quiz

Redshift and Blueshift

1. What does redshift in astronomy indicate?

  • A) The presence of a massive object in space
  • B) The motion of an object towards an observer
  • C) The motion of an object away from an observer
  • D) The emission of light by an object in space
C) The motion of an object away from an observer Explanation

2. Which scientist’s observations of redshift led to the discovery of the expanding universe?

  • A) Albert Einstein
  • B) Galileo Galilei
  • C) Edwin Hubble
  • D) Isaac Newton
C) Edwin Hubble Explanation

3. In which part of the electromagnetic spectrum do redshift and blueshift occur?

  • A) Gamma rays
  • B) X-rays
  • C) Infrared light
  • D) All of the above
D) All of the above Explanation

4. Which of the following astronomical objects typically exhibits a blueshift?

  • A) Distant galaxies receding from Earth
  • B) The Andromeda Galaxy moving toward the Milky Way
  • C) Cosmic microwave background radiation
  • D) Stars in a distant galaxy moving away from Earth
B) The Andromeda Galaxy moving toward the Milky Way Explanation

5. Who first proposed the concept that explains redshift and blueshift?

  • A) Edwin Hubble
  • B) Albert Einstein
  • C) Christian Doppler
  • D) Isaac Newton
C) Christian Doppler Explanation

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