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. 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.






2. A region of high heat flow on the Earth's surface & thought to lie above a mantle plume .






3. The study of earthquakes & and of the structure of the Earth by both natural and artificially generated seismic waves.






4. Ratio between weight of given volume of material and weight of equal volume of pure water.






5. The accumulation of material in layers or beds.






6. The two days of the year on which the noon sun is directly overhead at either 23.5






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






8. A mudflow composed chiefly of pyroclastic material on the flanks of a volcano.






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






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






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






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






13. The rigid outer shell of the Earth. It includes the crust and uppermost mantle and is on the order of 100 km in thickness.






14. He area from which a stream and its tributaries receives its water.






15. The chronological sequence of units of Earth time.






16. The line formed by the intersection of the axial plane of a fold with a bedding plane & marking where the bed shows its maximum curvature.






17. Imaginary lines on a map or globe that measure distance in degrees north or south of the equator. Latitude lines extend horizontally & from east to west on a globe.






18. 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.






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






20. To wash or scrub away.






21. Similar to a groin but built to keep sand out of a harbor entrance.






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






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






24. The presence of layers in some rocks caused by parallel alignment of minerals.






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






26. Geologic time expressed in years before the present.






27. 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.






28. A commonly used scale of earthquake intensity.






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






30. 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.






31. A famous scientist who proposed that the Sun was the center of the solar system not the Earth. (Heliocentrism)






32. Temporary accumulations of sediments that collect between low and high water marks.






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






34. A person who makes maps.






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






36. A valley carved by glacier erosion and whose cross-valley profile has steep sides and a nearly flat floor & suggestive of a large letter 'you'.






37. The very small particles of dirt & soot & and other pollutants that are present in the air.






38. The distance between two successive wave crests or troughs.






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






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






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






42. A person who makes maps.






43. Extending across a continent.






44. (Latin- Sol & Greek- Helios)the closest star to Earth. It is a giant ball of gas without any solid surface.






45. The process of mountain building.






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






47. The Earth's crust underlying the ocean basins which is formed at mid-oceanic ridges. It is typically 5 to 10 kilometers thick composed of basalt.






48. A rock changed from its original form and/or composition by heat & pressure &shearing stress & or chemically active fluids & or some combination of them.






49. The Earth's crust underlying the ocean basins which is formed at mid-oceanic ridges. It is typically 5 to 10 kilometers thick composed of basalt.






50. The great circle on the Earth's surface passing through The North and South Poles & which is considered 0 degrees longitude. The prime meridian passes through Greenwich & England & and is used as a reference point for measuring longitude east and w