Stars
Stars begin in a cloud of gas and dust called this.
What is a nebula?
Huge, explosions of the Sun's atmosphere are called these.
What are Coronal Mass Ejections?
The type of galaxy we are in.
What is a spiral galaxy?
This is the theory that the universe is expanding from a central point.
What is the Big Bang theory?
The method used to measure the distance of stars close to Earth by viewing the star from Earth's location at one time during the year and then six months later.
What is parallax?
This stage occurs when the core of a star has fused all of its hydrogen into helium.
What is a red giant?
It's the bright layer of the sun that we see.
What is the photosphere?
A type of galaxy with older stars that is shaped like a flattened circle.
What is elliptical galaxy?
This is the "effect" used to determine the motion of stars and galaxies (or police cars).
What is the Doppler effect?
The most common elements in which stars are composed of.
What are hydrogen and helium?
The one factor that determines the outcome of a star's life cycle.
What is starting mass?
Temporary regions in the Sun's surface that are cool.
What are sunspots?
This is the name of the galaxy in which our star belongs.
What is Milky Way galaxy?
This is the shift that shows the universe is expanding.
What is the Red Shift?
This iis the actual brightness of a star.
What is luminosity?
The joining of two nuclei of hydrogen atoms to form helium with extreme amounts of energy being released.
What is nuclear fusion?
The layer of the Sun next to the corona.
What is the chromosphere?
This is at the center of our galaxy.
What is a black hole?
This color of star is the coolest.
What are red stars?
The unit used to measure the distance between stars.
What is a light year?
This diagram shows the relationship between luminosity, temperature, and size.
What is relationship shown on the H-R diagram for main sequence stars?
This is the name given to the electrically charged particles flowing from the sun that cause Auroras.
What is solar wind?
Our galaxy is a part of many other galaxies in our cluster called this.
What is the Local Group?
It's what H-R stands for in an "H-R" Diagram.
What is Hertzprung-Russell?