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






2. He area from which a stream and its tributaries receives its water.






3. The zones of seismic activity long which plates are in contact.






4. Any porous and permeable rock that yields oil or natural gas.






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






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






7. The weak or 'soft' zone in the upper mantle just below the lithosphere & involved in plate movement and isostatic adjustments. It lies 70 to 100 km below the surface and may extend to a depth of 400 km.






8. A building that contains one or more telescopes.






9. A sharp bend & loop or turn in a stream's course. When abandoned & it is called a meander scar or an oxbow.






10. The accumulation of material in layers or beds.






11. A volcanic mountain on the seafloor. If flat-topped & it is a guyot.






12. The uprush of a wave onto the beach followed by the return flow of the water down the beach slope in the intervals between waves.






13. A permeable region of rock or soil through which ground water can move.






14. A commonly used measure of earthquake magnitude & based on a logarithmic scale. Each integral step on the scale represents a tenfold increase in the extent of ground shaking & as recorded on a seismograph.






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






16. The effect of water and carbon dioxide absorbing outgoing infrared radiation & raising a system's temperature. The term is generally used with reference to the Earth's temperature & although it can also be applied to other systems & such as greenhous






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






18. A thick layer of soil.






19. Any porous and permeable rock that yields oil or natural gas.






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






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






22. Uranus is named after the Roman god of the sky. It is the seventh planet from the Sun.






23. The closest galaxy to the Milky way. It is approximately 2 million light-years away.






24. The processes (mechanical and chemical) responsible for the wearing away & loosening & and dissolving of materials of the Earth's crust.






25. A measure of the size of an earthquake in terms of the damage it causes.






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






27. The point on the Earth's surface where a magnetic needle points vertically downward (north magnetic pole) or vertically upward (south magnetic pole).






28. A downward distortion or dimple in the water table that forms as a well pumps water faster than it can flow through the aquifer.






29. Weathering processes that are the result of chemical reactions. Example: the transformation of orthoclase to kaolinite.






30. Large area of extremely flat ocean floor lying near a continent and generally over 4 km in depth.






31. A planetary satellite.






32. An eruption of lava that takes place from a fracture & usually without producing a cone.






33. The accumulation of material in layers or beds.






34. Long narrow beaches separated in many places from the mainland by lagoons.






35. The production of living matter by organisms that make food using sunlight or chemicals. Usually expressed as grams of carbon per square meter per year.






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






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






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






39. The reflection of light on a given mineral's surface & classified by intensity and quality.






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






41. The study of earthquakes & and of the structure of the Earth by both natural and artificially generated seismic waves.






42. A supercontinent that existed from the the end of the Permian to the Jurassic & 300 to 200 million years ago & assembled from large continents like Euramerica & Gondwana & and Siberia & as well as smaller landmasses like the Cathaysian and Cimmerian






43. The attractive force between two objects; its magnitude depends on their masses and the distance between them.






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






45. Extending across a continent.






46. 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.






47. Any molten material that is extrusive or volcanic & or the rock that forms from a molten extrusive. Molten rock that flows at the Earth's surface.






48. A glaciated valley now flooded by the sea.






49. 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.






50. 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.