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Star Life Cycle Poster

Period 6 Science
by

Shane Martin

on 22 May 2014

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Transcript of Star Life Cycle Poster



An
interstellar
cloud
of dust, hydrogen,
helium, and other
ionized gases.
Nebula
Protostar
A contracting nebula
with enough mass to
form a star.
The nebula
begins to
contract.
The protostar
gathers it's
mass into a
sphere and
hydrogen
begins burning.
Main Sequence Star
Stars that are
fusing hydrogen
atoms to form
helium atoms in
their cores.
Red Giant
A very large
star with high
luminosity and
low surface
temperature.
When hydrogen runs out, the star begins to collapse in on itself. This brings in additional hydrogen, and fusion continues around the core. This increases the star's luminosity and the outer layer begins to expand.
Planetary Nebula
A ring-shaped nebula formed
by an expanding shell of gas
around an aging star.
White Dwarf
A small, very
dense star
that is
typically
the size of
a planet.
Remaining is the
core of a red
giant, after the
rest blew up into
a planetary nebula.
When it cools down enough,
it will no longer be visible.
Black Dwarf
A white dwarf that
has cooled enough
that it no longer
emits light.
In a binary system,
a white dwarf can
siphon fuel from
another star.
When a white dwarf
re-ignites and causes
a supernova explosion.
1A Super
nova
Red Supergiant
Same process as red
giant, but the star
has to be much larger
in it's mass.
2a Supernova
Rapid collapse and
violent explosion of
a massive star.
When the fuel runs out,
the star will collapse
and create a supernova.
The largest
stars in the
universe by
volume.
A type of stellar
remnant that can
result from the
gravitational collapse
of a massive star.
Neutron Star
All mass is
squeezed into
a sphere.
If the mass is less
than 10 times the
sun, the remnants
of the supernova
form into a neutron
star.
Black Hole
A region of space having a gravitational field so intense that no matter or radiation can escape.
Pulsar
A highly magnetized, rotating
neutron star that emits a beam
of electromagnetic radiation.
When a neutron star produces
radio bursts that we can
detect, it is classified
as a pulsar.
When the gravity is strong enough
after a supernova that the escape
velocity is stronger than the
speed of light, a black hole is formed. The star has to be
around 20 times bigger than the
sun.
Shane Martin

Star Life Cycle

The star collapses on
itself, throwing pieces
outwards.
Full transcript