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






2. (Latin- Sol & Greek- Helios)the closest star to Earth. It is a giant ball of gas without any solid surface.






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






4. A hot & gaseous & self-luminous celestial body & as the Sun.






5. A commonly used measure of earthquake magnitude & based on a logarithmic scale. Each integral step on the scale represents a tenfold increase in the extent of ground shaking & as recorded on a seismograph.






6. An instrument that merely indicates the occurrence of an earthquake.






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






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






9. 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.






10. A famous scientist who proposed that the Sun was the center of the solar system not the Earth. (Heliocentrism)






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






12. To preserve & or to avoid wasteful use.






13. The part of the crust that directly underlies the continents and continental shelves. Averages about 35 km in thickness & but may be over 70 km thick under largest mountain ranges.






14. Any molten material that is extrusive or volcanic & or the rock that forms from a molten extrusive. Molten rock that flows at the Earth's surface.






15. A flood that rises and falls very rapidly.






16. The zone below the zone of aeration in which all pore spaces are filled with water.






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. That portion of the resources for a valuable mineral commodity that can be extracted from the Earth at a profit today.






19. A ridge of high water associated with a hurricane and which floods over the shore .






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






21. A guide to reading a map that typically contains distance scales & arrows indicating direction & and/or explanations of symbols used.






22. The level of light that penetrates through water.






23. Living on land.






24. A volcano in the shape of a flattened cone & broad and low & built by very fluid flows of basaltic lava.






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






26. The effect of water and carbon dioxide absorbing outgoing infrared radiation & raising a system's temperature. The term is generally used with reference to the Earth's temperature & although it can also be applied to other systems & such as greenhous






27. 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






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






29. 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.






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






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






32. A rock changed from its original form and/or composition by heat & pressure &shearing stress & or chemically active fluids & or some combination of them.






33. A sea level change due to change in load on Earth's crust.






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






35. An area of land that delivers runoff water & sediment & and dissolved substances to surface water bodies & such as rivers or lakes. All watersheds consist of boundaries & a basin and collection areas.






36. Objects revolving around the sun that are too small and too numerous to be considered planets.






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






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






39. 1. A low & bowl-shaped area of land surrounded by higher lands. 2. any large depression in which sediments are deposited.






40. Formed when an organism is flattened (compressed) and a thin film of organic material from its body is left in the rock.






41. A process by which salts accumulate in soil.






42. The line separating land and water.






43. 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.






44. A reverse fault on which the dip angle of the fault plane is 15 degrees or less.






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






46. A building that contains one or more telescopes.






47. The study of earthquakes & and of the structure of the Earth by both natural and artificially generated seismic waves.






48. A river that is able to maintain its flow through a desert because of water received from outside the desert.






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






50. 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.







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