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 environment where a particular plant or animal is normally found.






2. That portion of the Earth below the crust and reaching to about 2 &780 km & where a transition zone of about 100 km thickness separates it from the core.






3. Iron & aluminum & magnesium & manganese & and titanium. Ores of the abundant metals only need to be 3 - 5 times as metal-rich as average rock.






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






5. The arrangement of rock units in the proper chronological order from youngest to oldest.






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






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






8. Verifying assessments made from satellite data by doing direct & 'on-the ground' measurements.






9. An aggregate of one or more minerals in varying proportions.






10. 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.






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






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






13. 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.






14. A river that is able to maintain its flow through a desert because of water received from outside the desert.






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






16. Water beneath the Earth's surface.






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






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






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






20. Reduction of pore space between individual particles as the result of overlying sediments or of tectonic movements.






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






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






23. The formation & advance and retreat of glaciers and the results of these activities.






24. The low spot between two successive waves.






25. A waterway from open ocean into a lagoon.






26. A small ice sheet.






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






28. Lacking in rainfall & very dry.






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






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






31. A large area with common features that set it apart from other areas.






32. Mercury is named after the Roman messenger of the gods. It is the closest to the Sun.






33. To change back and forth uncertainly.






34. A steep-sided rounded extrusion of highly viscous lava squeezed out from a volcano and forming a dome-shaped or bulbous mass above and around the volcanic vent. The structure generally develops inside a volcanic crater.






35. An imaginary circle around the earth that represents the halfway mark between the North and South Poles and establishes the boundary between the Northern and Southern Hemispheres.






36. A mass of ice & formed by the recrystallization of snow & that flows forward & or has flowed at some time in the past.






37. 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.






38. A large & basin-shaped volcanic depression & more or less circular in form. Typically steep-sided & found at the summit of a shield volcano.






39. A molecule composed of three atoms of oxygen and mostly found in the stratosphere. Though beneficial in the upper atmosphere & at ground level & ozone is called photochemical smog & and is a respiratory irritant and considered a pollutant.






40. A waste material that contaminates air & water & or soil.






41. A large area with common features that set it apart from other areas.






42. 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.






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






44. The areas of & in & or constituting a city.






45. 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






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






47. The primary division of geologic time which are & from oldest to youngest & the Hadean & Archean & Proterozoic & and Phanerozoic eons.






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






49. Pertaining to clastic material formed by volcanic explosion or aerial expulsion from a volcanic vent.






50. The tectonic region in which two plates meet.