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






2. 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.






3. A mound or ridge of sediment deposited by a glacier.






4. A rock changed from its original form and/or composition by heat & pressure &shearing stress & or chemically active fluids & or some combination of them.






5. The zone below the zone of aeration in which all pore spaces are filled with water.






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






7. Pluto is named after the Roman god of the Underworld. No longer considered a planet.






8. The portion of the continental margin that extends as a gently sloping surface from the shoreline seaward to a marked change in slope at the top of the continental slope . Seaward depth averages about 130 m.






9. The outermost part of the core. It is liquid & about 1 &700 km thick & and separated from the inner & solid core by a transition zone about 565 km thick.






10. Any solid material that has settled out of a state of suspension in liquid.






11. 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.






12. Verifying assessments made from satellite data by doing direct & 'on-the ground' measurements.






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






14. In the geologic time scale a unit of time less than an era and greater than an epoch. Example: The Tertiary period was the earliest period in the Cenozoic era and included & among others & the Eocene epoch.






15. The low spot between two successive waves.






16. The very slow & generally continuous downslope movement of soil and debris under the influence of gravity.






17. The internal resistance to flow in a liquid.






18. 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






19. A commonly used scale of earthquake intensity.






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






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






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






23. The production of living matter by organisms that make food using sunlight or chemicals. Usually expressed as grams of carbon per square meter per year.






24. Flat land covered with tall grass and wildflowers.






25. To change back and forth uncertainly.






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






27. To wash or scrub away.






28. The point on the Earth's surface where a magnetic needle points vertically downward (north magnetic pole) or vertically upward (south magnetic pole).






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






30. Highly mafic igneous volcanic rock & typically fine-grained and dark in color; rough volcanic equivalent of gabbro. Basalt is the most abundant volcanic rock in the Earth's crust.






31. To preserve & or to avoid wasteful use.






32. The accumulation of material in layers or beds.






33. The portion of the continental margin that lies between the abyssal plain and the continental slope. The continental rise is underlain by crustal rocks of the ocean basin.






34. The line separating land and water.






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






36. 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.






37. The portion of the continental margin that lies between the abyssal plain and the continental slope. The continental rise is underlain by crustal rocks of the ocean basin.






38. The distance between two successive wave crests or troughs.






39. 1. A steep-walled & usually conical depression at the summit or on the flanks of a volcano & resulting from the explosive ejection of material from a vent. 2. A bowl-shaped depression with a raised & overturned rim produced by the impact of a meteori






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






41. The layer of gases (air) & that surrounds a planet or moon.






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






43. A rigid segment of the Earth's lithosphere that moves horizontally and adjoins other plates along zones of seismic activity. Plates may include portions of both continents and ocean basins.






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






45. A downward distortion or dimple in the water table that forms as a well pumps water faster than it can flow through the aquifer.






46. An isolated & steep-sided & rocky mass or island just offshore from a rocky headland & usually on a shore platform.






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






48. 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.






49. 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.






50. The theory that states that the present-day continents are the fragmented pieces of preexisting larger landmasses called supercontinents.