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 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.






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






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






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






5. A mudflow composed chiefly of pyroclastic material on the flanks of a volcano.






6. A vertical conduit through the Earth's crust below a volcano & through Which magma has passed.






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






8. Any accumulation of material & by settling from water or air & chemical precipitation & evaporation from solution & etc.






9. The line formed by the intersection of the axial plane of a fold with a bedding plane & marking where the bed shows its maximum curvature.






10. The vertical distance between the crest and adjacent trough of a wave.






11. 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.






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






13. Woodland that usually gets at least 100 inches of rain each year.






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






15. The first scientist to make systematic use of the telescope in looking at the heavens.






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






17. An icicle-shaped accumulation of dripstone hanging from cave roof.






18. A glaciated valley now flooded by the sea.






19. Evidence in rock of the presence of past life & such as a dinosaur bone & an ancient clam shell & or the footprint of a long-extinct animal as well as life history artifacts.






20. 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






21. No identifiable layers of minerals in a rock sample






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






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






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






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 generally dark & more or less stable part of the organic matter in a soil & so well decomposed that the original sources cannot be identified.






27. A comet that passed Earth in 1997 and won't return to the inner solar system until the year 4377.






28. The prediction that climate will warm as a result of the addition to the atmosphere of humanly produced greenhouse gases.






29. A disease-causing organism or entity & such as a bacterium or virus.






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






31. A valley carved by glacier erosion and whose cross-valley profile has steep sides and a nearly flat floor & suggestive of a large letter 'you'.






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






33. The sudden fall of one or more large pieces of a rock from a cliff.






34. An era of time during the Phanerozoic eon lasting from 245 million years ago to 66.4 million ago.






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






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






37. A lake of lava & usually basaltic & in a volcanic caldera.






38. An instrument used to measure the speed of wind.






39. The pattern of water circulation from the ocean to the atmosphere to the land and back to the ocean.






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 supercontinent that existed from the Jurassic to Early Tertiary after splitting from Pangea; composed of Laurentia & Baltica & Avalonia & (modern North America & Scandinavia & Greenland & Western and Central Europe); eventually fragmented into Eur






42. The generally dark & more or less stable part of the organic matter in a soil & so well decomposed that the original sources cannot be identified.






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






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






45. Bent rock strata.






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






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






48. Lava extruded beneath water characterized by pillow shapes.






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






50. The most recent eon of geologic time beginning 570 million years ago and continuing to the present.