1. Magnitude of a Star
How bright it is

2. Apparent Magnitude: How Bright the Star appears to be.
Absolute Magnitude:
How Bright a star actually is.
Apparent Magnitude: How Bright the Star appears to be.

3. 1.3 Million Earth’s would fit inside the Sun

7. 1. Describe the relationship between color and temperature.
H – R Diagram Questions
1. Describe the relationship between color and temperature.
2. Describe the relationship between size and brightness.
3. What do Bernard’s star, Sun, and Sirius have in common?
4. What do Sirius B and Procyon B have in common?
5. List the 4 brightest stars, what do they all have in common?
6. List the 3 hottest stars, what do they all have in common?