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 general term for a relatively hard layer of soil at or just below the ground surface & cemented by silica & iron oxide & calcium carbonate & or organic matter.






2. Rock formed from the accumulation of sediment & Which may consist of fragments and mineral grains of varying sizes from pre-existing rocks & remains or products of animals and plants & the products of chemical action & or mixtures of these.






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






4. A chuck of rock or dust in space.






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






6. The point on the Earth's surface directly above the focus of an earthquake.






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






8. The symbol used on a map to indicate directions & both cardinal and ordinal.






9. A thick layer of soil.






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






11. Of or relating to or containing basalt & a dark & dense & extrusive rock that has a silica content of 40% to 50% and makes up most of the ocean floor.






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






13. The explosion of a dying giant or supergiant star.






14. Deep steep-sided depression in the ocean floor caused by the subduction of oceanic crust beneath either other oceanic crust or continental crust.






15. Produced as a wave steepens and falls forward as the wave nears the shore.






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






17. Saturn is named after the Roman god of the harvest. It is the sixth planet from the Sun.






18. Sediment formed by chemical precipitation from water. Example: halite precipitated as the result of the evaporation of sea water.






19. The low spot between two successive waves.






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






21. 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.






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






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






24. The method of locating an epicenter by determining how far it lies from three widely separated seismographs.






25. No identifiable layers of minerals in a rock sample






26. A lake in an abandoned meander.






27. To preserve & or to avoid wasteful use.






28. 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.






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






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






31. 1. A mass of sand & gravel & or alluvium deposited on the bed of a stream & sea & or lake & or at the mouth of a stream 2. A unit of pressure & approximately equal to atmospheric pressure at sea level.






32. 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.






33. Saturn is named after the Roman god of the harvest. It is the sixth planet from the Sun.






34. 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.






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






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






37. An eon of geologic time extending from about 3.9 billion years to 2.5 billion years ago.






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






39. The Sun with all the celestial bodies that revolve around it.






40. The portion of the continental margin that lies between the abyssal plain and the continental slope. The continental rise is underlain by crustal rocks of the ocean basin.






41. A natural open space underground & large enough for a person to enter. Most commonly occur by the dissolution of soluble rocks & generally limestone.






42. Flat land covered with tall grass and wildflowers.






43. Sediments produced directly by the life processes of plants or animals.






44. The processes of weathering by which physical actions such as frost wedging break down a rock into fragments & involving no chemical change.






45. An isolated & steep-sided & rocky mass or island just offshore from a rocky headland & usually on a shore platform.






46. 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.






47. A sea level change due to change in load on Earth's crust.






48. The rigid outer shell of the Earth. It includes the crust and uppermost mantle and is on the order of 100 km in thickness.






49. A Hawaiian term for a lava flow that has a rough & jagged surface.






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