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 worldwide change in sea level & such as caused by melting glaciers.






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






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






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






5. A person who makes maps.






6. A commonly used scale of earthquake intensity.






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






8. Jupiter is named after the Roman king of the gods. It is the fifth planet from the Sun.






9. 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.






10. The tendency of a moving object to continue in a straight line or a stationary object to remain in place.






11. The dust-sized & sharp-edged & glassy particles resulting from an explosive volcanic eruption.






12. 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.






13. An isolated & steep-sided & rocky mass or island just offshore from a rocky headland & usually on a shore platform.






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






15. The closest star to Earth besides the sun. It is approximately 4 light years away.






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






17. Where one plate slides beneath another plate as the two are pushed together & a subduction zone.






18. 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.






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






20. A permeable region of rock or soil through which ground water can move.






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






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






23. Of or relating to or containing basalt & a dark & dense & extrusive rock that has a silica content of 40% to 50% and makes up most of the ocean floor.






24. Flat land covered with tall grass and wildflowers.






25. All of space and everything in it.






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






27. 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.






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






29. To change back and forth uncertainly.






30. The current geologic era & which began 66.4 million years ago and continues to the present.






31. The principle that states the processes operating to change the Earth in the present also operated in the past.






32. The level of light that penetrates through water.






33. Geologic time expressed in years before the present.






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. Where two plates are moving in opposite directions as in a mid-ocean ridge.






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






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






38. Formed when an organism is flattened (compressed) and a thin film of organic material from its body is left in the rock.






39. The innermost zone of Earth. It consists of two parts & an outer liquid section and an inner solid section & both chiefly of iron and nickel with about 10 percent lighter elements. It is surrounded by the mantle.






40. A measure of the size of an earthquake in terms of the damage it causes.






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






42. That portion of the resources for a valuable mineral commodity that can be extracted from the Earth at a profit today.






43. The process by which a binding & or cementing & agent is precipitated in spaces among individual particles of a deposit. Common cementing agents are calcite & quartz & and dolomite.






44. A waterway from open ocean into a lagoon.






45. A giant structure that contains hundreds of billions of stars.






46. The distance light travels through a vacuum in one year.






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. An individual grain or constituent of a rock.






49. A stone or boulder & glacially transported from place of origin and left in an area of different bedrock composition.






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