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






2. The location of a supermassive black hole






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






4. The location around an atom where an electron resides.






5. Is there water on the moon?






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






7. A push or a pull






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






9. The lowest energy of an atom.






10. Matter that reveals itself only through its gravitational attraction






11. A term referring to the orbital character of stars near the Sun






12. A planet orbiting about a distant star






13. Flat disk with gas - dust - H2 regions - molecular clouds - dust young stars and remnants of old planetary nebula and supernova remnants. stars spin together with similar velocities called differential rotation






14. The entity from which the whole universe is postulated to have come from.






15. A small and dim but hot star.






16. Large nebula consisting of very cold gas and dust






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






18. Form honeycomb like patterns surrounding empty or nearly empty voids.






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






20. The mass of an object divided by its volume






21. The organized effort to find life elsewhere in the universe. (Search for Extra-Terrestrial Intelligence)






22. A method of finding a star's distance from its absolute magnitude and spectral type or color.






23. 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






24. Centered on the Earth






25. First accurately measured the speed of light in a vacuum






26. Matter so dense that even light cannot escape its gravity






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






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






29. 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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30. Approximate speed of light in a vacuum






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






32. The oldest part of the Milky Way






33. When the Sun is farthest north of the celestial equator (about June 22)






34. Consists of old red stars in slow orbits that plunge through disk and bulge. about 1% are old - round globular clusters.






35. 10 nm 10^2 nm






36. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker






37. Titan






38. Light-flaky crust - convective currents cause it to wrinkle and bunch (1/5 of surface). uniform cratering suggests lack of weathering and tectonics. volcanoes are flat due to atmospheric pressure.






39. The state of having a balance between inflowing and outflowing heat-- the temp at every radial point is different but constant






40. The layer of the sun just above the photosphere






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






42. The oldest grouping of stars - found in the galaxy halo






43. Jupiter






44. A term referring to Earth-like planets






45. Radiation emitted when charged particles spiral rapidly in a magnetic field. come off of jets from black holes.






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






47. A large and bright but cool star.






48. A bright area of higher temperature that often proceeds the formation of sunspots.






49. A star that has become a red giant for the second and final time. It is burning helium to carbon in a shell surrounding the core






50. The rock that makes up the lunar highlands