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. The measure of a variable star's apparent magnitude as it brightens and dims with time






2. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes






3. The instant of time after the Big Bang when space and time obtained their characteristics. (t=10^-43 sec when gravity freezes out-instant when gravity started existing as a separate force)






4. The movement of the Earth's crustal plates riding on top of the mantle.






5. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)






6. Electromagnetic Radiation






7. The apparent magnitude a star would have if it were at a distance of 10 parsecs.






8. The area behind a lens where images are resolved






9. Matter that reveals itself only through its gravitational attraction.






10. Milky way galaxy is a member - a small poor cluster-about 30 galaxies






11. Large nebula consisting of very cold gas and dust






12. A perfect absorber and radiator of electromagnetic radiation.






13. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.






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






15. The act of removing an electron from an atom.






16. An object that may remain after a star explodes






17. A large and bright but cool star.






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






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






20. The science of measuring light energy by wavelength.






21. A location on an H-are Diagram where evolving stars pulsate






22. Population 1- similar to the sun and 2% of elements are metal - Population 2- formed before gas was metal- only a fraction of mass is metal.






23. The slow wobble of the Earth on its rotation axis.






24. A spinning neutron star






25. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.






26. 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.






27. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto






28. The process similar to conduction by which energy moves from the solar core to the convective layer






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






30. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE






31. The rock that makes up the lunar maria






32. The philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


33. The law that predicts the possible types of spectra.

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


34. The lens that gathers the light in a refractor






35. The most mass a white dwarf can have before collapsing to a neutron star






36. A perfect absorber and radiator of electromagnetic radiation.






37. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.






38. The mirror that gathers the light in a reflector






39. The process of acquiring material






40. Centered on the sun.






41. The movement of the Earth's crustal plates riding on top of the mantle.






42. 10 nm 10^2 nm






43. Saturn






44. A rock or iron specimen that has fallen from space






45. The measure of a variable star's apparent magnitude as it brightens and dims with time






46. When material is heated and moves taking the heat energy with it






47. Clouds of low density gas often found glowing faintly on either side of an AGN.






48. Titan






49. 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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


50. The first rock-sized bodies that formed in the solar nebula from dust grains