stars and constellations
magnitude
A stars brightness.
low
Are the brightest stars low magnitude or high magnitude?
red
What color is the coolest star?
sirius
What is the brightest star in the known universe?
the temp of a star.
Stars are identified by their color; what does the color indicate?
Nebulae
Stars begin their lives as clouds of dust and gas called.
What is a white dwarf?
is the core that remains behind. The cores are from the planetary nebula.
What is a planetary nebula?
is when average stars blow away their outer atmosphere and form
What is a red giant?
large star that has a reddish orange color.
Prostar
matter in a gas cloud that begins to coalesce (join) into a dense region called.
Why do some stars become super red giants?
size.
What is a white dwarf?
smaller average sized star that passed through the red giant stage of its life.
What produces all of the heavy elements required for life?
star stuff. Either in the nuclear furnace of the star or in the cataclysmic explosion of supernovas.
When will a star become a red giant?
star's fuel starts to run out. It will expand.
What will happen when a star exhausts its remaining fuel?
the star will collapse.
blue
what color is the hottest star?
white
what is the color of the sun
How do astronomers rate the magnitude of a star?
with a scale that gives the stars that are brighter a a low number and a dim star a higher number.
Is our sun a main sequence star?
yes
nuclear fusion
It begins when the prostar keeps coalescing and heats up then when it reaches its critical masses. T
What will decide the amount of time a star spends in the main sequence phase?
Mass
slower
The life span of smaller stars are much
faster
Very large, massive stars burn their fuel
What does the main sequence represent?
a point in the star's evolution.
Constellations
alignments of stars.
The lifespan of a star depends on
depends on its size.
