topic: em spectrum (see board for relevant reference table)\nassume a telescope measures a wavelength of…

topic: em spectrum (see board for relevant reference table)\nassume a telescope measures a wavelength of light that is in the \blue\ wavelength. as a galaxy moves closer, what color should that approach? (1 point)\nthe following emission spectra was identified in a galaxy moving away. which element is most likely represented with this emission spectra? (1 point)\nas the galaxy continues to move away, draw what would happen to the line emission spectra. (1 point)\n410 nm 434 nm 486 nm 656 nm\nc - big bang:

topic: em spectrum (see board for relevant reference table)\nassume a telescope measures a wavelength of light that is in the \blue\ wavelength. as a galaxy moves closer, what color should that approach? (1 point)\nthe following emission spectra was identified in a galaxy moving away. which element is most likely represented with this emission spectra? (1 point)\nas the galaxy continues to move away, draw what would happen to the line emission spectra. (1 point)\n410 nm 434 nm 486 nm 656 nm\nc - big bang:

Answer

Explanation:

Step1: Understand Doppler - effect in light

When a galaxy moves closer, there is a blueshift. The color should approach violet as it has a shorter wavelength than blue in the visible spectrum.

Step2: Identify element from emission spectra

Without the reference table on the board, we can't accurately identify the element. But if we consider common elements, hydrogen has emission lines at 410 nm (H - alpha), 434 nm (H - beta), 486 nm (H - gamma) and 656 nm (H - delta). So it could be hydrogen.

Step3: Effect on emission spectra as galaxy moves away

As the galaxy moves away, there is a redshift. The emission lines will shift towards the longer - wavelength (red) end of the spectrum.

Answer:

  1. Violet
  2. Hydrogen (most likely, assuming common elements and given wavelengths)
  3. The emission lines will shift towards the red end of the spectrum.