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. Any object that revolves around another object in space.






2. Named after the Roman god of the sea. It is the eighth planet from the Sun.






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






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






5. The method of locating an epicenter by determining how far it lies from three widely separated seismographs.






6. A sedimentary rock composed of combustible matter derived from the partial decomposition of plant material.






7. 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.






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






9. All of space and everything in it.






10. Large area of extremely flat ocean floor lying near a continent and generally over 4 km in depth.






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






12. Living parts of the environment that can renew or replace themselves.






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






14. Lacking in rainfall & very dry.






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






16. The green pigment in the cells of many plants that enables them to use sunlight to convert carbon dioxide and water into carbohydrates in the process called photosynthesis.






17. 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.






18. A rock that has crystallized from a molten state.






19. A river that is able to maintain its flow through a desert because of water received from outside the desert.






20. A group of stars that appear to make a pattern in the sky. The Big Dipper is a constellation.






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






22. A sea level change due to change in load on Earth's crust.






23. The internal resistance to flow in a liquid.






24. The partial or complete blocking from view of one object by another.






25. 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.






26. The formation & advance and retreat of glaciers and the results of these activities.






27. 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.






28. A giant structure that contains hundreds of billions of stars.






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






30. A reverse fault on which the dip angle of the fault plane is 15 degrees or less.






31. A depression in the ground formed by the melting of a block of glacier ice buried or partially buried by drift.






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






33. A flood that rises and falls very rapidly.






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






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






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






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






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






39. A sedimentary rock composed primarily of biogenic sediments.






40. Rock formed from the accumulation of sediment & Which may consist of fragments and mineral grains of varying sizes from pre-existing rocks & remains or products of animals and plants & the products of chemical action & or mixtures of these.






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






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






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






44. Deposits of wind-borne dust.






45. A segment of an active fault zone that has not experienced a major earthquake during a time period when most other segments of the zone have. They are generally regarded as having a higher potential for future earthquakes.






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






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






48. (Greek-Aphrodite)named after the Roman goddess of love. It is the planet closest in size to Earth and the second planted from the Sun.






49. A planetary satellite.






50. The zones of seismic activity long which plates are in contact.