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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 disease-causing organism or entity & such as a bacterium or virus.






2. The dust-sized & sharp-edged & glassy particles resulting from an explosive volcanic eruption.






3. All of space and everything in it.






4. A process of land degradation initiated by human activity & particularly in the zones along the margins of deserts.






5. The science that deals with the study of the planet Earth--the materials of which it is made & the processes that act to change these materials from one form to another & and the history recorded by these materials; the forces acting to deform the ou






6. A small ice sheet.






7. The line separating land and water.






8. Jupiter is named after the Roman king of the gods. It is the fifth planet from the Sun.






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






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






11. 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.






12. An area where fresh water comes into contact with seawater & usually in a partly enclosed coastal body of water; a mix of fresh and salt water where the current of a stream meets the tides.






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






14. A curved belt of volcanic islands lying above a subduction zone.






15. 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






16. Any seismic wave that travels through the body of Earth & rather than along its surface.






17. The presence of layers in some rocks caused by parallel alignment of minerals.






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






19. The processes (mechanical and chemical) responsible for the wearing away & loosening & and dissolving of materials of the Earth's crust.






20. A large ridge or mound-like structure within a body of water that is built by calcareous organisms such as corals & red algae & and bivalves.






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






22. The outermost layer of the Earth & varying in thickness from about 10 kilometers (6 miles) below the oceans & to 65 kilometers (about 40 miles) below the continents; represents less than 1 percent of the Earth's volume.






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






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






25. A small & dust-bearing whirlwind.






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






27. A type of volcanic eruption characterized by nuees ardentes and the development of lava domes.






28. The speed at which water flows.






29. 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.






30. The resistance of a mineral to scratching & as measured by the Mohs scale.






31. A division of geologic time next smaller than the eon and larger than a period. Example: The Paleozoic era is in the Phanerozoic eon and includes & among others & the Devonian period.






32. The process by which an unconsolidated deposit of sediments is converted in to solid rock.






33. A continuous well-defined mass of material of sufficient ore content to make extraction economically feasible. compare mineral deposit.






34. The amount of material a stream carries in suspension.






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






36. Large area of extremely flat ocean floor lying near a continent and generally over 4 km in depth.






37. The seaward edge of coast between low tide and effective wave action.






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






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






40. Glacial drift composed of rock fragments that range from clay to boulder size and randomly arranged without bedding.






41. A curved belt of volcanic islands lying above a subduction zone.






42. A roughly circular reef with an occasional small & low & coral sand island surrounding a shallow lagoon.






43. The straightening and/or deepening of a river channel.






44. Elongated rises on the ocean floor where basalt periodically erupts & forming new oceanic crust.






45. The method of locating an epicenter by determining how far it lies from three widely separated seismographs.






46. Evidence in rock of the presence of past life & such as a dinosaur bone & an ancient clam shell & or the footprint of a long-extinct animal as well as life history artifacts.






47. 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.






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






49. The process by which building stone & usually in blocks or sheets & is extracted from the Earth. radiation -- (Electromagnetic radiation) -- energy that travels through space in the form of waves without the intervention of matter & as in the transp






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







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