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






2. Any class of objects with a uniform luminosity used to determine distance.






3. 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.






4. The opaque universe that existed for 300000 years after the Big Bang. (photons outnumbered nuclei by 1 billion to one - so less light)






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






6. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)






7. Venus






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






9. Mercury






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






11. A streak of light in the atmosphere






12. The process of acquiring material






13. The process responsible for creating the arms of flocculent spiral galaxies






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






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






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






17. Light-colored high-pressure bands in Jupiter's atmosphere






18. The lens that gathers the light in a refractor






19. Hydrogen and helium (mainly)






20. The layer of the sun just above the photosphere






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






22. 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






23. The source of the force that is accelerating the expansion rate of the universe.






24. A star that erratically and explosively brightens and dims






25. The study of the universe as a whole.






26. A plot of star absolute magnitude verses spectral type.






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






28. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy






29. Mercury






30. The place in the sky that the Earth's axis points toward (can be either north or south)






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






32. Comglomerates of ice and rock that orbit the sun in highly elliptical paths






33. 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






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






35. Venus






36. The imaginary sphere centered on the Earth that hols the stars.






37. The part of the Milky way that has on-going star formation






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






39. Venus (retrograde)






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






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






42. A large and bright but cool star.






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






44. The north-south line passing directly overhead through the zenith.






45. 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






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






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






48. The final end state of an intermediate to high mass star. An entity in which all the electrons have been pushed into the protons.






49. A high-pressure bulge in Neptune's southern hemisphere






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