1. What does a stars color depend on? It’s temperature
What color are the hottest stars? Blue
What does the H-R Diagram show about a star? The temperature and absolute magnitude
What is formed from the materials in the core of a supernova? Black holes and neutron stars
What is a stars life cycle from earliest to oldest? Main sequence, red giant, white dwarf

2. Where are globular clusters found? Spiral and slliptical galaxies
Where are open clusters found? Along the spiral disks of galaxies
Why are distant galaxies studied? To learn what early galaxies looked like
What do scientists think will happen to the universe? It will continue expanding
What type of galaxy is the Milky Way? Spiral
What are the three major types of galaxies? Spiral, elliptical, and irregular

3. What type of star has used all of its hydrogen and is the leftover center of an older star? White dwarf
What holds a galaxy together? Gravity
How do astronomers classify galaxies? According to their shape
The H-R Diagram graphs what two things? A stars temperature and brightness
What is a nebula? A large cloud of dust and gas

4. What is a white dwarf? The former center of an old star
What is a supernova? A huge explosion where a large star dies
What is a black hole? A huge object that light cannot escape from
What is a pulsar star? A spinning neutron star that gives off pulses of energy