1. The Universe and its Origin!

2. Science Starter – Standard 1.1
Create a KWL chart in your science starter section about “The Universe”
KNOW
WANT TO KNOW
LEARNED

3. Agenda Science Starter Intro to the Universe and its Origin
Independent Activity

4. Objective
SWBAT identify theories and events that contribute to the origin of the Universe

5. WELCOME TO UNIT 1! THE UNIVERSE Our first unit will focus on…
Why study it?
Topics in this unit include: origins of the universe, the solar system, planets, sun, moon, and stars

6. NOTES #1: ORIGIN OF THE UNIVERSE
How did it all begin?
NOTES #1: ORIGIN OF THE UNIVERSE

7. BRAINSTORM
What do you know about current theories of where the universe came from?

8. DOPPLER EFFECT
When objects are moving towards you, the light they emit appears more blue because the waves are compressed (“blue shift”)
When objects are moving away from you, the light they emit appears more red because the waves are stretched out (“red shift”)

9. DOPPLER EFFECT

10. EVIDENCE-BASED LEARNING
I’m going to present some evidence to you, then you are going to come up with theories about how the universe began.

11. RED SHIFT
Early 20th century: Edwin Hubble discovered that light that reached Earth from distant galaxies in all directions was shifted toward the red end of the spectrum

12. DISCUSSION When do we observe red shift?
What does Hubble’s red shift tell us about the universe?

13. CONCLUSIONS The Universe is expanding!
If the Universe is expanding, how did it begin?

14. TWO THEORIES
Big Bang Theory
Steady State Theory

15. BIG BANG THEORY Universe began as a dense, hot, single point
13.7 billion years ago, a rapid expansion occurred outwards in all directions (NOT an explosion)
All matter and energy
was created at this point
Matter cooled and formed
atoms, gases, and stars
Universe is still expanding outwards from that expansion

16. VIDEO
Big Bang Theory

17. STEADY STATE THEORY
The universe looks the same as it has always been even though it is expanding
New matter is constantly being created from empty space to maintain its density

18. CONTRASTING IDEAS

19. DEATH OF THE UNIVERSE How do you think the Universe will end?
What are the possibilities?

20. TWO THEORIES
Big Crunch
Expansion Forever

21. BIG CRUNCH
Eventually, the Universe’s gravitation will be strong enough to halt and reverse expansion
The Universe will contract back into a single point
…and then another Big Bang?

22. EXPANSION FOREVER
The Universe will continue to expand and cool forever

23. VIDEO Death of the Universe

24. CONTRASTING IDEAS

25. PRACTICE Work independently. Use your notes and the reading.
Create a Big Bang Timeline
Choose which theories you support and explain why
BE SURE TO FOLLOW ALL DIRECTIONS… IF YOU ARE CONFUSED, PLEASE ASK FOR HELP!!!

26. HOMEWORK
The worksheet =)