of material a stream carries in suspension.






2. A flat & dry plain covered with short grass.






3. The rise and fall of sea level caused by the gravitational pull of the Sun and Moon on the Earth.






4. In the geologic time scale a unit of time less than an era and greater than an epoch. Example: The Tertiary period was the earliest period in the Cenozoic era and included & among others & the Eocene epoch.






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






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






7. A general term including both oil and natural gas.






8. Living parts of the environment that can renew or replace themselves.






9. A downward distortion or dimple in the water table that forms as a well pumps water faster than it can flow through the aquifer.






10. 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.






11. A flood that rises and falls very rapidly.






12. The galaxy where Earth is located.






13. (Greek-Aphrodite)named after the Roman goddess of love. It is the planet closest in size to Earth and the second planted from the Sun.






14. A cyclical pattern of movement in a fluid body such as the ocean & the atmosphere & or the Earth's mantle & driven by density variations which in turn are the result of differences in temperature from one part of the fluid to another.






15. The process by which a binding & or cementing & agent is precipitated in spaces among individual particles of a deposit. Common cementing agents are calcite & quartz & and dolomite.






16. A glaciated valley now flooded by the sea.






17. Either the northern or southern half of the Earth as divided by the equator & or the eastern or western half as divided by a meridian.






18. The current geologic era & which began 66.4 million years ago and continues to the present.






19. To preserve & or to avoid wasteful use.






20. The process of removing metal from ore.






21. 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.






22. A mound or ridge of sediment deposited by a glacier.






23. Any place where bedrock is visible on the surface of the Earth.






24. 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.






25. Sediment formed by chemical precipitation from water. Example: halite precipitated as the result of the evaporation of sea water.






26. A measure of acidity.






27. A system involving continuous interaction of the solid Earth & the atmosphere & the oceans and living things.






28. Highly mafic igneous volcanic rock & typically fine-grained and dark in color; rough volcanic equivalent of gabbro. Basalt is the most abundant volcanic rock in the Earth's crust.






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






30. A detailed mathematical description of the cause-and-effect relationships between events that can be used to predict or explain other such events.






31. Extending across a continent.






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






33. 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.






34. 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.






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






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






37. Mountains & characterized by extensive folding and thrust faulting & that form at convergent plate boundaries on continents.






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






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






40. A dense & hot (sometimes incandescent) cloud of volcanic ash and gas produced in a Pelean eruption.






41. The amount of dissolved salt in water.






42. 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






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






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






45. 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.






46. A soft compact calcite & CaCO3 & with varying amounts of silica & quartz & feldspar & or other mineral impurities & generally gray-white or yellow-white and derived chiefly from fossil seashells.






47. An instrument used to measure the speed of wind.






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






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






50. Swamp that forms in the low lying flood plain behind a levee.