Stars Quiz
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5 questions, one answer each
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1. Which of the following best describes what a light-year measures?
- A. The distance light travels through space in one year
- B. The time it takes light to travel from the Sun to Earth
- C. The age of a star measured in years
- D. The distance between Earth and the nearest star
2. The Sun is located in which galaxy?
- A. The Andromeda Galaxy
- B. The Milky Way
- C. The Sombrero Galaxy
- D. The Triangulum Galaxy
3. A protostar becomes a stable star when which condition is met?
- A. It reaches a temperature of exactly 10 million Kelvin
- B. Gravitational attraction balances the outward force from high central temperature
- C. It consumes all the hydrogen in the surrounding nebula
- D. It ejects all of its outer layers into space
4. What is the correct sequence in the life cycle of a less massive star like our Sun?
- A. Main sequence star → red supergiant → supernova → black hole
- B. Protostar → main sequence star → red giant → planetary nebula and white dwarf
- C. Interstellar cloud → red giant → neutron star → black hole
- D. Protostar → supernova → red giant → neutron star
5. A supernova explosion from a red supergiant produces two important outcomes for the universe. Which pair correctly identifies both of these outcomes?
- A. A planetary nebula is formed and a white dwarf is left behind
- B. A new main sequence star forms and a red giant eventually develops
- C. A nebula containing hydrogen and heavier elements is formed, leaving behind either a neutron star or black hole
- D. All hydrogen in the surrounding region is converted into helium and a protostar immediately forms