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






2. A narrow & elongate region in which one lithospheric plate descends relative to another.






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






4. Where two plates collide to form mountains.






5. Forms along a coast as wave erosion cuts through a headland.






6. A sea wave produced by any large-scale & short duration disturbance on the seafloor & commonly a shallow submarine earthquake but possibly also a submarine slide or volcanic eruption.






7. The process of mountain building.






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






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






10. The arrangement of rock units in the proper chronological order from youngest to oldest.






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






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






13. In a stream & the volume of water passing through a channel in a given time.






14. The chronological sequence of units of Earth time.






15. An instrument that detects & magnifies & and records vibrations of the Earth & especially earthquakes.






16. Turbulent stream water flow down a steep gradient & but not as steep as in a waterfall.






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






18. Shapes & like mountains or hills that make up the Earth's surface.






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






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






21. 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.






22. A seismic body wave that involves particle motion from side to side & perpendicular to the direction of wave propagation. S-waves are slower than P-waves and cannot travel through a liquid.






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






24. All unconsolidated materials above bedrock. Natural earthy materials on the Earth's surface & in places modified or even made by human activity & containing living matter & and supporting or capable of supporting plants out of doors.






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






26. A small & dust-bearing whirlwind.






27. The current geologic era & which began 66.4 million years ago and continues to the present.






28. The closest star to Earth besides the sun. It is approximately 4 light years away.






29. The processes (mechanical and chemical) responsible for the wearing away & loosening & and dissolving of materials of the Earth's crust.






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






31. Scratches & or small channels & gouged by glacier action. Occur on boulders & pebbles & and bedrock. Striations along bedrock indicate direction of ice movement.






32. The amount of dissolved salt in water.






33. The weak or 'soft' zone in the upper mantle just below the lithosphere & involved in plate movement and isostatic adjustments. It lies 70 to 100 km below the surface and may extend to a depth of 400 km.






34. An ingredient in a food or other substance that nourishes or promotes growth.






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






36. An informal term to include all geologic time from the beginning of the Earth to the beginning of the Cambrian period 570 million years ago.






37. A region of high heat flow on the Earth's surface & thought to lie above a mantle plume .






38. Extending across a continent.






39. Glacial deposits laid down directly by glaciers or laid down in lakes & ocean & or streams as result of glacial activity.






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






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






42. Distance over which wave-forming winds blow.






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






44. The seaward edge of coast between low tide and effective wave action.






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






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






47. 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.






48. A person who makes maps.






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






50. A worldwide change in sea level & such as caused by melting glaciers.