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. 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.






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






3. The process by which building stone & usually in blocks or sheets & is extracted from the Earth. radiation -- (Electromagnetic radiation) -- energy that travels through space in the form of waves without the intervention of matter & as in the transp






4. A sedimentary rock composed primarily of biogenic sediments.






5. Deposition of fine mineral particles (silt) on the beds of streams or lakes.






6. The process of removing metal from ore.






7. A method of sediment transport in which the turbulence of a fluid is able to keep particles supported in the fluid.






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






9. A unit of length used in sea navigation based on the length of 1 minute of arc on a great circle. On Earth & 1 minute of latitude.






10. A depression in the ground formed by the melting of a block of glacier ice buried or partially buried by drift.






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






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






13. The process by which ocean floors spread laterally from crests of main ocean ridges. As material moves laterally from the ridge & new material replaces it along the ridge crest by welling upward from the mantle.






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






15. 1. Breach in a natural levee . 2. Deep crevice or open fracture in glacier ice.






16. Weathering processes that are the result of chemical reactions. Example: the transformation of orthoclase to kaolinite.






17. The processes of weathering by which physical actions such as frost wedging break down a rock into fragments & involving no chemical change.






18. The process of one plate descending beneath another.






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






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






21. A group of islands; an expanse of water with scattered islands.






22. A rigid segment of the Earth's lithosphere that moves horizontally and adjoins other plates along zones of seismic activity. Plates may include portions of both continents and ocean basins.






23. An atmospheric shield providing the Earth with protection from ultra-violet rays which can cause sun burn & skin cancer and the destruction of the delicate plant life which supports the planet's food chain.






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






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






26. A downward distortion or dimple in the water table that forms as a well pumps water faster than it can flow through the aquifer.






27. Evidence in rock of the presence of past life & such as a dinosaur bone & an ancient clam shell & or the footprint of a long-extinct animal as well as life history artifacts.






28. The areas of & in & or constituting a city.






29. 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.






30. The symbol used on a map to indicate directions & both cardinal and ordinal.






31. 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.






32. A large amount of gas and dust in space & spread out in an immense volume.






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






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






35. A device containing a free-swinging magnetic needle that is attracted to Earth's magnetic North Pole. Used to determine direction of travel.






36. A continuous well-defined mass of material of sufficient ore content to make extraction economically feasible. compare mineral deposit.






37. A substance that produces negatively charged hydroxide ions ( OH- ) in water and reacts with acids to form salts.






38. A person who makes maps.






39. To preserve & or to avoid wasteful use.






40. The reserves of a valuable mineral commodity plus all other mineral deposits that may eventually become available & even those that are presumed to exist but have not yet been discovered and those that are not economically or technologically exploita






41. 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.






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






43. A fracture or zone of fractures along the boundaries of tectonic plates where movement has taken place.






44. The weak or 'soft' zone in the upper mantle just below the lithosphere & involved in plate movement and isostatic adjustments. It lies 70 to 100 km below the surface and may extend to a depth of 400 km.






45. A narrow & elongate region in which one lithospheric plate descends relative to another.






46. The part of the crust that directly underlies the continents and continental shelves. Averages about 35 km in thickness & but may be over 70 km thick under largest mountain ranges.






47. The relationship between distances in the area being mapped and distances in the map itself.






48. Open pit mining & typically for coal.






49. The partial or complete blocking from view of one object by another.






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