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






2. An area of land that delivers runoff water & sediment & and dissolved substances to surface water bodies & such as rivers or lakes. All watersheds consist of boundaries & a basin and collection areas.






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






4. The region of a shore that is covered at high tide and exposed at low tide.






5. Occurs at the intersection of the water table with the ground surface.






6. A tool for measuring the relative clarity of water.






7. 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.






8. A worldwide change in sea level & such as caused by melting glaciers.






9. Water that flows across watersheds during and immediately after severe rainstorms. In populated areas & stormwater runoff is often water that cannot be handled by existing sewer systems. Stormwater runoff is the leading source of water pollution in t






10. The height of a place above sea level.






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






12. 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.






13. Any natural concentration of a valuable material in the Earth's crust & whether that material can be extracted profitably or not.






14. A collection of maps.






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






16. The sudden fall of one or more large pieces of a rock from a cliff.






17. 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.






18. Containing moisture.






19. The theory of Plate Tectonics states that the Earth's crust is fragmented into a dozen or more large and small pieces floating on a semi-molten mantle.






20. A volcano in the shape of a flattened cone & broad and low & built by very fluid flows of basaltic lava.






21. A collection of maps.






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






23. An era of geologic time lasting from 570 to 245 million years ago.






24. A worldwide change in sea level & such as caused by melting glaciers.






25. An area of land that delivers runoff water & sediment & and dissolved substances to surface water bodies & such as rivers or lakes. All watersheds consist of boundaries & a basin and collection areas.






26. Soil conditions prevailing in area whose mean annual temperature is 0o C.






27. A naturally occurring inorganic solid that has a well-defined chemical composition and in which atoms are arranged in an ordered fashion.






28. A ball of ice and dust & whose orbit is a long & narrow ellipse.






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






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






31. Till deposited from main body of glacier during ablation.






32. To preserve & or to avoid wasteful use.






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






34. The reserves of a valuable mineral commodity plus all other mineral deposits that may eventually become available & even those that are presumed to exist but have not yet been discovered and those that are not economically or technologically exploita






35. The study of earthquakes & and of the structure of the Earth by both natural and artificially generated seismic waves.






36. A volcano in the shape of a flattened cone & broad and low & built by very fluid flows of basaltic lava.






37. The process of mountain building.






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






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






40. A lake of lava & usually basaltic & in a volcanic caldera.






41. The peak flow of water that tops the banks of a stream channel.






42. A volcano that is composed of alternating layers of lava and pyroclastic material & along with abundant dikes and sills. Viscous & intermediate lava may flow from a central vent. Example: Mt. Fuji in Japan.






43. A blanket of wind-driven sand with an upper surface about a meter above ground level.






44. Either the northern or southern half of the Earth as divided by the equator & or the eastern or western half as divided by a meridian.






45. No identifiable layers of minerals in a rock sample






46. 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.






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






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






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






50. The closest star to Earth besides the sun. It is approximately 4 light years away.