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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. Named after the Roman god of the sea. It is the eighth planet from the Sun.






2. The speed at which water flows.






3. The explosion of a dying giant or supergiant star.






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






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






6. 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






7. A process of land degradation initiated by human activity & particularly in the zones along the margins of deserts.






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






9. A measure of acidity.






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






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






12. A zone in the Earth between 400 and 670 km below the surface separating the upper mantle from the lower mantle.






13. To preserve & or to avoid wasteful use.






14. A person who makes maps.






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






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






17. The tectonic region in which two plates meet.






18. A curved belt of volcanic islands lying above a subduction zone.






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






20. Geologic time expressed in years before the present.






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






22. A Hawaiian term for a basaltic lava flow with a smooth & or ropy surface.






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






24. The elevation at which snow persists throughout the year.






25. Containing moisture.






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






27. An individual grain or constituent of a rock.






28. An astronomical instrument for measuring angles & primarily altitude of celestial bodies to determine latitude.






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






30. Living on land.






31. One of several rock-forming minerals that contain at least 95% silica (quartz). and usually one or more other common elements.






32. A narrow strip of land that has water on either side and connects two larger bodies of water.






33. 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.






34. The surface between the zone of saturation and the zone of aeration.






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






36. Turbulent stream water flow down a steep gradient & but not as steep as in a waterfall.






37. An instrument that detects & magnifies & and records vibrations of the Earth & especially earthquakes.






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






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






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






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






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 level of light that penetrates through water.






44. 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.






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






46. The green pigment in the cells of many plants that enables them to use sunlight to convert carbon dioxide and water into carbohydrates in the process called photosynthesis.






47. Banks of sand and silt along stream bank built by deposition in small increments during successive floods.






48. A system that uses a constellation of 24 satellites & their ground stations & and individual GPS receivers to accurately locate points on Earth.






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






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







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