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. Where is the center of the expansion






2. Titan






3. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.






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






5. A prominence seen against the disk of the sun






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






7. A word meaning 'the same everywhere throughout.'






8. 10 nm 10^2 nm






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






10. A particle of light.






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






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






13. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth






14. The science of measuring light energy by wavelength.






15. 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






16. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.






17. The normal eastward movement of a planet against the background of hte distant stars.






18. The study of the universe as a whole.






19. The mirror that gathers the light in a reflector






20. Either Io -Europa - Ganymede - or Callisto






21. N=are*Fp(Ne)(Fl)(Fi)(Fc)(L) N: number of civilizations possible to communicate with are*: rate solar-like stars are created Fp: fraction of stars with planets Ne: number of planets like ours Fl: fraction of planets with life Fi: intelligent life Fc:






22. A change in the appearance of the sun at the edge of the solar disk






23. 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)






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






25. Earth






26. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.






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






28. What causes the zones and belts on jupiter and saturn?






29. A measure of the force of gravity on an object






30. The gap inthe outer portion of Saturn's A ring






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






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






33. Jupiter - Saturn - Uranus - Neptune






34. A small spherical dark nebula






35. N=are*Fp(Ne)(Fl)(Fi)(Fc)(L) N: number of civilizations possible to communicate with are*: rate solar-like stars are created Fp: fraction of stars with planets Ne: number of planets like ours Fl: fraction of planets with life Fi: intelligent life Fc:






36. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)






37. In what chemical form are jupiters nitrogen - carbon and oxygen?






38. A word meaning 'the same in all directions.'






39. The time when the universe cooled sufficiently for atoms to exist. radiation dominated= first 300000 years - THEN era of recombination turns into matter dominated for next.






40. Half of the longest diameter across an ellipse






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






42. Elliptical orbits that come inside orbit of the Earth.






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






44. After stars form they pump light energy into surrounding gas causing it to heat up and glow (H2=ionized hydrogen - H1= neutral hydrogen in molcular couds)






45. Europa






46. 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






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






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






49. 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.






50. Is space infinitely large?

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