Star Life Cycles
What is the birthplace of stars?
Nebula
What is the difference between emission and absorption spectra?
Emission shows bright lines, absorption shows dark lines
What two properties does the H-R diagram plot?
Temperture and luminosity
What are stars primarily made of?
Hydrogen and helium
What phase follows the main sequence for most stars?
Red giant
What does each spectral line correspond to?
A specific element
Where are most stars located on the H-R Diagram
Main sequence
What process creates havier elements in stars?
Nuclear fusion
What determines a star's final stage?
Its initial mass
What tool do scientists use to study a star's spectra?
Spectroscope
What type of stars are large but cool?
Giants and supergiants
What element is produced when hydrogen fuses?
Helium
Name one possible end stage for a star.
White dwarf, neutron star, or black hole
What color might indicate hydrogen in a star's spectrum?
Red (H-alphna line)
Where would you find white dwarfs on the H-R diagram?
Bottom left
How can we indentify elements in stars from Eart?
By analyzing their spectra
What powers stars during their main sequence?
Nuclear fusion
How can spectra tell us what elemenct are in a star?
By matching spectral lines to know elements
What does a star's position on the diagram tell us?
Its life stage and type
Which element is fuel for most of a star's life?
Hydrogen