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






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






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






4. An area where fresh water comes into contact with seawater & usually in a partly enclosed coastal body of water; a mix of fresh and salt water where the current of a stream meets the tides.






5. A conical volcano formed by the accumulation of pyroclastic debris around a vent.






6. The region of a shore that is covered at high tide and exposed at low tide.






7. An accumulation of wind driven sand into a distinctive shape.






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






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






10. The concept of a sequence of events involving the formation & alteration & destruction and reformation of rocks as a result of geologic processes.






11. A flood that rises and falls very rapidly.






12. Containing moisture.






13. The amount of dissolved salt in water.






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






15. A type of thermal spring which ejects water intermittently with considerable force.






16. (Greek-Aphrodite)named after the Roman goddess of love. It is the planet closest in size to Earth and the second planted from the Sun.






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






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






19. A broad & mound-like mass of glacier ice that usually spreads radially outward from a central zone.






20. A study designed to collect critical data to be used for comparison or as a control in a later study.






21. A lake in an abandoned meander.






22. A rock changed from its original form and/or composition by heat & pressure &shearing stress & or chemically active fluids & or some combination of them.






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






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






25. The initial point within the Earth that ruptures in an earthquake & directly below the epicenter. The point within the Earth which is the center of an earthquake & at which strain energy is first released and converted to elastic wave energy.






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






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






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






29. An artificial hill formed by the debris of successive human settlements.






30. The reserves of a valuable mineral commodity plus all other mineral deposits that may eventually become available & even those that are presumed to exist but have not yet been discovered and those that are not economically or technologically exploita






31. A rigid segment of the Earth's lithosphere that moves horizontally and adjoins other plates along zones of seismic activity. Plates may include portions of both continents and ocean basins.






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






33. A sedimentary rock composed of combustible matter derived from the partial decomposition of plant material.






34. The tendency of a moving object to continue in a straight line or a stationary object to remain in place.






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






36. The precipitation that runs directly off the surface to stream or body of standing water.






37. A hole or basin cut into bedrock of a stream by the abrasive action of pebbles and sand swirled by turbulent stream flow.






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






39. The top of a wave.






40. Any seismic wave that travels through the body of Earth & rather than along its surface.






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






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






43. A statement of relative age in layered rocks: In a series of sedimentary rocks that has not been overturned & the topmost layer is always the youngest and the bottommost layer is always the oldest.






44. The solid innermost part of the core with a diameter of a little over 1 &200 km.






45. A layer of sedimentary rock; plural is strata.






46. The area bordering a stream over which water spreads when the stream tops its channel banks.






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






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






49. A giant structure that contains hundreds of billions of stars.






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