Consider the four spectra below. The spectrum labeled A is an absorption line sp

Question

Consider the four spectra below. The spectrum labeled A is an absorption line spectrum from a star that is at rest. Which stars are coming toward us? Which are moving away? Which star is moving faster relative to us (either toward or away from)? Explain your answers.

1. Consider the four spectra below. The spectrum labeled A is an absorption line spectrum from a star that is at rest. Which stars are coming toward us? Which are moving away? Which star is moving faster relative to us (either toward or away from)? Explain your answers. Blue Red

Explanation / Answer

Star B is moving fastest and directed away fromthe observer because the obsortion lines are shiffted by the largest mount and shifted to longer wavelengths.

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