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. Gases that can be dissociated by solar radiation & which releases chlorine & which in turn destroys ozone.

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






3. The closest star to Earth besides the sun. It is approximately 4 light years away.






4. An area of land that delivers runoff water & sediment & and dissolved substances to surface water bodies & such as rivers or lakes. All watersheds consist of boundaries & a basin and collection areas.






5. An era of time during the Phanerozoic eon lasting from 245 million years ago to 66.4 million ago.






6. 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 &






7. 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.






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. Any form of water & such as rain & sleet & or snow & that falls to Earth's surface.






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






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






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






13. 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.






14. A plate boundary in which plates on opposite sides of the boundary move past each other in opposite directions. The San Andreas fault of California is a good example.






15. (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.






16. Water that flows across watersheds during and immediately after severe rainstorms. In populated areas & stormwater runoff is often water that cannot be handled by existing sewer systems. Stormwater runoff is the leading source of water pollution in t






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






18. The theory of Plate Tectonics states that the Earth's crust is fragmented into a dozen or more large and small pieces floating on a semi-molten mantle.






19. The Sun with all the celestial bodies that revolve around it.






20. A deposit of partly decayed plant remains in a very wet environment; marsh or swamp deposit of plant remains containing more than 50 percent carbon.






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






22. Any form of water & such as rain & sleet & or snow & that falls to Earth's surface.






23. A dense & hot (sometimes incandescent) cloud of volcanic ash and gas produced in a Pelean eruption.






24. An eruption of lava that takes place from a fracture & usually without producing a cone.






25. The point on the Earth's surface where a magnetic needle points vertically downward (north magnetic pole) or vertically upward (south magnetic pole).






26. 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.






27. 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.






28. The precipitation that runs directly off the surface to stream or body of standing water.






29. The closest galaxy to the Milky way. It is approximately 2 million light-years away.






30. The process by which an unconsolidated deposit of sediments is converted in to solid rock.






31. A process by which salts accumulate in soil.






32. Any of various minerals prized for beauty & durability & and rarity. A few noncrystalline materials of organic origin (e.g. & pearl & red coral & and amber) also are classified as gemstones.






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






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






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






36. The galaxy where Earth is located.






37. A wall built out from the shore & usually at perpendicular to it to trap sand carried by longshore currents .






38. Deserts in zones of descending air between 25 degrees and 30 degrees north and south latitude.






39. A slide involving a downward and usually sudden movement of newly detached segments of bedrock sliding or slipping over an inclined surface of weakness such as a bedding plane & fault plane & or joint surface.






40. Water beneath the Earth's surface.






41. The straightening and/or deepening of a river channel.






42. Igneous. Antonym of intrusive. Synonym of volcanic. Pertaining to igneous rocks or features formed from lava released on the Earth's surface.






43. A mass of ice & formed by the recrystallization of snow & that flows forward & or has flowed at some time in the past.






44. A statement of relative age in layered rocks: In a series of sedimentary rocks that has not been overturned & the topmost layer is always the youngest and the bottommost layer is always the oldest.






45. The areas of & in & or constituting a city.






46. A large ridge or mound-like structure within a body of water that is built by calcareous organisms such as corals & red algae & and bivalves.






47. Imaginary lines on a map or globe that measure distance in degrees north or south of the equator. Latitude lines extend horizontally & from east to west on a globe.






48. A measure of the size of an earthquake in terms of the damage it causes.






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






50. The formation & advance and retreat of glaciers and the results of these activities.