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Life Cycle of a Star

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Caitlyn Leahy

on 28 September 2012

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Transcript of Life Cycle of a Star

Life Cycle of a Star by Caitlyn Leahy and Tina Zhang White Dwarf Supernova Black Holes So strong that nothing can escape it even light
Formed when star come to the end of their lifetime
can be big or small
can not be seen because the gravity absorbs all the light
has more than 3 times the mass of our sun Explosion in which star collapses.
stars explodes because they ran out of fuel medium mass stars turn into a red giant
forms when star come near to the end of its life time
a star with a mass like our sun
called red giant because of its size
burns up their fuel a lot faster
center of star shrinks when it losses hydrogen
grows very large and cools Median mass stars
three types of life cycle according to their mass.
Low mass star turn into red dwarf
medium mass star turn into red giants
high mass star turn into super giant Star 2nd stage also the longest stage
location on H-R diagram where most stars lie
where our sun currently is
energy is generated in the core of the star
hydrogen atoms fuse into helium atoms
changes very little
aslo called dwarf star Main Sequence shows relationship between star's surface temperature and absolute magnitude
Scatter graph
shows how the star changes through out its life
Family portrait for stars H-R Diagram When stars like our own sun dies, it becomes a white dwarf
Left over center of an old star
bigger than the earth
can not generate energy
has no hydrogen left
can shine for billion of years before they cool all the way REflection Nebula one of the possible ends for a star
happens when star collapse so much that electron and proton combine to form neutron
when it is spinning it is called a pulsar Neutron Star low mass stars changes into a red dwarf when it is near the end of its life time.
smaller than our sun
small and makes very little light
burns fuel really slowly because of size
not really hot
most common stars low mass stars turns into super giant
uses up its fuel to become a super giant
consume their fuel much more than any other smaller mass stars
much bigger then the red giant star
comes in different colors High mass stars URL Interesting Facts http://www.kidsastronomy.com/stars/red_dwarf_star.html
red giant
http://www.windows2universe.org/the_universe/WD.html All stars are born out of nebula
huge cloud of dust and Gas
means cloud
Once nuclear fission begins, its born
Lots of kinds of nebula
Located in the milky way
star is born after reaching 10 million Celsius Nebula/Birth Every thing is a theory in this prezi.
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