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Earth Science

Subject : science
Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. Named after the Roman god of the sea. It is the eighth planet from the Sun.






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






3. The generally dark & more or less stable part of the organic matter in a soil & so well decomposed that the original sources cannot be identified.






4. An area in which a large number of windmills have been erected to generate electrical power.






5. Enormous & thick sheets of rock that are part of the Earth's upper mantle that move and adjoin each other along zones of seismic activity. Many tectonic plates extend underneath both continents and sea floor.






6. 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.






7. A pillar formed as a stalactite and stalagmite meet.






8. The pattern of water circulation from the ocean to the atmosphere to the land and back to the ocean.






9. An area in which a large number of windmills have been erected to generate electrical power.






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






11. 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.






12. The relationship between distances in the area being mapped and distances in the map itself.






13. To change back and forth uncertainly.






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






15. The attractive force between two objects; its magnitude depends on their masses and the distance between them.






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






17. The two days of the year on which the noon sun is directly overhead at either 23.5






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






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






20. (Latin- Terra & Greek- Gaia) Earth is named after the ancient Germanic Goddess of the soil. It is the third planet from the Sun.






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






22. A device containing a free-swinging magnetic needle that is attracted to Earth's magnetic North Pole. Used to determine direction of travel.






23. Refers to rock or sediments made up primarily of broken fragments of pre-existing rocks or minerals.






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






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






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






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






28. Where one plate slides beneath another plate as the two are pushed together & a subduction zone.






29. Surficial mining & in which the valuable rock is exposed by removal of overlying rock or soil.






30. The amount of dissolved salt in water.






31. The explosion of a dying giant or supergiant star.






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






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






34. The transformation of a soil from a solid to a liquid state as the result of increased pore pressure.






35. 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.






36. Extending across a continent.






37. A type of thermal spring which ejects water intermittently with considerable force.






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






39. 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.






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






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






42. 1. A mass of sand & gravel & or alluvium deposited on the bed of a stream & sea & or lake & or at the mouth of a stream 2. A unit of pressure & approximately equal to atmospheric pressure at sea level.






43. A large amount of gas and dust in space & spread out in an immense volume.






44. A molecule composed of three atoms of oxygen and mostly found in the stratosphere. Though beneficial in the upper atmosphere & at ground level & ozone is called photochemical smog & and is a respiratory irritant and considered a pollutant.






45. An informal term to include all geologic time from the beginning of the Earth to the beginning of the Cambrian period 570 million years ago.






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






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






48. The most recent eon of geologic time beginning 570 million years ago and continuing to the present.






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






50. 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.







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