If an absorption line has a longer wavelength in the spectrum of a galaxy

If an absorption line has a longer wavelength in the spectrum of a galaxy

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1. FIRST ANSWER IS THE CORRECT ANSWER 1. If an absorption line has a longer wavelength in the spectrum of a galaxy 2. than it does in the laboratory, that galaxy has a 3. (1) positive radial velocity ("redshift") 4. (2) negative radial velocity ("blueshift") 5. (3) negative tangential velocity ("redshift") 6. (4) NVA 7. (5) NVA 8. 9. 10. 11. If the emission lines in the spectrum of a source are shifted to shorter 12. wavelengths the source has a 13. (1) negative radial velocity 14. (2) positive radial velocity 15. (3) positive space velocity 16. (4) NVA 17. (5) NVA 18. 19. Sect. 5.3 20. The type of telescope that has a glass lens (actually several pieces fitted 21. together) as its main light-collecting element is the 22. (1) refractor (2) reflector
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Unformatted text preview: (3) NVA 23. (4) NVA (5) NVA 24. 25. 26. 27. The type of telescope that has a mirror or combination of mirrors as its 28. light-collecting element is the 29. (1) reflector (2) refractor (3) NVA 30. (4) NVA (5) NVA 31. 32. 33. 34. All professional telescopes today are 35. (1) reflectors, because they can be built with larger diameter 36. (2) refractors, because they can be built with larger diameter 37. (3) refractors, because they can be built with larger focal length 38. (4) NVA 39. (5) NVA 40. 41. 42. 43. The light-collecting power of a telescope 44. (1) gets better as the diameter increases 45. (2) gets better as the focal length increases 46. (3) gets better as the wavelength increases 47. (4) NVA 48. (5) NVA...
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If an absorption line has a longer wavelength in the spectrum of a galaxy

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