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






2. A geometrical form taken by a mineral & giving external expression to orderly internal atomic arrangement.






3. Pluto is named after the Roman god of the Underworld. No longer considered a planet.






4. The environment where a particular plant or animal is normally found.






5. Lava extruded beneath water characterized by pillow shapes.






6. A waterway from open ocean into a lagoon.






7. Fossils formed when water containing minerals leaks into a mold. The minerals harden to form a copy of the original structure or organism.






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






9. An eruption of lava that takes place from a fracture & usually without producing a cone.






10. Extending across a continent.






11. Any porous and permeable rock that yields oil or natural gas.






12. A process by which salts accumulate in soil.






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






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






15. 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.






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






17. The outermost part of the core. It is liquid & about 1 &700 km thick & and separated from the inner & solid core by a transition zone about 565 km thick.






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






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






20. An artificial hill formed by the debris of successive human settlements.






21. A collection of maps.






22. Open pit mining & typically for coal.






23. 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.






24. A large area of flat or nearly flat land.






25. A volcanic mountain on the seafloor. If flat-topped & it is a guyot.






26. A type of disintegration in which jointed rock is forced apart by the expansion of water as it freezes in fractures.






27. A measure of acidity.






28. Flat land covered with tall grass and wildflowers.






29. A low & nearly flat accumulation of sediment deposited at the mouth of a river or stream & commonly triangular or fan-shaped.






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






31. (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.






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






33. A broad & mound-like mass of glacier ice that usually spreads radially outward from a central zone.






34. The point on the Earth's surface where a magnetic needle points vertically downward (north magnetic pole) or vertically upward (south magnetic pole).






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






36. Property possessed by certain rocks of breaking with relative ease along parallel planes or nearly parallel surfaces in their crystal structures where the bonds are weakest.






37. A type of disintegration in which jointed rock is forced apart by the expansion of water as it freezes in fractures.






38. A floating ice sheet extending across water from a land-based glacier.






39. Weathering processes that are the result of chemical reactions. Example: the transformation of orthoclase to kaolinite.






40. A statement of relative age in layered rocks: In a series of sedimentary rocks that has not been overturned & the topmost layer is always the youngest and the bottommost layer is always the oldest.






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






42. A division of geologic time next shorter than a period. Example: the Pleistocene epoch is in the Quaternary period.






43. The layer of gases (air) & that surrounds a planet or moon.






44. A sedimentary rock made up of chemical sediments. Example: rock salt.






45. A planetary satellite.






46. A narrow strip of land along the margin of the ocean extending inland for a variable distance from low water mark.






47. Distance over which wave-forming winds blow.






48. Produced as a wave steepens and falls forward as the wave nears the shore.






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






50. Iron & aluminum & magnesium & manganese & and titanium. Ores of the abundant metals only need to be 3 - 5 times as metal-rich as average rock.







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