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






2. Rock formed from the accumulation of sediment & Which may consist of fragments and mineral grains of varying sizes from pre-existing rocks & remains or products of animals and plants & the products of chemical action & or mixtures of these.






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






4. A major drainage divide separating the drainage to one ocean from another.






5. A glaciated valley now flooded by the sea.






6. The point on the Earth's surface where a magnetic needle points vertically downward (north magnetic pole) or vertically upward (south magnetic pole).






7. A supercontinent that existed from the Jurassic to Early Tertiary after splitting from Pangea; composed of Laurentia & Baltica & Avalonia & (modern North America & Scandinavia & Greenland & Western and Central Europe); eventually fragmented into Eur






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






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






10. Water beneath the Earth's surface.






11. The point on the Earth's surface directly above the focus of an earthquake.






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






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






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. The remains of an extremely massive star pulled into a small volume by the force of gravity.






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






17. The sum of the processes that result in the wearing away or the progressive lowering of the Earth's surface by weathering & erosion & mass wasting & and transportation.






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






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






20. A narrow strip of land along the margin of the ocean extending inland for a variable distance from low water mark.






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






22. A sea level change due to change in load on Earth's crust.






23. The direction & north (normal) or south (reversed) & that a magnetic compass needle points.






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






25. A building that contains one or more telescopes.






26. A system involving continuous interaction of the solid Earth & the atmosphere & the oceans and living things.






27. The tectonic region in which two plates meet.






28. An informal term to include all geologic time from the beginning of the Earth to the beginning of the Cambrian period 570 million years ago.






29. The sum of the processes that result in the wearing away or the progressive lowering of the Earth's surface by weathering & erosion & mass wasting & and transportation.






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






31. Lies half way between the north and south magnetic poles.






32. A river that is able to maintain its flow through a desert because of water received from outside the desert.






33. A sedimentary rock composed primarily of biogenic sediments.






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






35. 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.






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






37. The theory that states that the present-day continents are the fragmented pieces of preexisting larger landmasses called supercontinents.






38. The process of mountain building.






39. An informal term to include all geologic time from the beginning of the Earth to the beginning of the Cambrian period 570 million years ago.






40. Iron & aluminum & magnesium & manganese & and titanium. Ores of the abundant metals only need to be 3 - 5 times as metal-rich as average rock.






41. A time of unusual winds and currents in the Pacific Ocean . El Nino generally causes warmer-than-normal sea surface temperatures and increased rainfall and storm activity.






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






43. A flat & dry plain covered with short grass.






44. Deserts in zones of descending air between 25 degrees and 30 degrees north and south latitude.






45. 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.






46. Any seismic wave that travels through the body of Earth & rather than along its surface.






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






48. A type of volcanic eruption characterized by nuees ardentes and the development of lava domes.






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






50. 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.