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. Property possessed by certain rocks of breaking with relative ease along parallel planes or nearly parallel surfaces in their crystal structures where the bonds are weakest.






2. Applies to igneous rocks that cool on the surface of the Earth & including beneath water; typically with small crystals due to the rapidity of cooling. Synonym of extrusive. Antonym of plutonic.






3. A narrow & steep-walled depression in the ocean floor & much deeper than the adjacent ocean and associated with a subduction zone.






4. An instrument that merely indicates the occurrence of an earthquake.






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






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






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






8. Any of various minerals prized for beauty & durability & and rarity. A few noncrystalline materials of organic origin (e.g. & pearl & red coral & and amber) also are classified as gemstones.






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






10. A glaciated valley now flooded by the sea.






11. A mound or ridge of sediment deposited by a glacier.






12. Glacial deposits laid down directly by glaciers or laid down in lakes & ocean & or streams as result of glacial activity.






13. Water that flows across watersheds during and immediately after severe rainstorms. In populated areas & stormwater runoff is often water that cannot be handled by existing sewer systems. Stormwater runoff is the leading source of water pollution in t






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






15. The closest star to Earth besides the sun. It is approximately 4 light years away.






16. To change back and forth uncertainly.






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






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






19. 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






20. The dust-sized & sharp-edged & glassy particles resulting from an explosive volcanic eruption.






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






22. The level of light that penetrates through water.






23. 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






24. As applied to glacier ice & the process by which ice below the snow line is wasted by evaporation and melting.






25. The process by which an unconsolidated deposit of sediments is converted in to solid rock.






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






27. The level of light that penetrates through water.






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






29. 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.






30. The perpendicular or very steep descent of a stream.






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






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






33. Plutonic. Antonym of extrusive. Pertaining to igneous rocks or features formed by the emplacement of magma in pre-existing rocks.






34. The chronological sequence of units of Earth time.






35. A device built to study distant objects by making them appear closer.






36. Containing moisture.






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






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






39. To preserve & or to avoid wasteful use.






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






41. The distance light travels through a vacuum in one year.






42. Destruction of the ozone layer caused by the release of CFC's (chlorofluorocarbons) into the atmosphere which react chemically with ozone and break it down into different gases.






43. A planetary satellite.






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






45. The mass of an object divided by its volume.






46. Igneous. Antonym of intrusive. Synonym of volcanic. Pertaining to igneous rocks or features formed from lava released on the Earth's surface.






47. A coral reef attached directly to the mainland.






48. Heat transport by direct transfer of energy from one particle to another & without moving the particle to a new location.






49. 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.






50. Living on land.