1. What do you know about the Big Bang Theory? List anything 
Bellwork 11/6
What do you know about the Big Bang Theory? List anything 
This
…not this

2. Unit 3: Beyond our Solar System
Topics:
Big Bang Theory
Evidence of the BBT
Hubble’s Law/Red Shifting
Large Hadron Collider
Stellar Properties
Stellar Evolution
Nucleosynthesis
Black Holes/ Supernova
Galaxies
Fate of our Universe?

3. Article Discussion Go through each question with your group
On a whiteboard, outline your group’s answers to #’s 7 & 8
Be prepared to share these with the class

4. What is the Big Bang Theory?
marks the inception of the universe
Occurred about 14 billion years ago
All matter and space was created
This image is a misconception…

5. How did it happen??

6. Big Bang Theory Timeline
Take notes as we walk through the timeline of the Universe.

8. Time begins The universe begins ~13.7 Billion years ago
The universe begins as the size of a single atom
The universe began as a violent expansion
All matter and space were created from a single point of pure energy in an instant

9. Modern Physics 10x 10 -40 seconds after the Big Bang
Earliest point we can describe using modern physics
Gravity, Electromagnetic Forces, Strong Force (holds atoms together)
All of the matter in the Universe is created

10. Nuclei of Hydrogen & Helium Form
0.1 seconds after the Big Bang
Protons and Neutrons begin to form
Too hot for electrons to bind
“+” and “– “ particles bind to form a plasma
Absorbs electromagnetic radiation

11. Atoms Form ~ 3 minutes after Big Bang E=mc2
energy froze into matter according to Albert Einstein’s equation.
This basically says that like snowflakes freezing, energy forms matter into clumps that today we call protons, neutrons and electrons.
These parts form into atoms
Universe becomes transparent

12. ~200 to 400 million years after Big Bang
1st stars and galaxies form
End of the “Dark Ages”

13. Heavier Elements ~1 billion years after Big Bang
Stars began to die and collapse in on themselves
Generates immense temperature & pressure…which leads to heavier elements (more protons & neutrons)

14. Our Sun and Solar System
~4.6 billion years after Big Bang
Sun forms from remains of supernova
Nebular Hypothesis

15. Earliest Life ~12 billion years after the Big Bang
VERY simple life forms
Archaea

16. Misconceptions about the Big Bang
there was no explosion; there was (and continues to be) an expansion
Rather than imagining a balloon popping and releasing its contents, imagine a balloon expanding: an infinitesimally small balloon expanding to the size of our current universe
we tend to image the singularity as a little fireball appearing somewhere in space
space began inside of the singularity. Prior to the singularity, nothing existed, not space, time, matter, or energy - nothing.

17. “How the Universe Works: Big Bang” Exit Slip
On one side of your notecard:
Questions you have during the video
On the other side of your notecard:
Topics that interest you or that you want to know more about
Please, come up with at least 2 items on each side

18. Basic Elements Form 3 minutes after the Big Bang Hydrogen & Helium
Still make up most of the Universe
Strong evidence for the Big Bang
At this point, the Universe is already incomprehensibly large…
Think back to our Scale of the Universe activity

19. Stars and Galaxies are formed
1 billion years after the Big Bang
Pockets of dense gas form