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3. the wavelengths of the light from galaxies that are further away fro…

Question

  1. the wavelengths of the light from galaxies that are further away from the earth are more (bold one: compressed or expanded ). 4. the wavelengths of the light from galaxies that are closer to the earth are more (bold one: compressed or expanded ).

Explanation:

Brief Explanations

According to the Doppler - effect in astronomy, when a galaxy is moving away from the Earth (more distant galaxies), the light it emits experiences redshift, which means the wavelengths are expanded. When a galaxy is moving towards the Earth (closer galaxies), the light experiences blueshift, which means the wavelengths are compressed.

Answer:

  1. expanded
  2. compressed