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






2. Gases (primarily water and carbon dioxide & but also a variety of sulfur and nitrogen compounds and gaseous hydrocarbons) that trap the Sun's heat in the atmosphere.






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






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






5. 1. A steep-walled & usually conical depression at the summit or on the flanks of a volcano & resulting from the explosive ejection of material from a vent. 2. A bowl-shaped depression with a raised & overturned rim produced by the impact of a meteori






6. A collection of maps.






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






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






9. Glacial drift composed of rock fragments that range from clay to boulder size and randomly arranged without bedding.






10. That part of the continental margin that lies between the continental shelf and the continental rise. Slope relatively steep & 3o - 6o. The continental slope is underlain by crustal rocks of the continent.






11. A type of thermal spring which ejects water intermittently with considerable force.






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






13. A building that contains one or more telescopes.






14. The zone below the zone of aeration in which all pore spaces are filled with water.






15. The transformation of a soil from a solid to a liquid state as the result of increased pore pressure.






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






17. A geometrical form taken by a mineral & giving external expression to orderly internal atomic arrangement.






18. A minor tremor that precedes an earthquake. An increase in seismicity may signal that a major release of strain energy is about to occur.






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






20. The rise and fall of sea level caused by the gravitational pull of the Sun and Moon on the Earth.






21. A general term for a relatively hard layer of soil at or just below the ground surface & cemented by silica & iron oxide & calcium carbonate & or organic matter.






22. Any form of water & such as rain & sleet & or snow & that falls to Earth's surface.






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






24. The process of mountain building.






25. A glaciated valley now flooded by the sea.






26. The geologic eon lying between the Archean and Phanerozoic eons & beginning about 2.5 billion years ago and ending about 0.57 billion years ago.






27. To wash or scrub away.






28. The generally dark & more or less stable part of the organic matter in a soil & so well decomposed that the original sources cannot be identified.






29. Refers to rock or sediments made up primarily of broken fragments of pre-existing rocks or minerals.






30. A process of erosion in which wind carries off particles of dust and sand.






31. An individual grain or constituent of a rock.






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






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






34. A vent in the surface of the Earth & from which lava & ash & and gases erupt.






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






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






37. A valley caused by extension of the Earth's crust. Its floor forms as a portion of the crust moves downward along normal faults.






38. Highly mafic igneous volcanic rock & typically fine-grained and dark in color; rough volcanic equivalent of gabbro. Basalt is the most abundant volcanic rock in the Earth's crust.






39. 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.






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






41. The layer of gases (air) & that surrounds a planet or moon.






42. Heat extracted from the Earth for use as an power source.






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






44. A volcano in the shape of a flattened cone & broad and low & built by very fluid flows of basaltic lava.






45. A delta formed at both sides of a tidal inlet.






46. 1. A mass of sand & gravel & or alluvium deposited on the bed of a stream & sea & or lake & or at the mouth of a stream 2. A unit of pressure & approximately equal to atmospheric pressure at sea level.






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






48. To wash or scrub away.






49. The low spot between two successive waves.






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