Origin of the Universe Lecture: Part 1 Universe

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Transcript Origin of the Universe Lecture: Part 1 Universe

Origin of the Universe Lecture:
Part 1 Universe
________________: the study of
the universe and our place in it.
• The moment when all
were formed in a cosmic
explosion is called the
• occurred _________
• generated
__________that went
flying out into space along
with energy
• Quarks came together to
form the smallest atoms
(hydrogen and helium).
• Quarks __________
(came together) to
form ________,
________, ________
subatomic particles
– _________________
are used to study
quarks and what
happened in the Big
– Bombard subatomic
particles w/ other
subatomic particles
and look @ what gets
ejected as they collide
• Even today when we listen in space we hear a hiss indicating the presence
of _____________________ still radiating since the Big Bang.
• A process that started
when the universe
formed and
continues today.
Expansion video
• We can see evidence
of this in something
called ________.
Red Shift/Blue Shift
• As an object moves
away from the
observer there is an
___________ in the
wavelength of any
light emitted.
• As an object moves
towards the observer
there is an decrease
in the wavelength of
any light emitted.
We can also hear this phenomenon (the Doppler Effect) in sound waves.
• The Big Bang made • The largest clumps
quarks, those ______
get hot and dense
coalesced to form
enough to start a
atoms of __and ___.
fusion reaction.
• Those atoms
• ________ reaction:
clumped together
two smaller atoms
and the clumps grow
combine to make a
as a result of ______.
larger atom.
A Star is Born!
• Stars are powered by • When all the
_____ ___________.
_________ in a star
is used up, large stars
• Origin of our solar
will collapse in on
• These fusion
reactions start out
• like He and Li.
• An exploding star!
• When the star runs
out of any smaller
• When all the
elements to fuse it
hydrogen is gone and
explodes out and all
the star is imploding
the rest of the
there is enough heat
elements after iron
and pressure for
are formed.
elements (up to iron)
to form.
• Gravity pulls atoms
back together
forming _____
______ and
sometimes planets
like ours.
• These new objects
have a mix of all
sorts of elements.
• “We are all stardust”
– All the atoms that
make us and
everything else we
have around us were
made in ancient stars
that exploded as
Evidence for the Big Bang
1. Background hiss of ___________
2. Hydrogen is the simplest and most
______________ element in the
universe followed by He
3. ______ _____: the universe is expanding
4. Stars and supernovae repeat patterns