H-R Diagram
This star is located near spectral class G and has a luminosity of about 1.
What is the Sun?
This is the stage in which a star is forming from material in a star-forming nebula.
What is a protostar?
This process occurs when smaller atomic nuclei combine to form a heavier nucleus.
What is nuclear fusion?
This element is shown as being produced during the main sequence stage of a Sun-like star.
What is helium?
Scientists use spectral patterns on this to identify these substances in stars.
Stars in this spectral class are generally red in color.
What are M-type stars?
In the life cycle of a Sun-like star, this is the stage that occurs last.
What is a white dwarf?
This factor increases as the mass of a star increases, accelerating nuclear fusion.
What is gravity?
Pick a different one.
We must learn more about elements.
The Sun is mostly made of these two elements.
What is hydrogen and helium?
This factor also increases as mass increases.
What is luminosity/brightness/magnitude?
After a massive star becomes a red supergiant, it can eventually become one of these two objects. (Must list both)
What are a neutron star and a black hole?
Sun has been producing energy for approximately 5 billion years and is expected to continue for approximately this many more years.
What is 5 billion years?
Pick a different one.
We must learn more about elements.
Looking at the Sun's spectral patterns on 3 different occasions in main sequence, the conclusion you come to is this.
What is the patterns are identical?
On the H-R diagram, as you move from spectral class O toward spectral class M, this happens to the surface temperature of the stars.
What is the surface temperature decreases?
This is how long low mass stars live for.
What is 100s of billions of years?
This is the size a star must be to go supernova. (In solar masses)
What is 8-10 solar masses?
These are the atoms that fuse together in nuclear fusion.
What is hydrogen?
This is how scientists analyze spectra signatures.
What is matching absorption lines?
This star stage typically has a surface temperature of about 3500 K, appears red or orange-red, and has a very high luminosity.
What is a red giant or red supergiant?
This property of a star determines which pathway it goes through and strongly affects how long the star will live.
What is mass?
As a star progresses through different stages of its life, the type of elements it produces can change because the conditions inside the core of a star changes, including this important factor.
What is core temperature?
This is how heavier elements than Iron are produced from a star.
What is a supernova?
This is the reason scientists use spectroscopy while studying stars.
What is finding the composition of stars?