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






2. A star that has become a red giant for the second and final time. It is burning helium to carbon in a shell surrounding the core






3. An element of a highly efficient - two-dimensional electronic light detector






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






5. The mirror that determines the focus configuration of a reflector






6. Infinitely long -> 10 cm






7. A bright area of higher temperature that often proceeds the formation of sunspots.






8. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.






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






10. The lens that gathers the light in a refractor






11. The rate of expansion of the universe.






12. Material that shoots rapidly out into space. Flares cause Auroras






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






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






15. The measure of a variable star's apparent magnitude as it brightens and dims with time






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






17. What is the universe expanding into?






18. A star that is in the process of forming. It glows from gravitational contraction






19. Long - meandering cliff formed when a planet surface cools and shrinks






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






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






22. A two-filter measure of the color - and hence temperature - of a star.






23. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas






24. Venus






25. A repeated - periodic push or pull capable of summing into a larger push or pull






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






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






28. A galaxy emitting large amounts of energy at long wavelengths.






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






30. The Greek philosopher responsible for making the stellar magnitude scale.






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






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






33. A small and dim but hot star.






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






35. 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)






36. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.






37. The point in its orbit where a planet is farthest from the sun






38. A bright area of higher temperature that often proceeds the formation of sunspots.






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






40. 1 mm 1μm






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






42. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)






43. The high- temperatature outer layer of the sun






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






45. Jupiter - Saturn - Uranus - Neptune






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






47. 10 cm -> 1 mm






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






49. The light produced when particles from the sun collide with atmospheric molecules






50. A star fusing hydrogen to helium in it's core







Sorry!:) No result found.

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