Transcript Introduction to the Big Bang Theory

Introduction to the
Big Bang Theory
The Origin of the Universe
You walk into a theater, on the screen,
you see car parts flying away in all
directions . . .
What just happened?
State your observation.________________________________
________________________________________________
________________________________________________
State your hypothesis.________________________________
________________________________________________
________________________________________________
Give your evidence for your hypothesis.__________________
________________________________________________
________________________________________________
Can you make a statement about an event even though you
didn’t witness it happening?______________________
Play the movie backwards
• If you could play the movie backwards, what would the
objects be doing?_______________________________
_____________________________________________
_____________________________________________
_____________________________________________
• Following that thought back to the very
beginning…what was originally on screen?__________
_____________________________________________
_____________________________________________
_____________________________________________
Edwin Hubble
(1889-1953)
Astronomer who made several discoveries that
provided clues for how our universe began:
1.
___________________________________ are “building blocks” of
the universe.
- __________________________________: All existing matter,
energy & space
2.
The Milky Way (Earth’s galaxy) was 1 galaxy among billions of
others.
- __________________________________: Is made up of a
cluster of _________________________ (solar systems).
There are __________________________________ of
galaxies within the universe.
3.
The galaxies are __________________________________________
___________________________________ from each other.
The Big Bang Theory
– A ______________________________
________________________ that states that the
_____________________________ was created
from a high density of
__________________________ (called a
“_____________________________”) that
_______________________________ at very
______________ temperatures, shooting
____________________________ &
____________________________ everywhere.
Eventually, the matter began to
____________________ off & formed various
____________________________.
Formation of the Universe
One Scientific Theory – “__________
_____________
_______________”
All _________________________________ &
_________________________________ in the universe was
concentrated in an __________________________________
__________________________ volume
_________________________________________ years ago,
the _________________________________________ occurred,
propelling matter & energy in all directions
universe
_________________________________
________________________________ condensed (clumped)
matter
__________________________________
Many questions remain about the beginning of the universe
Hubble’s Logic
• For the galaxies to expand, they must have been
____________________________________ in history.
• Hubble concluded that there must be an infinitely
_________________________________, infinitely
_______________________ starting point that contained all the
matter in the universe.
– Called a ____________________________________.
• An enormous ___________________________________ set things
in __________________________.
How does Hubble’s logic compare to yours about the car crash scene
in the movie?
_______________________________________________________
_______________________________________________________
_______________________________________________________
But how did Hubble conclude these
things (right or wrong) about our
universe?
• What did he study?
– _____________________________
_____________________________
_____________________________
_____________________________
The Heartbeat of a Star
• What are stars made of?
• What process is the
“heartbeat” of a star?
– When this process
begins, a star is born,
& when this process
stops, a star dies…
Nuclear Fusion
A ____________________ is born when
_____________________________ begins in the star’s
_______________________ (center)
______ + ______  ______
___________________________ is a reaction that combines
_____ ______________________ nuclei (atom) to form
____________________________ nuclei (atom)
The result is the release of a large amount of
____________________________
Nuclear Fusion

What are the _____ ________________________________
(outcomes) of nuclear fusion?

__________________________________ nuclei (atom)

LOTS of _____________________________!