Star Vocabulary
Remains of low and medium mass stars with densities greater than anything on Earth are called
White Dwarfs
Where are stars born
Nebula
What phase is a star in when it is unable to get hot enough for nuclear fusion
What is the typical life time of a yellow star the size of our Sun
10 Billion Years
The first stage of a Medium Mass Star made up of mostly gas and dust
A Nebula
Remnants of a Supernova that are smaller and more massive than white dwarfs are called
Neutron Stars
What is the approximate temperature is the core of a star when it is born?
10 million Kelvin
What is the name of the stage of a star during its lifetime
Main-Sequence
How long will our Sun be in a Red Giant stage
Less than 1 Billion Years
Stage when all of the gas and dust are brought together by gravity
Protostar
A source of radio pulse emissions over regular periods are called
Pulsars
After a star burns all of its Hydrogen, it starts to burn
Helium
What is an exploding star that increases brightness many thousands of times
Supernova
How far is the Sun from the Earth?
150 Million km or 1 AU
Stage when a star is burning Hydrogen. It's the life term of a star.
Main-Sequence
A massive star that has collapsed to such a small volume that its gravity prevents the escape of light is called a
Black Hole
A Hertzsprung-Russell (H-R) diagram shows the relationship between
temperature and absolute magnitude
What phase is a star in when it is unable to get hot enough for nuclear fusion
Protostar
How old is the Sun?
4.6 Billion Years
Phase when a star is out of Hydrogen and Helium, it collapses and becomes
A Planetary Nebula
How bright a star appears from Earth is called its
Magnitude
Which of the following refers to the change in wavelength that occurs when an object moves toward or away from a source?
Doppler Effect
When Medium Mass Stars collapse and die, they become a
Planetary Nebula
What is the diameter of the Sun?
865,370 miles
The hot core remains of a Medium Mass Star
White Dwarf