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 lowest energy of an atom.






2. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.






3. Matter so dense that even light cannot escape its gravity






4. When one side of a body always faces the planet it revolves around






5. The larger bodies that formed early in teh solar nebula that were chemically differentiated






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






7. Centered on the sun.






8. The linear correlation between the rate of the expansion of the universe and distance. Says that as galaxies get farther away in space - the speed with which they recede from us increases. So we can measure the amount of recessional velocity and use






9. 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)






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






11. 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






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






13. The lens in a telescope used to determine the magnification






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






15. Mercury






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






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






18. The 'edge' of the universe. Light beyond this has not reached us yet.






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






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






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






22. A rock or iron specimen that has fallen from space






23. The lens in a telescope used to determine the magnification






24. The location of a supermassive black hole






25. The layer of the sun just above the photosphere






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






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






28. The 'edge' of the universe. Light beyond this has not reached us yet.






29. The larger bodies that formed early in teh solar nebula that were chemically differentiated






30. 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)






31. 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






32. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE






33. Jupiter - Saturn - Uranus - Neptune






34. A perfect absorber and radiator of electromagnetic radiation.






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






36. A bridge of material held in position above the solar surface. They can remain for hours even days






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






38. Venus (retrograde)






39. A huge sphere of tenuous gas surrounding the nucleus of a comet






40. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.






41. Neptune or uranus






42. Clouds of low density gas often found glowing faintly on either side of an AGN.






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






44. A telescope that uses mirrors to focus light






45. Clouds of low density gas often found glowing faintly on either side of an AGN.






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






47. What is the universe expanding into?






48. The force of attraction between any two objects having mass






49. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.






50. The state of having a balance between inflowing and outflowing heat-- the temp at every radial point is different but constant