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






2. 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.






3. Extending across a continent.






4. Woodland that usually gets at least 100 inches of rain each year.






5. A sedimentary rock composed primarily of biogenic sediments.






6. A mudflow composed chiefly of pyroclastic material on the flanks of a volcano.






7. The internal resistance to flow in a liquid.






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






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






10. The distance light travels through a vacuum in one year.






11. The first scientist to make systematic use of the telescope in looking at the heavens.






12. Deposits of wind-borne dust.






13. Either the northern or southern half of the Earth as divided by the equator & or the eastern or western half as divided by a meridian.






14. A landscape that develops from the action of ground water in areas of easily soluble rocks. It is usually characterized by caves & underground drainage and sinkholes.






15. Living in water.






16. 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.






17. The very small particles of dirt & soot & and other pollutants that are present in the air.






18. 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.






19. No identifiable layers of minerals in a rock sample






20. A detailed mathematical description of the cause-and-effect relationships between events that can be used to predict or explain other such events.






21. A building that contains one or more telescopes.






22. All of space and everything in it.






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






24. A collection of maps.






25. A waterway from open ocean into a lagoon.






26. Lava extruded beneath water characterized by pillow shapes.






27. A process of erosion in which wind carries off particles of dust and sand.






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






29. The condition of equilibrium & comparable to floating & of units of the lithosphere above the asthenosphere.






30. A ball of ice and dust & whose orbit is a long & narrow ellipse.






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






32. To preserve & or to avoid wasteful use.






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






34. The process of one plate descending beneath another.






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






36. A substance that produces positively charged hydrogen ions (H+) when dissolved in water.






37. The uprush of a wave onto the beach followed by the return flow of the water down the beach slope in the intervals between waves.






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






39. 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.






40. A molecule composed of three atoms of oxygen and mostly found in the stratosphere. Though beneficial in the upper atmosphere & at ground level & ozone is called photochemical smog & and is a respiratory irritant and considered a pollutant.






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






42. Living in water.






43. The top of a wave.






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






45. That portion of the resources for a valuable mineral commodity that can be extracted from the Earth at a profit today.






46. Flat land covered with tall grass and wildflowers.






47. A narrow strip of land along the margin of the ocean extending inland for a variable distance from low water mark.






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






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






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