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






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






3. The line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.






4. Jupiter






5. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object






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






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

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8. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






9. The dimming of starlight by intervening dust






10. The projection of the Earth's equator onto the celestial sphere.






11. When the Moon entirely blocks the Sun.






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






13. 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)






14. When the Sun is farthest south of the celestial equator (About December 22)






15. Half of the longest diameter across an ellipse






16. The line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.






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






18. A volume of space where few - if any - galaxies are located






19. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE






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






21. A perfect absorber and radiator of electromagnetic radiation.






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






23. 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)






24. A star that blows itself apart






25. The distance between a lens and its focal plane






26. 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)






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






28. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids






29. The amount of density needed to stop the universe from expanding and to begin the big crunch represented by Pc






30. 10^2 nm 10^7 nm






31. A telescope that uses mirrors to focus light






32. Why do Galaxies move very rapidly in the interiors of the dense clusters?






33. The process of acquiring material






34. The temp at which a substance in the vacuum of space solidifies






35. A word used in astronomy to describe all elements besides hydrogen and helium






36. An empirical scheme for predictin ghe orbital distances of planets






37. An important quality of telescopes that increases as the square of the primary mirror or objective lens






38. The number of protons in an atom.






39. 1μm 100 nm






40. Hot cells of gas that rise and fall in the hotosphere






41. Mercury






42. The gap etween saturn's A and B rings






43. Earth






44. A planet orbiting about a distant star






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






46. A particle of light






47. Light scattered through the atmosphere that degrades astronomical images






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






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






50. Matter that reveals itself only through its gravitational attraction







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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