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. An astronomical instrument for measuring angles & primarily altitude of celestial bodies to determine latitude.






2. Saturn is named after the Roman god of the harvest. It is the sixth planet from the Sun.






3. Water beneath the Earth's surface.






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






5. A broad & mound-like mass of glacier ice that usually spreads radially outward from a central zone.






6. Shapes & like mountains or hills that make up the Earth's surface.






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






8. An accumulation of wind driven sand into a distinctive shape.






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






10. The concept of a sequence of events involving the formation & alteration & destruction and reformation of rocks as a result of geologic processes.






11. One of several rock-forming minerals that contain at least 95% silica (quartz). and usually one or more other common elements.






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






13. Where two plates collide to form mountains.






14. The primary division of geologic time which are & from oldest to youngest & the Hadean & Archean & Proterozoic & and Phanerozoic eons.






15. A person who makes maps.






16. An eruption of lava that takes place from a fracture & usually without producing a cone.






17. 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.






18. Temporary accumulations of sediments that collect between low and high water marks.






19. Fossils formed when water containing minerals leaks into a mold. The minerals harden to form a copy of the original structure or organism.






20. A conical volcano formed by the accumulation of pyroclastic debris around a vent.






21. A stone or boulder & glacially transported from place of origin and left in an area of different bedrock composition.






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






23. That part of the continental margin that lies between the continental shelf and the continental rise. Slope relatively steep & 3o - 6o. The continental slope is underlain by crustal rocks of the continent.






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






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






26. The Earth's crust underlying the ocean basins which is formed at mid-oceanic ridges. It is typically 5 to 10 kilometers thick composed of basalt.






27. 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.






28. Geologic time expressed in years before the present.






29. 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.






30. The process by which ocean floors spread laterally from crests of main ocean ridges. As material moves laterally from the ridge & new material replaces it along the ridge crest by welling upward from the mantle.






31. An icicle-shaped accumulation of dripstone hanging from cave roof.






32. The surface between the zone of saturation and the zone of aeration.






33. A zone in the Earth between 400 and 670 km below the surface separating the upper mantle from the lower mantle.






34. A small & dust-bearing whirlwind.






35. A sedimentary rock composed primarily of biogenic sediments.






36. The concept of a sequence of events involving the formation & alteration & destruction and reformation of rocks as a result of geologic processes.






37. That part of the continental margin that lies between the continental shelf and the continental rise. Slope relatively steep & 3o - 6o. The continental slope is underlain by crustal rocks of the continent.






38. A famous scientist who proposed that the Sun was the center of the solar system not the Earth. (Heliocentrism)






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






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






41. The reflection of light on a given mineral's surface & classified by intensity and quality.






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






43. The two days of the year on which neither hemisphere is tilted toward or away from the sun.






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






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






46. A coral reef attached directly to the mainland.






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






48. An aggregate of one or more minerals in varying proportions.






49. Lies half way between the north and south magnetic poles.






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