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 volcano in the shape of a flattened cone & broad and low & built by very fluid flows of basaltic lava.






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






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






4. Till deposited from main body of glacier during ablation.






5. The process by which ocean floors spread laterally from crests of main ocean ridges. As material moves laterally from the ridge & new material replaces it along the ridge crest by welling upward from the mantle.






6. Lava extruded beneath water characterized by pillow shapes.






7. (Latin- Sol & Greek- Helios)the closest star to Earth. It is a giant ball of gas without any solid surface.






8. The areas of & in & or constituting a city.






9. 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.






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






11. A steep or vertical cliff & either above or below sea level.






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






13. Heat transport by moving particles & and the thermal energy that they carry & to a new location.






14. Surficial mining & in which the valuable rock is exposed by removal of overlying rock or soil.






15. Mercury is named after the Roman messenger of the gods. It is the closest to the Sun.






16. Any place where bedrock is visible on the surface of the Earth.






17. Mountains & characterized by extensive folding and thrust faulting & that form at convergent plate boundaries on continents.






18. A deposit of partly decayed plant remains in a very wet environment; marsh or swamp deposit of plant remains containing more than 50 percent carbon.






19. Pertaining to or composed of granite & a coarse-grained igneous rock dominated by light-colored minerals & consisting of about 50 percent orthoclase & 25 percent quartz & and balance of feldspars and ferromagnesian silicates. Granite is commonly foun






20. 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.






21. Similar to a groin but built to keep sand out of a harbor entrance.






22. An abandoned meander .






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






24. A device containing a free-swinging magnetic needle that is attracted to Earth's magnetic North Pole. Used to determine direction of travel.






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






26. A process by which salts accumulate in soil.






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






28. A low & nearly flat accumulation of sediment deposited at the mouth of a river or stream & commonly triangular or fan-shaped.






29. A narrow & steep-walled depression in the ocean floor & much deeper than the adjacent ocean and associated with a subduction zone.






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






31. The breaking away of ice from the front of the glacier when it ends in a lake or an ocean. Produces icebergs.






32. The straightening and/or deepening of a river channel.






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






34. A narrow & steep-walled depression in the ocean floor & much deeper than the adjacent ocean and associated with a subduction zone.






35. A thick layer of soil.






36. A community of plants and/or animals and its physical environment & regarded as a unit.






37. Lacking in rainfall & very dry.






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






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






40. 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.






41. A system involving continuous interaction of the solid Earth & the atmosphere & the oceans and living things.






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






43. The process by which ocean floors spread laterally from crests of main ocean ridges. As material moves laterally from the ridge & new material replaces it along the ridge crest by welling upward from the mantle.






44. A measure of the strength of an earthquake based on the amount of movement recorded by a seismograph . compare Richter scale.






45. The amount of material a stream carries in suspension.






46. A building that contains one or more telescopes.






47. The surface between the zone of saturation and the zone of aeration.






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






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






50. 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.