Have an account?
Skip to Content
Build your own quiz
Suggestions for you
77 questions
Show Answers
See Preview
- 1. Open EndedSuppose the angular separation of two stars is smaller than the angular resolution of your eyes. How will the stars appear to your eyes?
- 2. Open EndedWhat is a principal advantage of CCDs over photographic film?
- 3. Open EndedOrder the following in order of increasing efficiency of detecting photons of visible light
- 4. Open Endedwhat best describes the two principal advantages of telescopes over eyes?
- 5. Open EndedCurrently, the largest optical telescope mirrors have a diameter of
- 6. Open EndedWhat do we mean by the diffraction limit of a telescope?
- 7. Open EndedWhat could not be measured by an observation that uses only imaging?
- 8. Open EndedWhat could not be determined by an observation that uses only spectroscopy?
- 9. Open EndedWhat is meant by spectral resolution
- 10. Open EndedWhat studies is best suited to a time monitoring experiment?
- 11. Open EndedWhat is always true about images captured with X-ray telescopes?
- 12. Open EndedWhat do astronomers mean by light pollution?
- 13. Open EndedWhat causes stars to twinkle?
- 14. Open EndedWhat is the purpose of adaptive optics?
- 15. Open EndedWhat is an artificial star?
- 16. Open EndedWhat is not a good reason to place observatories on remote mountain tops?
- 17. Open EndedWhy do astronomers need different telescope designs to observe across the electromagnetic spectrum?
- 18. Open EndedWhat is not an advantage of the Hubble Space Telescope over ground-based telescopes?
- 19. Open EndedWhat wavelength regions cannot be studied with telescopes on the ground?
- 20. Open EndedTelescopes operating at this wavelength must be cooled to observe faint astronomical objects.
- 21. Open EndedAt which wavelength range is there no current or planned space observatory?
- 22. Open EndedIn what part of the electromagnetic spectrum do the biggest telescopes on Earth operate
- 23. Open EndedWhat does the technique of interferometry allow?
- 24. Open EndedThe largest effective telescope, created by radio interferometry, is the size of
- 25. Open EndedIn what wavelength range was interferometry first routinely used?
- 26. Open EndedA radio telescope and an optical telescope of the same size have the same angular resolution
- 27. Open EndedThe angular resolution of a telescope is never less than its diffraction limit
- 28. Open EndedA larger telescope will always have a higher spectral resolution than a smaller telescope when observing at the same wavelength.
- 29. Open Endedwhat best describes what we mean by the focal plane of a telescope?
- 30. Open EndedWhat does angular resolution measure?
- 31. Open EndedWhat is the angular resolution of the human eye?
- 32. Open EndedWhat is a CCD?
- 33. Open EndedWhat statement best describes the two principle advantages of telescopes over eyes?
- 34. Open EndedWhat best describes the difference between a refracting telescope and a reflecting telescope?
- 35. Open EndedWhat is not one of the three main categories of observation generally used by astronomers?
- 36. Open EndedSuppose you want to determine the chemical composition of a distant planet or star. What will be most useful to have?
- 37. Open Endedwhat is the purpose of adaptive optics?
- 38. Open EndedWhat wavelength regions can be studied with telescopes on the ground?
- 39. Open EndedWhat is the purpose of interferometry?
- 40. Open EndedSuppose you have two small photographs of the Moon. Although both look the same at small size, when you blow them up to poster size one of them still looks sharp while the other one becomes fuzzy (grainy) looking. What is a correct statement about the angular resolution?
- 41. Open EndedThe angular separation of two stars is 0.1 arcseconds and you photograph them with a telescope that has an angular resolution of 1 arcsecond. What will you see?
- 42. Open EndedSuppose you point your telescope at a distant object. Which of the following is not an advantage of taking a photograph of the object through the telescope as compared to just looking at the object through the telescope?
- 43. Open EndedHow does the light-collecting area of an 8-meter telescope compare to that of a 2-meter telescope?
- 44. Open EndedWhich of the following best describes why radio telescopes are generally much larger in size than telescopes designed to collect visible light?
- 45. Open EndedWhat study is best suited to astronomical observations that fall into the category called timing
- 46. Open EndedThe Chandra X-Ray Observatory must operate in space because
- 47. Open EndedWhich of the following telescopes would benefit most from adaptive optics?
- 48. Open Endedelectromagnetic spectrum-
- 49. Open Endedlong wavelengths-
- 50. Open Endedshort wavelengths-
- 51. Open Endedretina-
- 52. Open Endedrefraction-
- 53. Open Endedcharge-
- 54. Open Endedtwo most important properties of a telescope-
- 55. Open Endeda bigger telescope (larger opening for light)-
- 56. Open Endeda telescopes diameter tells us-
- 57. Open Endedlarger light collecting area allows-
- 58. Open Endedthe better the angular resolution-
- 59. Open Endeddiffraction limit-
- 60. Open Endedlarger diameter allows for-
- 61. Open Endedoptical telescopes for visible light-
- 62. Open Ended-refracting telescope-
- 63. Open Endedreflecting telescope-
- 64. Open Endeddescription of refracting telescope-
- 65. Open Endedmost modern telescopes are-
- 66. Open Endeddescription of a reflecting telescope-
- 67. Open EndedNasmyth/ coudè focus-
- 68. Open Endednewtonian focus-
- 69. Open Endedwhat do astronomers do with telescopes?
- 70. Open Endedvariable stars change brightness in-
- 71. Open Endedpulsar-
- 72. Open EndedExoplanet light curve-
- 73. Open Endedwhat can easily pass through Earth's atomosphere?
- 74. Open Endedwhy do we need telescopes in space?
- 75. Open Endedspitzer-
- 76. Open Endedwhy is focusing gamma rays difficult?
- 77. Open Endedinterferometery-
- Answer choicesTagsAnswer choicesTags