Death of
sun-like
Massive
star death
Elemental
my dear
Watson
Novas
Neutron
Stars
Black holes
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Black dwarfs
What are cooled off white
dwarfs?
$400
Planetary nebula
What is the ejected envelope,
often bipolar, of a red giant
surrounding a white dwarf
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No. It is a small mass star
Will our sun become a
supernova? Why or Why
not?
$800
Main sequence, giant, planetary nebula,
white dwarf
The order of the end of a sunlike
star is:
$1000
Helium build up in the core (less hydrogen in the
core) and hydrogen burning shell expands
What forces the evolution of a star off the main
sequence?
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once
How many times can a star be
a supernova?
$400
It takes energy to fuse iron.
An iron core cannot
support a star because
$600
It generates more heat and eventually
collapses on itself
A high-mass star dies more
violently because?
$800
During core collapse of a
Type II supernova
The heaviest nuclei are formed during
what event
$1000
At 8 solar masses a star will go through a
violent ending, forming a Type II supernova
and ending in a nuetron star or balck hole
Why is the 8 solar masses significant in
stellar evolution?
$200
Hydrogen
What is the element first
fused to form stars?
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Hydrogen and helium
Nearly all the elements found
in nature were formed inside
stars, except for
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nucleosynthesis
The formation of heavier
elements inside stars is called
$800
Once hydrogen is depleted it can no longer
fuse hydrogen into helium. With no energy
source to cause outware pressure the gravity
is able to collapse the core and change the
star’s structure.
Why is the depletion of
hydrogen important?
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1. As a result of these, lighter elements are
transformed into heavier elements. 2. shock
waves can trigger star formation from
supernova 3. they both have high mass stars.
They both have ionized hydrogen.
How are Type II supernovae
and star forming regions
related? (name 3 reasons)
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Novas
A surface explosion on a white dwarf,
caused by falling matter from the
atmosphere of its binary companion,
creates what kind of object?
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Nope
Can a white dwarf and it’s
companion star have multiple
Type I supernovas?
$600
Type I supernova
If a white dwarf gains enough
mass it can become a
$800
Type II Supernova
The making of abundant iron
nuclei is typical of
$1000
The sun is neither a binary star nor
is it large enough to cause a
supernova
Can our sun cause a
supernova? Why?
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A young neutron star
A star that has very rapid
rotation and a strong
magnetic field is
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Neutron star
An object more massive than
the sun but no larger than a
city is a
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Pulsars
These objects spin very
rapidly when they are young
$800
The Lighthouse model
The name of the model where we see a
beam sweep across us in a pulsar is called
$1000
Jocelyn Bell
Whose work with SETI led to
the discovery of pulsars in
1967?
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Black hole
A “failed” supernova undergoes
core collapse but instead of
forming a neutron star like a Type
II supernova it forms a black hole.
A hypernova ends up as a
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Theory of Relativity
Gravity is the result of curved
space is an explanation of what
theory?
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In the middle of galaxies
The largest supermassive black
holes are found________________.
$800
Time slows down
As an object nears and event
horizon what happens to time?
$1000
Before the person enters the black hole,
tidal forces would pull him or her apart.
What would happen to someone falling into a stellar
sized black hole