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. Bent rock strata.






2. A large ridge or mound-like structure within a body of water that is built by calcareous organisms such as corals & red algae & and bivalves.






3. The speed at which water flows.






4. An abandoned meander .






5. 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.






6. 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.






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






8. The process of one plate descending beneath another.






9. A statement of relative age in layered rocks: In a series of sedimentary rocks that has not been overturned & the topmost layer is always the youngest and the bottommost layer is always the oldest.






10. A general term for a relatively hard layer of soil at or just below the ground surface & cemented by silica & iron oxide & calcium carbonate & or organic matter.






11. 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






12. The southern portion of the late Paleozoic supercontinent known as Pangea. It means & literally 'Land of the Gonds' (a people of the Indian subcontinent).The supercontinent existed from Cambrian to Jurassic time & mainly composed of South America &






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






14. 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






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






16. 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.






17. An aggregate of one or more minerals in varying proportions.






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






19. 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.






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






21. An instrument used to measure the speed of wind.






22. The two days of the year on which neither hemisphere is tilted toward or away from the sun.






23. That portion of the Earth below the crust and reaching to about 2 &780 km & where a transition zone of about 100 km thickness separates it from the core.






24. Any natural concentration of a valuable material in the Earth's crust & whether that material can be extracted profitably or not.






25. The amount of dissolved salt in water.






26. A building that contains one or more telescopes.






27. The top of a wave.






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






29. Fossils formed when water containing minerals leaks into a mold. The minerals harden to form a copy of the original structure or organism.






30. The southern portion of the late Paleozoic supercontinent known as Pangea. It means & literally 'Land of the Gonds' (a people of the Indian subcontinent).The supercontinent existed from Cambrian to Jurassic time & mainly composed of South America &






31. Either the northern or southern half of the Earth as divided by the equator & or the eastern or western half as divided by a meridian.






32. A narrow & steep-walled depression in the ocean floor & much deeper than the adjacent ocean and associated with a subduction zone.






33. 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.






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






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






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






37. Elongated rises on the ocean floor where basalt periodically erupts & forming new oceanic crust.






38. Surficial mining & in which the valuable rock is exposed by removal of overlying rock or soil.






39. A person who makes maps.






40. A vent in the surface of the Earth & from which lava & ash & and gases erupt.






41. 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.






42. A device built to study distant objects by making them appear closer.






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






44. A natural open space underground & large enough for a person to enter. Most commonly occur by the dissolution of soluble rocks & generally limestone.






45. The tectonic region in which two plates meet.






46. A waterway from open ocean into a lagoon.






47. An instrument that detects & magnifies & and records vibrations of the Earth & especially earthquakes.






48. An artificial hill formed by the debris of successive human settlements.






49. 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.






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