Test your basic knowledge |

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. What do we think the actual fate of the universe will be and why do we think this?






2. The distance a moon can be from a planet before shattering from tidal forces






3. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.






4. Approximate speed of light in a vacuum






5. The lens that gathers the light in a refractor






6. Centered on the Earth






7. The process responsible for creating the arms of flocculent spiral galaxies






8. The area behind a lens where images are resolved






9. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.






10. Mercury - Venus - Earth - Mars






11. The imaginary sphere centered on the Earth that hols the stars.






12. The projection of the Earth's equator onto the celestial sphere.






13. Material that shoots rapidly out into space. Flares cause Auroras






14. What is the universe expanding into?






15. The particle horizon is the farthest we can see. It exists because the universe had a beginning and thus a definite age. Light from distances farther away from the particle horizon have not had time to reach us yet.






16. What Ole Roemer used to measure the speed of light in a vacuum






17. Jupiter - Saturn - Uranus - Neptune






18. What Ole Roemer used to measure the speed of light in a vacuum






19. A planet that is closer to the sun than the earth






20. The relation that tells how light dims with distance.






21. When one side of a body always faces the planet it revolves around






22. The mirror that gathers the light in a reflector






23. A crystalline patter found in iron meteorites






24. The family of radiant energy that includes light as a subset






25. An entity that is likely in the nucleus of most - if not all - galaxies.






26. The point directly overhead.






27. Either Io -Europa - Ganymede - or Callisto






28. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.






29. Long - meandering cliff formed when a planet surface cools and shrinks






30. A telescope that uses lenses to focus light






31. Neptune or uranus






32. Hurricane-like vortex in southern-hemisphere winds to north and south blow in opposite directions which keep it spinning and with no subsurface features like mountians it persists.






33. A huge sphere of tenuous gas surrounding the nucleus of a comet






34. Mercury and venus






35. Moon in less than the angular diameter of the Sun.






36. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder






37. Extends to a distance of 50000AU. Same objects as in the Kuiper belt-when they fall in toward the sun they become comets. Debris from comets hitting the Earths atmosphere cause meteor showers.






38. A star fusing hydrogen to helium in it's core






39. The oldest terrain on the moon






40. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.






41. That which is responsible for Jupiter's magnetic field






42. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy






43. The sinking of denser elements to the center of a young molten planet






44. The family of radiant energy that includes light as a subset






45. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.






46. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere






47. N=are*Fp(Ne)(Fl)(Fi)(Fc)(L) N: number of civilizations possible to communicate with are*: rate solar-like stars are created Fp: fraction of stars with planets Ne: number of planets like ours Fl: fraction of planets with life Fi: intelligent life Fc:






48. Earth






49. The line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.






50. Hydrogen and helium (mainly)







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Can you answer 50 questions in 15 minutes?


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