BIG BANG
Unit 1
Directions:
1. Use the same warm-up sheet from last class.
2. Write the date, the title of the lesson, and your answer to the warm-up questions for today. Make sure to write your answers in complete sentence(s).
Lesson: Big Bang
Warm-up Questions:
1. Review. Why do stars have different colors?
2. Prior Knowledge. When you are on the road and hear a siren from the ambulance, how do you know if the
Objectives:
•
SW use the redshift of light from
stellar galactic spectra to explain the
BIG BA
NG
Stephen Hawking- The Big Bang
•
https://www.youtube.com/watch?v=gs-yWM
The
beginning
of the
universe
TIMELINE
Our sun is born, the heavy elements around it clump intoplanets
Simple life
evolves on
Earth
13.7 Billion Years Ago (BYA) 5 BYA
3.8 BYA
The big bang theory is a theory about…
a. What the universe was like in the beginning
The Universe Today
What to do?
1. Perform Expanding Universe Model
Expanding Universe Lab
2. Discussions on Big Bang Theory
Writes notes in your Evidence Notebook as the
What is the Universe?
The universe is defined as everything that physically exists
When we say "known universe," we are referring to what we have been able to observe from our vantage point on Earth. It is uncertain
whether the universe is finite or infinite, therefore when we discuss the universe we are usually referring to the observable universe, which
•
“Normal” Matter: ~ 4%(emits electromagnetic energy in the form of light)
•
Dark Matter: ~ 23%•
Dark Energy ~ 72%(Does NOT emits electromagnetic energy in the form of light)
Cosmic Microwave Background web quest
1. Color the CMB map using the provided key
2. Visit the site below, read the information presented, and answer questions A-D
http://www.universeadventure.org/big_bang/cmb-discovery.htm
A. Where did CMB come from? B. Why is CMB so cold?
C. Why is the map of the CMB different colors? D. Why is the map of the CMB an oval?