Phases of a star
What are all the stages in a stars life in order?
1. Forms in a nebula 2. Main sequence star 3. Giant or a supergiant 4. White dwarf or a supernova/neutron star/black hole
is the total energy a star gives off each second, the brightness
luminosity
The _____ is the last stage in a low-mass star’s life when it no longer emits heat or light.
white dwarf
What does the H-R diagram measure?
luminosity and temperature
What is the order of the Sun’s internal layers from the innermost to the outermost?
Core → Radiative Zone → Convective Zone → Photosphere
Which elements make up an interstellar medium?
hydrogen
carbon
silicon
is how bright a star looks from Earth.
apparent brightness
Which star color represents the hottest surface temperature?
blue
Which layer of the Sun is only visible during a total solar eclipse as a glowing halo?
corona
Inside a nebula are regions where gravity pulls gas and dust together into a
What is a solar flare?
dark spot on the suns surface
name the step of a low mass star after main sequence
red giant
When stars are on the left side of the diagram are they hot or cold?
hot
stars spend most of their life in which phase?
under what mass condition would a star experience a super nova
high mass
convection is on the outside, radiative radiates from the core
The ____ of a star determines what happens when it leaves main sequence.
mass
when a star is born, this nuclear process begins
when would a star go into a black hole
after super nova
in a high mass star
18. Arrange the star colors from coolest to hottest:
A) Red → Yellow → White → Blue
Nuclear fusion only occurs in the core
true