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. Why do Galaxies move very rapidly in the interiors of the dense clusters?






2. The larger bodies that formed early in teh solar nebula that were chemically differentiated






3. 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.






4. 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:






5. The material from which the solar system formed






6. Either Io -Europa - Ganymede - or Callisto






7. All possible types of energy that can be emitted and absorbed by atoms.






8. The name for the only seriously considered theory of the universe.






9. Norhern lowlands- darker in color and have far fewer craters as if an ancient sea or ice field covered them. southern highlands- much higher in density of craters.






10. If stars have diff orbital periods - than any arms formed by stars will wind into a tight spiral pattern (billion yrs or so)






11. The mirror that gathers the light in a reflector






12. A force exerted by reflecting sunlight






13. A subatomic particle with a negative charge. It creates light.






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






15. The fusion process that turns three helium nuclei into a carbon nucleus






16. The law that syas light energy from a blackbody increases as (temperature^4)






17. Radiation (possibly left over from the big bang) that fills the universe. Perfect black body spectrum and tells us a bit aout how galaxies are formed.






18. A logarithmically scaled value for the measured brightness of a star.






19. Finding a star's absolute magnitude from it's placement on an HR diagram. After finding the absolute magnitude - we measure the apparent magnitude - for a distance modulus and use this to find the distance. This method is good for finding distances t






20. 1μm 100 nm






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






22. The point in its orbit where a planet is farthest from the sun






23. A representation of the changes in color and brightness of an evolving protostar.






24. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast






25. The rate of expansion of the universe.






26. Heavier elements such as iron - silicon - magnesium - sulfer - nickel






27. The high- temperatature outer layer of the sun






28. IO






29. The crust of a meteorite caused by its entry into Earth's atmosphere






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






31. The layer of the sun just above the photosphere






32. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.






33. A long-lived high-pressure bulge in Jupiter's southern hemisphere






34. Finding a star's absolute magnitude from it's placement on an HR diagram. After finding the absolute magnitude - we measure the apparent magnitude - for a distance modulus and use this to find the distance. This method is good for finding distances t






35. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction






36. Radiation given off by electrons accelerating in a magnetic field






37. A volume of space where few - if any - galaxies are located






38. Old - pock marked - icy surface - interior is not differentiated - geologically dead - NOT ACTIVE SURFACE






39. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






40. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE






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






42. Electromagnetic Radiation






43. An empirical scheme for predictin ghe orbital distances of planets






44. When the Sun moves from south to north across the celestial equator (about March 21)






45. Europa






46. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE






47. Dark - reddish - low-pressure bands in Jupiter's atmosphere






48. The temp at which a substance in the vacuum of space solidifies






49. A measure of the ability of a telescope to see fine detail






50. A distance measure determined by the shifting of a star against the background sky every 6 months.