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






2. Any porous and permeable rock that yields oil or natural gas.






3. Containing moisture.






4. 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.






5. 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.






6. The galaxy where Earth is located.






7. Of or relating to or containing basalt & a dark & dense & extrusive rock that has a silica content of 40% to 50% and makes up most of the ocean floor.






8. Scratches & or small channels & gouged by glacier action. Occur on boulders & pebbles & and bedrock. Striations along bedrock indicate direction of ice movement.






9. A steep or vertical cliff & either above or below sea level.






10. All unconsolidated materials above bedrock. Natural earthy materials on the Earth's surface & in places modified or even made by human activity & containing living matter & and supporting or capable of supporting plants out of doors.






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






12. Plutonic. Antonym of extrusive. Pertaining to igneous rocks or features formed by the emplacement of magma in pre-existing rocks.






13. 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.






14. An aggregate of one or more minerals in varying proportions.






15. Where one plate slides beneath another plate as the two are pushed together & a subduction zone.






16. A roughly circular reef with an occasional small & low & coral sand island surrounding a shallow lagoon.






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






18. The very slow & generally continuous downslope movement of soil and debris under the influence of gravity.






19. Swamp that forms in the low lying flood plain behind a levee.






20. The process by which building stone & usually in blocks or sheets & is extracted from the Earth. radiation -- (Electromagnetic radiation) -- energy that travels through space in the form of waves without the intervention of matter & as in the transp






21. A collection of maps.






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






23. The explosion of a dying giant or supergiant star.






24. A seismic body wave that involves particle motion from side to side & perpendicular to the direction of wave propagation. S-waves are slower than P-waves and cannot travel through a liquid.






25. A valley carved by glacier erosion and whose cross-valley profile has steep sides and a nearly flat floor & suggestive of a large letter 'you'.






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






27. A giant structure that contains hundreds of billions of stars.






28. The level of light that penetrates through water.






29. 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.






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






31. A giant structure that contains hundreds of billions of stars.






32. A substance that produces negatively charged hydroxide ions ( OH- ) in water and reacts with acids to form salts.






33. The transformation of a soil from a solid to a liquid state as the result of increased pore pressure.






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






35. 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.






36. The very small particles of dirt & soot & and other pollutants that are present in the air.






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






38. The speed at which water flows.






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






40. A building that contains one or more telescopes.






41. The green pigment in the cells of many plants that enables them to use sunlight to convert carbon dioxide and water into carbohydrates in the process called photosynthesis.






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






43. Heat transport by direct transfer of energy from one particle to another & without moving the particle to a new location.






44. Living on land.






45. Distance over which wave-forming winds blow.






46. A glaciated valley now flooded by the sea.






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






48. A term applied to large areas of basaltic lava presumably extruded from fissures.






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






50. Property possessed by certain rocks of breaking with relative ease along parallel planes or nearly parallel surfaces in their crystal structures where the bonds are weakest.