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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. No identifiable layers of minerals in a rock sample






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






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






4. 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.






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






6. A large area with common features that set it apart from other areas.






7. One of several rock-forming minerals that contain at least 95% silica (quartz). and usually one or more other common elements.






8. Pertaining to or composed of granite & a coarse-grained igneous rock dominated by light-colored minerals & consisting of about 50 percent orthoclase & 25 percent quartz & and balance of feldspars and ferromagnesian silicates. Granite is commonly foun






9. A waterway from open ocean into a lagoon.






10. A narrow strip of land that has water on either side and connects two larger bodies of water.






11. 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.






12. Destruction of the ozone layer caused by the release of CFC's (chlorofluorocarbons) into the atmosphere which react chemically with ozone and break it down into different gases.






13. The generally dark & more or less stable part of the organic matter in a soil & so well decomposed that the original sources cannot be identified.






14. The average weather conditions of an area over many years & as measured by temperature & wind speed & and precipitation.






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






16. 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.






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






18. 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.






19. The process of removing metal from ore.






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






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






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






23. A small ice sheet.






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






25. The process of mountain building.






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






27. Woodland that usually gets at least 100 inches of rain each year.






28. A valley carved by glacier erosion and whose cross-valley profile has steep sides and a nearly flat floor & suggestive of a large letter 'you'.






29. The region of a shore that is covered at high tide and exposed at low tide.






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






31. Named after the Roman god of the sea. It is the eighth planet from the Sun.






32. 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.






33. The physical & chemical & and biological processes by which rock at or near the Earth's surface is broken down into smaller pieces.






34. A mound or ridge of sediment deposited by a glacier.






35. A process of land degradation initiated by human activity & particularly in the zones along the margins of deserts.






36. Gases that can be dissociated by solar radiation & which releases chlorine & which in turn destroys ozone.

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37. (Latin- Terra & Greek- Gaia) Earth is named after the ancient Germanic Goddess of the soil. It is the third planet from the Sun.






38. To preserve & or to avoid wasteful use.






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






40. A molecule composed of three atoms of oxygen and mostly found in the stratosphere. Though beneficial in the upper atmosphere & at ground level & ozone is called photochemical smog & and is a respiratory irritant and considered a pollutant.






41. A molecule composed of three atoms of oxygen and mostly found in the stratosphere. Though beneficial in the upper atmosphere & at ground level & ozone is called photochemical smog & and is a respiratory irritant and considered a pollutant.






42. A waste material that contaminates air & water & or soil.






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






44. Turbulent stream water flow down a steep gradient & but not as steep as in a waterfall.






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






46. A natural depression in the surface of the land caused by the collapse of the roof of a cavern or subterranean passage & generally occurring in limestone regions.






47. A lake in an abandoned meander.






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






49. The naturally occurring material from which a mineral or minerals of economic value can be extracted at a profit.






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







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