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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. A plate boundary in which plates on opposite sides of the boundary move past each other in opposite directions. The San Andreas fault of California is a good example.






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






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






4. A statement of relative age in layered rocks: In a series of sedimentary rocks that has not been overturned & the topmost layer is always the youngest and the bottommost layer is always the oldest.






5. A fracture or zone of fractures along the boundaries of tectonic plates where movement has taken place.






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






7. Molten rock & containing dissolved gases and suspended solid particles. At the Earth's surface & magma is known as lava.






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






9. The precipitation that runs directly off the surface to stream or body of standing water.






10. A post of dripstone growing up from a cave floor.






11. A pillar formed as a stalactite and stalagmite meet.






12. A group of stars that appear to make a pattern in the sky. The Big Dipper is a constellation.






13. 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.






14. A detailed mathematical description of the cause-and-effect relationships between events that can be used to predict or explain other such events.






15. Lava extruded beneath water characterized by pillow shapes.






16. A study designed to collect critical data to be used for comparison or as a control in a later study.






17. Either the northern or southern half of the Earth as divided by the equator & or the eastern or western half as divided by a meridian.






18. 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.






19. The seaward edge of coast between low tide and effective wave action.






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






21. Enormous & thick sheets of rock that are part of the Earth's upper mantle that move and adjoin each other along zones of seismic activity. Many tectonic plates extend underneath both continents and sea floor.






22. Materials that are found in nature that are useful or necessary for people to live.






23. A sea wave produced by any large-scale & short duration disturbance on the seafloor & commonly a shallow submarine earthquake but possibly also a submarine slide or volcanic eruption.






24. A Hawaiian term for a lava flow that has a rough & jagged surface.






25. A rock that has crystallized from a molten state.






26. All unconsolidated materials above bedrock. Natural earthy materials on the Earth's surface & in places modified or even made by human activity & containing living matter & and supporting or capable of supporting plants out of doors.






27. A protective wall built offshore and usually parallel to the shore.






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






29. The top of a wave.






30. 1. A low & bowl-shaped area of land surrounded by higher lands. 2. any large depression in which sediments are deposited.






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






32. 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.






33. A slide involving a downward and usually sudden movement of newly detached segments of bedrock sliding or slipping over an inclined surface of weakness such as a bedding plane & fault plane & or joint surface.






34. A soft compact calcite & CaCO3 & with varying amounts of silica & quartz & feldspar & or other mineral impurities & generally gray-white or yellow-white and derived chiefly from fossil seashells.






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






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






37. A natural open space underground & large enough for a person to enter. Most commonly occur by the dissolution of soluble rocks & generally limestone.






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






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






40. A reverse fault on which the dip angle of the fault plane is 15 degrees or less.






41. 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.






42. A rock that has crystallized from a molten state.






43. A narrow & elongate region in which one lithospheric plate descends relative to another.






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






45. 1. A low & bowl-shaped area of land surrounded by higher lands. 2. any large depression in which sediments are deposited.






46. An artificial hill formed by the debris of successive human settlements.






47. 1. Breach in a natural levee . 2. Deep crevice or open fracture in glacier ice.






48. Objects revolving around the sun that are too small and too numerous to be considered planets.






49. The line that separates one drainage basin from another.






50. Surficial mining & in which the valuable rock is exposed by removal of overlying rock or soil.






Can you answer 50 questions in 15 minutes?



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