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. 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






2. A glaciated valley now flooded by the sea.






3. 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






4. The amount of dissolved salt in water.






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






6. Where two plates are moving in opposite directions as in a mid-ocean ridge.






7. A general term including both oil and natural gas.






8. Distance over which wave-forming winds blow.






9. The upper horizons in a soil & through which gravitational moisture travels & removing soluble decomposition products.






10. A small ice sheet.






11. Containing moisture.






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. Materials that are found in nature that are useful or necessary for people to live.






14. A vent on the seafloor from which hydrothermal fluids are emitted. Upon mixing with seawater and cooling & the fluids precipitate a cloud of fine-grained sulfide minerals that resembles a cloud of black smoke.






15. A lake in an abandoned meander.






16. The green pigment in the cells of many plants that enables them to use sunlight to convert carbon dioxide and water into carbohydrates in the process called photosynthesis.






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






18. The theory that states that the present-day continents are the fragmented pieces of preexisting larger landmasses called supercontinents.






19. 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 &






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






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






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






23. 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'.






24. A volcanic mountain on the seafloor. If flat-topped & it is a guyot.






25. That part of the continental margin that lies between the continental shelf and the continental rise. Slope relatively steep & 3o - 6o. The continental slope is underlain by crustal rocks of the continent.






26. Containing moisture.






27. The processes (mechanical and chemical) responsible for the wearing away & loosening & and dissolving of materials of the Earth's crust.






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






29. Ratio between weight of given volume of material and weight of equal volume of pure water.






30. The area bordering a stream over which water spreads when the stream tops its channel banks.






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






32. A volcano in the shape of a flattened cone & broad and low & built by very fluid flows of basaltic lava.






33. 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.






34. A pillar formed as a stalactite and stalagmite meet.






35. A process by which salts accumulate in soil.






36. A volcanic mountain on the seafloor. If flat-topped & it is a guyot.






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






38. Highly mafic igneous volcanic rock & typically fine-grained and dark in color; rough volcanic equivalent of gabbro. Basalt is the most abundant volcanic rock in the Earth's crust.






39. A chuck of rock or dust in space.






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






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






42. The attractive force between two objects; its magnitude depends on their masses and the distance between them.






43. 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.






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






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






46. A process of erosion in which wind carries off particles of dust and sand.






47. A supercontinent that existed from the Jurassic to Early Tertiary after splitting from Pangea; composed of Laurentia & Baltica & Avalonia & (modern North America & Scandinavia & Greenland & Western and Central Europe); eventually fragmented into Eur






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






49. The most recent eon of geologic time beginning 570 million years ago and continuing to the present.






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