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. A particle of light.






2. The era when the ratio of matter to energy greatly favored matter. (verses radiation dominated universe where it was opaque. Matter is now dominated by gravity not photons)






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






4. 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.






5. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting






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






7. Heavier elements such as iron - silicon - magnesium - sulfer - nickel






8. The science of measuring the apparent magnitudes of stars by imaging them through different filters.






9. Venus






10. A spinning neutron star






11. A fusion process in which protons build together to form helium






12. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.






13. A planet that is closer to the sun than the earth






14. The dark - relativley smooth areas on the moon; Latin for sea






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






16. The universe is isotropic - homogeneous - and without beginning or end in time and space. If the universe is truly homogeneous then every line of sight will eventually end on a galaxy. If it has existed forever then there has been enough time for lig

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






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






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






20. The dark - relativley smooth areas on the moon; Latin for sea






21. Mercury






22. A small round distribution of gas surrounding a dying star






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






24. Originially thought to be stars emitting radio radiation but are now concluded to be nuclei of distant galaxies (same as radio galaxies aka emit streams of material)






25. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder






26. Mercury and venus






27. The elementary building blocks from which protons and neutrons are formed.






28. When the Moon entirely blocks the Sun.






29. 10 cm -> 1 mm






30. The process of acquiring material






31. A spread of light with an uninterrupted wavelength distribution of energy.






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






33. 1μm 100 nm






34. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density






35. An object that may remain after a star explodes






36. 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.






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






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






39. Centered on the sun.






40. A spectrum of light with energy at only a few wavelengths.






41. Dying small mass stars lose their outer layers in a relatively gentle way - creating a round or bipolar nebula about the star (round like planets)






42. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process






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






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






45. Jupiter






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






47. An energetic event taking place in the early universe






48. The family of radiant energy that includes light as a subset






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






50. The elementary building blocks from which protons and neutrons are formed.







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Can you answer 50 questions in 15 minutes?


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