1. Introduction to the Big Bang Theory
The Origin of the Universe

2. You walk into a theater, on the screen, you see car parts flying away in all directions . . .

3. 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?______________________

4. 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?__________ _______________________________________________________________________________________________________________________________________

5. Edwin Hubble ( )
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
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.
The galaxies are __________________________________________ ___________________________________ from each other.

6. 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 ____________________________.

7. 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
“__________
_____________
_______________”

8. 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? _____________________________________________________________________________________________________________________________________________________________________

9. But how did Hubble conclude these things (right or wrong) about our universe?
What did he study?
____________________________________________________________________________________________________________________

10. 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…

11. Nuclear Fusion
A ____________________ is born when _____________________________ begins in the star’s _______________________ (center)
______ + ______ à ______
___________________________ is a reaction that combines _____ ______________________ nuclei (atom) to form ____________________________ nuclei (atom)
The result is the release of a large amount of ____________________________

12. Nuclear Fusion
What are the _____ ________________________________ (outcomes) of nuclear fusion?
__________________________________ nuclei (atom)
LOTS of _____________________________!