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 prediction that climate will warm as a result of the addition to the atmosphere of humanly produced greenhouse gases.






2. Verifying assessments made from satellite data by doing direct & 'on-the ground' measurements.






3. Glacial deposits laid down directly by glaciers or laid down in lakes & ocean & or streams as result of glacial activity.






4. A type of disintegration in which jointed rock is forced apart by the expansion of water as it freezes in fractures.






5. The speed at which water flows.






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






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






8. Living parts of the environment that can renew or replace themselves.






9. The amount of material a stream carries in suspension.






10. A permeable region of rock or soil through which ground water can move.






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






12. Lava extruded beneath water characterized by pillow shapes.






13. 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.






14. Similar to a groin but built to keep sand out of a harbor entrance.






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






16. The condition of equilibrium & comparable to floating & of units of the lithosphere above the asthenosphere.






17. The way in which a rock or mineral breaks in random patterns rather than cleaving






18. A hydrocarbon (coal or petroleum) that can be extracted from the Earth for use as a fuel. Fossil fuels are non-renewable energy sources.






19. 1. A low & bowl-shaped area of land surrounded by higher lands. 2. any large depression in which sediments are deposited.






20. The mass of an object divided by its volume.






21. 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.






22. Lacking in rainfall & very dry.






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






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






25. A layer of sedimentary rock; plural is strata.






26. A community of plants and/or animals and its physical environment & regarded as a unit.






27. The method of locating an epicenter by determining how far it lies from three widely separated seismographs.






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






29. 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 &






30. Forms along a coast as wave erosion cuts through a headland.






31. Verifying assessments made from satellite data by doing direct & 'on-the ground' measurements.






32. A landscape that develops from the action of ground water in areas of easily soluble rocks. It is usually characterized by caves & underground drainage and sinkholes.






33. A small ice sheet.






34. Produced as a wave steepens and falls forward as the wave nears the shore.






35. 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.






36. The outermost layer of the Earth & varying in thickness from about 10 kilometers (6 miles) below the oceans & to 65 kilometers (about 40 miles) below the continents; represents less than 1 percent of the Earth's volume.






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






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






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






40. A rock changed from its original form and/or composition by heat & pressure &shearing stress & or chemically active fluids & or some combination of them.






41. A supercontinent that existed from the the end of the Permian to the Jurassic & 300 to 200 million years ago & assembled from large continents like Euramerica & Gondwana & and Siberia & as well as smaller landmasses like the Cathaysian and Cimmerian






42. 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.






43. Extending across a continent.






44. 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.






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






46. Where two plates collide to form mountains.






47. The way in which a rock or mineral breaks in random patterns rather than cleaving






48. Mountains & characterized by extensive folding and thrust faulting & that form at convergent plate boundaries on continents.






49. A large area of flat or nearly flat land.






50. An informal term to include all geologic time from the beginning of the Earth to the beginning of the Cambrian period 570 million years ago.