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






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






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






4. A method of sediment transport in which the turbulence of a fluid is able to keep particles supported in the fluid.






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






6. Swamp that forms in the low lying flood plain behind a levee.






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






8. The galaxy where Earth is located.






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






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






11. Synonym of intrusive. Antonym of volcanic. Applies to igneous rocks formed beneath the surface of the Earth; typically with large crystals due to the slowness of cooling.






12. The area immediately below the ground surface within which pore spaces are partially filled with water and partially filled with air.






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






14. Banks of sand and silt along stream bank built by deposition in small increments during successive floods.






15. The average weather conditions of an area over many years & as measured by temperature & wind speed & and precipitation.






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






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






18. Deposition of fine mineral particles (silt) on the beds of streams or lakes.






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






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






21. The part of the crust that directly underlies the continents and continental shelves. Averages about 35 km in thickness & but may be over 70 km thick under largest mountain ranges.






22. A waterway from open ocean into a lagoon.






23. The environment where a particular plant or animal is normally found.






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






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






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






27. 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.






28. The remains of an extremely massive star pulled into a small volume by the force of gravity.






29. A commonly used scale of earthquake intensity.






30. The persistence of wind-formed waves after wind ceases.






31. The outermost layer of the Earth & varying in thickness from about 10 kilometers (6 miles) below the oceans & to 65 kilometers (about 40 miles) below the continents; represents less than 1 percent of the Earth's volume.






32. The science that deals with the study of the planet Earth--the materials of which it is made & the processes that act to change these materials from one form to another & and the history recorded by these materials; the forces acting to deform the ou






33. A process by which salts accumulate in soil.






34. A system that uses a constellation of 24 satellites & their ground stations & and individual GPS receivers to accurately locate points on Earth.






35. A famous scientist who proposed that the Sun was the center of the solar system not the Earth. (Heliocentrism)






36. A slide involving a downward and usually sudden movement of newly detached segments of bedrock sliding or slipping over an inclined surface of weakness such as a bedding plane & fault plane & or joint surface.






37. A cavity in a lava & formed by the entrapment of a gas bubble during solidification of the lava.






38. 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.






39. The environment where a particular plant or animal is normally found.






40. Water beneath the Earth's surface.






41. A flood that rises and falls very rapidly.






42. Lava extruded beneath water characterized by pillow shapes.






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






44. A cyclical pattern of movement in a fluid body such as the ocean & the atmosphere & or the Earth's mantle & driven by density variations which in turn are the result of differences in temperature from one part of the fluid to another.






45. Imaginary lines on a map or globe that measure distance in degrees north or south of the equator. Latitude lines extend horizontally & from east to west on a globe.






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






47. The average weather conditions of an area over many years & as measured by temperature & wind speed & and precipitation.






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






49. Swamp that forms in the low lying flood plain behind a levee.






50. The area immediately below the ground surface within which pore spaces are partially filled with water and partially filled with air.