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






2. The Earth's crust underlying the ocean basins which is formed at mid-oceanic ridges. It is typically 5 to 10 kilometers thick composed of basalt.






3. Heat transport by moving particles & and the thermal energy that they carry & to a new location.






4. A study designed to collect critical data to be used for comparison or as a control in a later study.






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






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






7. Mars is named after the Roman god of war. It is the fourth planet from the Sun.






8. 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.






9. A narrow strip of land along the margin of the ocean extending inland for a variable distance from low water mark.






10. Any natural concentration of a valuable material in the Earth's crust & whether that material can be extracted profitably or not.






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






12. A time of unusual winds and currents in the Pacific Ocean . El Nino generally causes warmer-than-normal sea surface temperatures and increased rainfall and storm activity.






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






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






15. The internal resistance to flow in a liquid.






16. 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.






17. 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.






18. Weathering processes that are the result of chemical reactions. Example: the transformation of orthoclase to kaolinite.






19. A type of volcanic eruption characterized by nuees ardentes and the development of lava domes.






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






21. 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






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






23. 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.






24. An area in which a large number of windmills have been erected to generate electrical power.






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






26. An earthquake that follows and has its epicenter near a larger earthquake.






27. 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.






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






29. Molten rock & containing dissolved gases and suspended solid particles. At the Earth's surface & magma is known as lava.






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






31. Containing moisture.






32. The level of light that penetrates through water.






33. A portable time keeper with a mechanism for ensuring accuracy and adjusting itself & used for determining longitude at sea.






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






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






36. (Greek-Aphrodite)named after the Roman goddess of love. It is the planet closest in size to Earth and the second planted from the Sun.






37. To preserve & or to avoid wasteful use.






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






39. A device built to study distant objects by making them appear closer.






40. The processes of weathering by which physical actions such as frost wedging break down a rock into fragments & involving no chemical change.






41. The height of a place above sea level.






42. The rise and fall of sea level caused by the gravitational pull of the Sun and Moon on the Earth.






43. As applied to glacier ice & the process by which ice below the snow line is wasted by evaporation and melting.






44. The rigid outer shell of the Earth. It includes the crust and uppermost mantle and is on the order of 100 km in thickness.






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






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






47. A general term for a relatively hard layer of soil at or just below the ground surface & cemented by silica & iron oxide & calcium carbonate & or organic matter.






48. The speed at which water flows.






49. The accumulation of material in layers or beds.






50. 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.