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 sudden fall of one or more large pieces of a rock from a cliff.






2. A planetary satellite.






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






4. A process by which salts accumulate in soil.






5. The persistence of wind-formed waves after wind ceases.






6. The speed at which water flows.






7. The principle that states the processes operating to change the Earth in the present also operated in the past.






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






9. A coral reef attached directly to the mainland.






10. A unit of length used in sea navigation based on the length of 1 minute of arc on a great circle. On Earth & 1 minute of latitude.






11. Deserts formed by blocking moisture-bearing winds with mountain barriers.






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






13. A commonly used scale of earthquake intensity.






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






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






16. 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.






17. 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 &






18. The direction & north (normal) or south (reversed) & that a magnetic compass needle points.






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






20. A hole or basin cut into bedrock of a stream by the abrasive action of pebbles and sand swirled by turbulent stream flow.






21. The persistence of wind-formed waves after wind ceases.






22. 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.






23. A lake of lava & usually basaltic & in a volcanic caldera.






24. An atmospheric shield providing the Earth with protection from ultra-violet rays which can cause sun burn & skin cancer and the destruction of the delicate plant life which supports the planet's food chain.






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






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






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






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






29. A commonly used scale of earthquake intensity.






30. The arrangement of rock units in the proper chronological order from youngest to oldest.






31. The accumulation of material in layers or beds.






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






33. Heat extracted from the Earth for use as an power source.






34. 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






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






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






37. 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.






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






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






40. Shapes & like mountains or hills that make up the Earth's surface.






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






42. A building that contains one or more telescopes.






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






44. 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.






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






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






47. Any accumulation of material & by settling from water or air & chemical precipitation & evaporation from solution & etc.






48. An eon of geologic time extending from about 3.9 billion years to 2.5 billion years ago.






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






50. A broad & mound-like mass of glacier ice that usually spreads radially outward from a central zone.