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. He area from which a stream and its tributaries receives its water.






2. The first scientist to make systematic use of the telescope in looking at the heavens.






3. Extending across a continent.






4. The elevation at which snow persists throughout the year.






5. The environment where a particular plant or animal is normally found.






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






7. A rigid segment of the Earth's lithosphere that moves horizontally and adjoins other plates along zones of seismic activity. Plates may include portions of both continents and ocean basins.






8. 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.






9. The portion of the continental margin that lies between the abyssal plain and the continental slope. The continental rise is underlain by crustal rocks of the ocean basin.






10. 1. A steep-walled & usually conical depression at the summit or on the flanks of a volcano & resulting from the explosive ejection of material from a vent. 2. A bowl-shaped depression with a raised & overturned rim produced by the impact of a meteori






11. In the geologic time scale a unit of time less than an era and greater than an epoch. Example: The Tertiary period was the earliest period in the Cenozoic era and included & among others & the Eocene epoch.






12. Applies to igneous rocks that cool on the surface of the Earth & including beneath water; typically with small crystals due to the rapidity of cooling. Synonym of extrusive. Antonym of plutonic.






13. The study of earthquakes & and of the structure of the Earth by both natural and artificially generated seismic waves.






14. A glaciated valley now flooded by the sea.






15. The top of a wave.






16. 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.






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






18. The seaward edge of coast between low tide and effective wave action.






19. The surface between the zone of saturation and the zone of aeration.






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






21. A measure of acidity.






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






23. A method of sediment transport in which the turbulence of a fluid is able to keep particles supported in the fluid.






24. The average weather conditions of an area over many years & as measured by temperature & wind speed & and precipitation.






25. The speed at which water flows.






26. The solid innermost part of the core with a diameter of a little over 1 &200 km.






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






28. A sedimentary rock composed primarily of biogenic sediments.






29. A valley caused by extension of the Earth's crust. Its floor forms as a portion of the crust moves downward along normal faults.






30. The internal resistance to flow in a liquid.






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






32. A naturally occurring inorganic solid that has a well-defined chemical composition and in which atoms are arranged in an ordered fashion.






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






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






35. Elongated rises on the ocean floor where basalt periodically erupts & forming new oceanic crust.






36. To preserve & or to avoid wasteful use.






37. 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.






38. Any solid material that has settled out of a state of suspension in liquid.






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






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






41. The zones of seismic activity long which plates are in contact.






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






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






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. The layer of gases (air) & that surrounds a planet or moon.






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






47. A lake in an abandoned meander.






48. The height of a place above sea level.






49. Lava extruded beneath water characterized by pillow shapes.






50. Deep steep-sided depression in the ocean floor caused by the subduction of oceanic crust beneath either other oceanic crust or continental crust.