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 galaxy where Earth is located.






2. Pertaining to clastic material formed by volcanic explosion or aerial expulsion from a volcanic vent.






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






4. A flat & dry plain covered with short grass.






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






6. The solid innermost part of the core with a diameter of a little over 1 &200 km.






7. The process of removing metal from ore.






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






9. A substance that produces negatively charged hydroxide ions ( OH- ) in water and reacts with acids to form salts.






10. No identifiable layers of minerals in a rock sample






11. A post of dripstone growing up from a cave floor.






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






13. To change back and forth uncertainly.






14. Imaginary lines on a map or globe that measure distance in degrees east or west of the prime meridian. Longitude lines extend vertically & from pole to pole on a globe.






15. A flood that rises and falls very rapidly.






16. (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.






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






18. Jupiter is named after the Roman king of the gods. It is the fifth planet from the Sun.






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






20. The transformation of a soil from a solid to a liquid state as the result of increased pore pressure.






21. The way in which a rock or mineral breaks in random patterns rather than cleaving






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






23. A ridge of high water associated with a hurricane and which floods over the shore .






24. A geometrical form taken by a mineral & giving external expression to orderly internal atomic arrangement.






25. A pillar formed as a stalactite and stalagmite meet.






26. Any object that revolves around another object in space.






27. The geologic eon lying between the Archean and Phanerozoic eons & beginning about 2.5 billion years ago and ending about 0.57 billion years ago.






28. A flood that rises and falls very rapidly.






29. A type of thermal spring which ejects water intermittently with considerable force.






30. A seismic body wave that involves particle motion & alternating compression and expansion & in the direction of wave propagation. It is the fastest seismic wave. compare S-wave .






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






32. The relationship between distances in the area being mapped and distances in the map itself.






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






34. 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.






35. A waste material that contaminates air & water & or soil.






36. A person who makes maps.






37. A vent on the seafloor from which hydrothermal fluids are emitted. Upon mixing with seawater and cooling & the fluids precipitate a cloud of fine-grained sulfide minerals that resembles a cloud of black smoke.






38. The height of a place above sea level.






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






40. To preserve & or to avoid wasteful use.






41. No identifiable layers of minerals in a rock sample






42. The elevation at which snow persists throughout the year.






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






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






45. Molten rock & containing dissolved gases and suspended solid particles. At the Earth's surface & magma is known as lava.






46. The oldest eon in Earth history & extending from the origin of the Earth to about 3.9 billion years ago.






47. The process by which a binding & or cementing & agent is precipitated in spaces among individual particles of a deposit. Common cementing agents are calcite & quartz & and dolomite.






48. 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.






49. An atmospheric shield providing the Earth with protection from ultra-violet rays which can cause sun burn & skin cancer and the destruction of the delicate plant life which supports the planet's food chain.






50. An era of time during the Phanerozoic eon lasting from 245 million years ago to 66.4 million ago.