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 naturally occurring material from which a mineral or minerals of economic value can be extracted at a profit.






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






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






4. The principle that states the processes operating to change the Earth in the present also operated in the past.






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






6. A time of unusual winds and currents in the Pacific Ocean . El Nino generally causes warmer-than-normal sea surface temperatures and increased rainfall and storm activity.






7. To preserve & or to avoid wasteful use.






8. The rock beneath the soil.






9. A steep-sided rounded extrusion of highly viscous lava squeezed out from a volcano and forming a dome-shaped or bulbous mass above and around the volcanic vent. The structure generally develops inside a volcanic crater.






10. 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






11. A layer of sedimentary rock; plural is strata.






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






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






14. A Hawaiian term for a lava flow that has a rough & jagged surface.






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






16. The prediction that climate will warm as a result of the addition to the atmosphere of humanly produced greenhouse gases.






17. A mass of ice & formed by the recrystallization of snow & that flows forward & or has flowed at some time in the past.






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






19. The arrangement of rock units in the proper chronological order from youngest to oldest.






20. The distance light travels through a vacuum in one year.






21. The innermost zone of Earth. It consists of two parts & an outer liquid section and an inner solid section & both chiefly of iron and nickel with about 10 percent lighter elements. It is surrounded by the mantle.






22. Mercury is named after the Roman messenger of the gods. It is the closest to the Sun.






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






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






25. A narrow & elongate region in which one lithospheric plate descends relative to another.






26. Glacial deposits laid down directly by glaciers or laid down in lakes & ocean & or streams as result of glacial activity.






27. A steep-sided rounded extrusion of highly viscous lava squeezed out from a volcano and forming a dome-shaped or bulbous mass above and around the volcanic vent. The structure generally develops inside a volcanic crater.






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






29. 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.






30. 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.






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






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






33. A vent in the surface of the Earth & from which lava & ash & and gases erupt.






34. Uranus is named after the Roman god of the sky. It is the seventh planet from the Sun.






35. A natural depression in the surface of the land caused by the collapse of the roof of a cavern or subterranean passage & generally occurring in limestone regions.






36. The direction & north (normal) or south (reversed) & that a magnetic compass needle points.






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






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






39. The process of one plate descending beneath another.






40. A steep or vertical cliff & either above or below sea level.






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






42. Ratio between weight of given volume of material and weight of equal volume of pure water.






43. 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.






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






45. A large volume of dust-sized particles lifted high into the atmosphere.






46. An imaginary circle around the earth that represents the halfway mark between the North and South Poles and establishes the boundary between the Northern and Southern Hemispheres.






47. The closest galaxy to the Milky way. It is approximately 2 million light-years away.






48. A person who makes maps.






49. The point on the Earth's surface directly above the focus of an earthquake.






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