1. What is a blackbody? What does it mean to say that a star appears almost like a blackbody? If stars appear to be like blackbodies, why are they not black? 2. What is the Stefan-Boltzmann law? How...

1. What is a blackbody? What does it mean to say that a star appears almost like a blackbody? If stars appear to be like blackbodies, why are they not black?

2. What is the Stefan-Boltzmann law? How do astronomers use it?

3. Using Wien’s law and the Stefan-Boltzmann law, explain the changes in color and intensity that are observed as the temperature of a hot, glowing object increases.