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. Pluto is named after the Roman god of the Underworld. No longer considered a planet.






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






3. Till deposited from main body of glacier during ablation.






4. A commonly used scale of earthquake intensity.






5. A small & dust-bearing whirlwind.






6. A waterway from open ocean into a lagoon.






7. 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.






8. The persistence of wind-formed waves after wind ceases.






9. The peak flow of water that tops the banks of a stream channel.






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






11. Flat land covered with tall grass and wildflowers.






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






13. A sedimentary rock composed primarily of biogenic sediments.






14. 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






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






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






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






18. (Latin- Terra & Greek- Gaia) Earth is named after the ancient Germanic Goddess of the soil. It is the third planet from the Sun.






19. Swamp that forms in the low lying flood plain behind a levee.






20. A commonly used measure of earthquake magnitude & based on a logarithmic scale. Each integral step on the scale represents a tenfold increase in the extent of ground shaking & as recorded on a seismograph.






21. 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.






22. The process by which an unconsolidated deposit of sediments is converted in to solid rock.






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






24. Any solid material that has settled out of a state of suspension in liquid.






25. The pattern of water circulation from the ocean to the atmosphere to the land and back to the ocean.






26. An individual grain or constituent of a rock.






27. The low spot between two successive waves.






28. A coral reef separated from the mainland by a lagoon.






29. A low & nearly flat accumulation of sediment deposited at the mouth of a river or stream & commonly triangular or fan-shaped.






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






31. An area subject to dust storms & especially south central United States .






32. A coral reef attached directly to the mainland.






33. Any of various minerals prized for beauty & durability & and rarity. A few noncrystalline materials of organic origin (e.g. & pearl & red coral & and amber) also are classified as gemstones.






34. Deep steep-sided depression in the ocean floor caused by the subduction of oceanic crust beneath either other oceanic crust or continental crust.






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






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






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






38. Living in water.






39. Living parts of the environment that can renew or replace themselves.






40. Mountains & characterized by extensive folding and thrust faulting & that form at convergent plate boundaries on continents.






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






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






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






44. Any molten material that is extrusive or volcanic & or the rock that forms from a molten extrusive. Molten rock that flows at the Earth's surface.






45. The oldest eon in Earth history & extending from the origin of the Earth to about 3.9 billion years ago.






46. A tool for measuring the relative clarity of water.






47. The amount of dissolved salt in water.






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






49. A natural depression in the surface of the land caused by the collapse of the roof of a cavern or subterranean passage & generally occurring in limestone regions.






50. 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.