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. Verifying assessments made from satellite data by doing direct & 'on-the ground' measurements.






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






3. All unconsolidated materials above bedrock. Natural earthy materials on the Earth's surface & in places modified or even made by human activity & containing living matter & and supporting or capable of supporting plants out of doors.






4. A term applied to large areas of basaltic lava presumably extruded from fissures.






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






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






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






8. A roughly circular reef with an occasional small & low & coral sand island surrounding a shallow lagoon.






9. Heat transport by moving particles & and the thermal energy that they carry & to a new location.






10. A disease-causing organism or entity & such as a bacterium or virus.






11. Deserts formed by blocking moisture-bearing winds with mountain barriers.






12. An area of land that delivers runoff water & sediment & and dissolved substances to surface water bodies & such as rivers or lakes. All watersheds consist of boundaries & a basin and collection areas.






13. A detailed mathematical description of the cause-and-effect relationships between events that can be used to predict or explain other such events.






14. The concept of a sequence of events involving the formation & alteration & destruction and reformation of rocks as a result of geologic processes.






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






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






17. 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.






18. In the geologic time scale a unit of time less than an era and greater than an epoch. Example: The Tertiary period was the earliest period in the Cenozoic era and included & among others & the Eocene epoch.






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






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






21. The initial point within the Earth that ruptures in an earthquake & directly below the epicenter. The point within the Earth which is the center of an earthquake & at which strain energy is first released and converted to elastic wave energy.






22. Any object that revolves around another object in space.






23. A flood that rises and falls very rapidly.






24. The science that deals with the study of the planet Earth--the materials of which it is made & the processes that act to change these materials from one form to another & and the history recorded by these materials; the forces acting to deform the ou






25. A wall built out from the shore & usually at perpendicular to it to trap sand carried by longshore currents .






26. A sharp bend & loop or turn in a stream's course. When abandoned & it is called a meander scar or an oxbow.






27. An earthquake that follows and has its epicenter near a larger earthquake.






28. An area in which a large number of windmills have been erected to generate electrical power.






29. Lava extruded beneath water characterized by pillow shapes.






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






31. A substance that produces positively charged hydrogen ions (H+) when dissolved in water.






32. Imaginary lines on a map or globe that measure distance in degrees east or west of the prime meridian. Longitude lines extend vertically & from pole to pole on a globe.






33. A process by which salts accumulate in soil.






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






35. A thickened elevated region of Earth's crust that is mainly (but not entirely) above sea level.






36. A thickened elevated region of Earth's crust that is mainly (but not entirely) above sea level.






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






38. A deposit of partly decayed plant remains in a very wet environment; marsh or swamp deposit of plant remains containing more than 50 percent carbon.






39. No identifiable layers of minerals in a rock sample






40. Distance over which wave-forming winds blow.






41. A slide involving a downward and usually sudden movement of newly detached segments of bedrock sliding or slipping over an inclined surface of weakness such as a bedding plane & fault plane & or joint surface.






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






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






44. 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.






45. A Hawaiian term for a basaltic lava flow with a smooth & or ropy surface.






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






47. Synonym of intrusive. Antonym of volcanic. Applies to igneous rocks formed beneath the surface of the Earth; typically with large crystals due to the slowness of cooling.






48. The zones of seismic activity long which plates are in contact.






49. An individual grain or constituent of a rock.






50. Water beneath the Earth's surface.