astronomy 3a

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Using the Spectral Analysis document as a reference, answer the following questions.

  1. What kind of spectra are those in Group A? What kind are Group B?
  2. Explain what physical phenomenon might produce spectra like Group A, and what different phenomenon would produce spectra like Group B.
  3. There is a third type of spectrum. Name it, and explain what causes that kind.
  4. Notice that the solar spectrum in Group B has a line labeled “1,” a set of lines labeled “2,” and a line labeled “3.” Referring back to Group A, identify the element that corresponds to each of these sets of lines (a different element for each set).
  5. Using the sun as a reference point for the “normal” positions for spectral lines, identify whether each of the other spectra in Group B is red-shifted or blue-shifted.

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