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 device built to study distant objects by making them appear closer.






2. Elongated rises on the ocean floor where basalt periodically erupts & forming new oceanic crust.






3. An earthquake that follows and has its epicenter near a larger earthquake.






4. A coral reef separated from the mainland by a lagoon.






5. The rock beneath the soil.






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






7. A sedimentary rock made up of chemical sediments. Example: rock salt.






8. Destruction of the ozone layer caused by the release of CFC's (chlorofluorocarbons) into the atmosphere which react chemically with ozone and break it down into different gases.






9. Any molten material that is extrusive or volcanic & or the rock that forms from a molten extrusive. Molten rock that flows at the Earth's surface.






10. A vent in the surface of the Earth & from which lava & ash & and gases erupt.






11. An individual grain or constituent of a rock.






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






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






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






15. The color of a mineral in its powdered form obtained from scraping a sample on a ceramic plate






16. A term applied to large areas of basaltic lava presumably extruded from fissures.






17. To preserve & or to avoid wasteful use.






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






19. Bent rock strata.






20. A supercontinent that existed from the the end of the Permian to the Jurassic & 300 to 200 million years ago & assembled from large continents like Euramerica & Gondwana & and Siberia & as well as smaller landmasses like the Cathaysian and Cimmerian






21. A coral reef attached directly to the mainland.






22. Where two plates collide to form mountains.






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






24. The top of a wave.






25. An imaginary circle around the earth that represents the halfway mark between the North and South Poles and establishes the boundary between the Northern and Southern Hemispheres.






26. A process by which salts accumulate in soil.






27. Any of various minerals prized for beauty & durability & and rarity. A few noncrystalline materials of organic origin (e.g. & pearl & red coral & and amber) also are classified as gemstones.






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






29. A broad & deep & generally straight furrow carved in bed rock by the abrasive action of debris embedded in a moving glacier. Larger and deeper than a glacial striation.






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






31. A volcanic mountain on the seafloor. If flat-topped & it is a guyot.






32. A continuous well-defined mass of material of sufficient ore content to make extraction economically feasible. compare mineral deposit.






33. A large area with common features that set it apart from other areas.






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






35. A coral reef separated from the mainland by a lagoon.






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






37. The galaxy where Earth is located.






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






39. The area bordering a stream over which water spreads when the stream tops its channel banks.






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






41. A fracture or zone of fractures along the boundaries of tectonic plates where movement has taken place.






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






43. The tectonic region in which two plates meet.






44. A major drainage divide separating the drainage to one ocean from another.






45. Deserts formed by blocking moisture-bearing winds with mountain barriers.






46. The precipitation that runs directly off the surface to stream or body of standing water.






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






48. Any seismic wave that travels through the body of Earth & rather than along its surface.






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






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