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 area immediately below the ground surface within which pore spaces are partially filled with water and partially filled with air.






2. A process by which salts accumulate in soil.






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






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






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






6. 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.






7. A sharp bend & loop or turn in a stream's course. When abandoned & it is called a meander scar or an oxbow.






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






9. A measure of the size of an earthquake in terms of the damage it causes.






10. A group of islands; an expanse of water with scattered islands.






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






12. A commonly used scale of earthquake intensity.






13. A natural open space underground & large enough for a person to enter. Most commonly occur by the dissolution of soluble rocks & generally limestone.






14. A landscape that develops from the action of ground water in areas of easily soluble rocks. It is usually characterized by caves & underground drainage and sinkholes.






15. A landscape that develops from the action of ground water in areas of easily soluble rocks. It is usually characterized by caves & underground drainage and sinkholes.






16. A seismic body wave that involves particle motion from side to side & perpendicular to the direction of wave propagation. S-waves are slower than P-waves and cannot travel through a liquid.






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






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






19. The initial point within the Earth that ruptures in an earthquake & directly below the epicenter. The point within the Earth which is the center of an earthquake & at which strain energy is first released and converted to elastic wave energy.






20. A large & basin-shaped volcanic depression & more or less circular in form. Typically steep-sided & found at the summit of a shield volcano.






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






22. Mars is named after the Roman god of war. It is the fourth planet from the Sun.






23. 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






24. The process of one plate descending beneath another.






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






26. A coral reef separated from the mainland by a lagoon.






27. 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.






28. A large & basin-shaped volcanic depression & more or less circular in form. Typically steep-sided & found at the summit of a shield volcano.






29. A dense & hot (sometimes incandescent) cloud of volcanic ash and gas produced in a Pelean eruption.






30. The acidity in rain due to gases from internal combustion engines and coal- and oil-burning power plants.






31. The first scientist to make systematic use of the telescope in looking at the heavens.






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






33. A supercontinent that existed from the the end of the Permian to the Jurassic & 300 to 200 million years ago & assembled from large continents like Euramerica & Gondwana & and Siberia & as well as smaller landmasses like the Cathaysian and Cimmerian






34. A portable time keeper with a mechanism for ensuring accuracy and adjusting itself & used for determining longitude at sea.






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






36. The internal resistance to flow in a liquid.






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






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






39. A waterway from open ocean into a lagoon.






40. Any accumulation of material & by settling from water or air & chemical precipitation & evaporation from solution & etc.






41. A vertical conduit through the Earth's crust below a volcano & through Which magma has passed.






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






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






44. A narrow strip of land that has water on either side and connects two larger bodies of water.






45. A thickened elevated region of Earth's crust that is mainly (but not entirely) above sea level.






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






47. A valley caused by extension of the Earth's crust. Its floor forms as a portion of the crust moves downward along normal faults.






48. The accumulation of material in layers or beds.






49. 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.






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