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 rotation period of the Earth measured relative to the stars.






2. Venus






3. Large nebula consisting of very cold gas and dust






4. A galaxy emitting large amounts of energy at long wavelengths.






5. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies






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






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






8. Europa






9. The science of measuring light energy by wavelength.






10. Distribution of dust (tells us disk is thin) - find distances to O&B stars and H2 regions (arms are sights of star formation and OB stars live and die at location of birth) -Milky way has four arms. Sun is in spur apart from arms.






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






12. How is the Hubble Law consistent with an expanding universe?






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






14. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)






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






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






17. What are the three possible geometries of the universe?






18. A faint - remarkably uniform distribution of radiation in space






19. A very dense - highly populated cluster of galaxies






20. Venus (retrograde)






21. The lowest energy of an atom.






22. 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.






23. 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






24. A small spherical dark nebula






25. Population 1 with higher metals and contain many young stars in star clusters. Distribution of stars is everywhere in disk (arms only have 5% more stars)






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






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






28. A planet that is farther from the sun than the Earth is






29. The process that powers the sun and hydrogen bombs






30. 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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31. The apparent path of the Sun through the stars on the celestial sphere.






32. The process of acquiring material






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






34. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)






35. The rock that makes up the lunar maria






36. An object that may remain after a star explodes






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






38. The entity responsible for spiral arms in grand-design spiral galaxies






39. Jupiter - Saturn - Uranus - Neptune






40. A small chunk of rock in space






41. The number of protons in an atom.






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

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43. How did Earth come to have an oxygen rich atmosphere?






44. An element of a highly efficient - two-dimensional electronic light detector






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






46. The mix of pure photon energy that emerged at the start of the universe.






47. Dying large-mass stars lose their outer layers in a violent explosion creating large - chaotic remnants. these brighten like nova but are so much brighter and only occur ONCE PER STAR






48. 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






49. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object






50. A star that is burning hydrogen to helium in a shell surrounding it's core