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what is redshift? a absorption bands are shifted toward the red end of the spectrum b sound waves are moving away from the observer c

Question

What is redshift? a Absorption bands are shifted toward the red end of the spectrum b Sound waves are moving away from the observer C Absorption bands are shifted toward the blue end of the spectrum d All of the above

Answer

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Dylan Veteran · Tutor for 10 years

Answer

a. Absorption bands are shifted toward the red end of the spectrum

Explanation

Redshift occurs when the wavelength of electromagnetic radiation from an object is increased (shifted toward the red part of the spectrum). This phenomenon is typically observed in the context of light from distant galaxies, indicating that they are moving away from us, consistent with an expanding universe. It is not related to sound waves or a shift toward the blue end of the spectrum.