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






2. A rock that has crystallized from a molten state.






3. 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 &






4. A floating ice sheet extending across water from a land-based glacier.






5. A lake in an abandoned meander.






6. Sediments produced directly by the life processes of plants or animals.






7. 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.






8. A post of dripstone growing up from a cave floor.






9. No identifiable layers of minerals in a rock sample






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






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






12. 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.






13. To change back and forth uncertainly.






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






15. The area immediately below the ground surface within which pore spaces are partially filled with water and partially filled with air.






16. A division of geologic time next smaller than the eon and larger than a period. Example: The Paleozoic era is in the Phanerozoic eon and includes & among others & the Devonian period.






17. A ridge of high water associated with a hurricane and which floods over the shore .






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






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






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






21. 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.






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






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

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






25. A measure of the strength of an earthquake based on the amount of movement recorded by a seismograph . compare Richter scale.






26. An area where fresh water comes into contact with seawater & usually in a partly enclosed coastal body of water; a mix of fresh and salt water where the current of a stream meets the tides.






27. 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






28. Iron & aluminum & magnesium & manganese & and titanium. Ores of the abundant metals only need to be 3 - 5 times as metal-rich as average rock.






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






30. A large & basin-shaped volcanic depression & more or less circular in form. Typically steep-sided & found at the summit of a shield volcano.






31. A sea wave produced by any large-scale & short duration disturbance on the seafloor & commonly a shallow submarine earthquake but possibly also a submarine slide or volcanic eruption.






32. Any porous and permeable rock that yields oil or natural gas.






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






34. Water beneath the Earth's surface.






35. (Latin- Sol & Greek- Helios)the closest star to Earth. It is a giant ball of gas without any solid surface.






36. An era of geologic time lasting from 570 to 245 million years ago.






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






38. Any of various minerals prized for beauty & durability & and rarity. A few noncrystalline materials of organic origin (e.g. & pearl & red coral & and amber) also are classified as gemstones.






39. A segment of an active fault zone that has not experienced a major earthquake during a time period when most other segments of the zone have. They are generally regarded as having a higher potential for future earthquakes.






40. A small ice sheet.






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






42. Plutonic. Antonym of extrusive. Pertaining to igneous rocks or features formed by the emplacement of magma in pre-existing rocks.






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. The process of removing metal from ore.






45. 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.






46. 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.






47. All of space and everything in it.






48. A hot & gaseous & self-luminous celestial body & as the Sun.






49. The acidity in rain due to gases from internal combustion engines and coal- and oil-burning power plants.






50. Long narrow beaches separated in many places from the mainland by lagoons.