Discuss each question with your team. Be prepared to explain the reasoning behind your team's answers after the quiz.
- Which star is hottest?
- a G5 main sequence star
- a K2 supergiant
- an F3 main sequence star
- an F8 horizontal branch giant
- There are two G2 V stars. One is 9 times as bright as the other. What’s the distance to the dimmer star with respect to the brighter star?
- 3 times closer
- 9 times closer
- 3 times further away
- 9 times further away
- What does a color index of B-V = -0.11 mean for a star?
- The star is more blue than red, so it is a hot star
- The star is more blue than red, so it is a cool star
- The star is more red than blue, so it is a hot star
- The star is more red than blue, so it is a cool star
- When a main sequence star becomes a red giant, it _________
- increases in temperature and luminosity
- decreases in temperature and luminosity
- increases in temperature and decreases in luminosity
- decreases in temperature and increases in luminosity
- Which star would look brightest from Earth?
- a star 100 parsecs away with an absolute magnitude of 5
- a star 900 parsecs away with an apparent magnitude of 3
- a star 1200 parsecs away with an apparent magnitude of 4
- a star 10 parsecs away with an absolute magnitude of 8
