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. Venus






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






3. Venus






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






5. A perfect absorber and radiator of electromagnetic radiation.






6. Saying that the sky should not get dark at night because all lines of sight end on a star meaning that the night sky should be ablaze BUT the big bang - because the universe had a beginning - says that the sky gets dark because out in space - galaxie

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7. An evolved star - past the helium flash that is burning helium to carbon in it's cores






8. When a planet lines up with the sun inthe sky






9. We can infer the absolute magnitude of pulsating variable stars by measuring their pulsation periods. The longer the pulsations - the greater their luminosities. We then again measure their apparent magnitudes - compare it with their absolute magnitu






10. Collections of young - hot stars






11. Distance from sun to nucleus- 8 kiloparsecs (26000 LY) - diameter of Milky way- 150000 LY - length for sun to orbit once around milky way- 250 million years






12. The dimming of starlight by intervening dust






13. 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






14. Any change in the speed or direction of an object's motion






15. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas






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






17. Distance from sun to nucleus- 8 kiloparsecs (26000 LY) - diameter of Milky way- 150000 LY - length for sun to orbit once around milky way- 250 million years






18. The Big Bang says that the universe has not existed forever. It had a distinct beginning about 14 billion years ago called the 'Big Bang'. Therefore light from any object more than 14 billion light years away has not had time to reach us. The other p

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19. Any change in the speed or direction of an object's motion






20. VENUS






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






22. An object that may remain after a star explodes






23. The location of a supermassive black hole






24. The mirror that determines the focus configuration of a reflector






25. Possible Fates of the Universe






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






27. When massive objects bend space and time enough to create multiple images of an object located behind them






28. The oldest terrain on the moon






29. A continuous spectrum of light missing energy at a few wave lengths.






30. A large - irregularly shaped rocky object orbiting the sun mostly between mars and jupiter. Left-over planetesimals






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






32. A galaxy sending out a stream of material from its nucleus






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






34. The nuclei of very distant galaxies. Likely a manifestation of supermassive black holes






35. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites






36. 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






37. The mass of an object divided by its volume






38. In Ptolemy's geocentric solar system - the small circle on which a planet moved.






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






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






41. Mercury






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






43. The linear correlation between the rate of the expansion of the universe and distance. Says that as galaxies get farther away in space - the speed with which they recede from us increases. So we can measure the amount of recessional velocity and use






44. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the






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






46. An energetic event taking place in the early universe






47. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.






48. A younger cluster of stars - found in the galaxy disk






49. A point in the sky where meteors appear to come from during a shower






50. The Greek philosopher responsible for making the stellar magnitude scale.