Week 7
Introduction to The Universe
Now that we have explored many of the processes on Earth, we will point our attention to the stars. We have learned that stars are responsible for all of the elements that make up our planet. We will find out more about how this works and how our universe came to be in the first place.
Day 1 & 2
Part 1
Part 1 Notes
Galactic filament form where galaxies collect between voids in the Universe.
Age of the Universe is 14 billion years and has a life expectation of 28 billion years.
Everything in the universe started crushed down into a tiny speck and was released as the Big Bang.
Galaxies are collections of hundreds of billions of stars.
There are billions of galaxies in the Universe.
Evidence for the Big Bang
Red Shift - All distant galaxies are slightly red compared to the light produced by our own galaxy. This is evidence that every galaxy is moving away from us. It is evidence for the expansion of the universe (inflation).
Follow galaxies on their path in reverse and you find that their trajectories all lead to one singular point.
Multiverse Theory - The theory that there are multiple universes and inter-universal space.
The universe started very small; smaller than an atom. It was almost infinitely small, dense, energetic, and hot.
The laws of physics including the limitations of space and time were not unfolded yet in the first moments of the Big Bang. In ten minutes it was thousands of light years across. We use Planck Time to describe these moments.
Light Year - The distance that light travels in a year.
The pure energy of the big bang cooled into matter and antimatter subatomic particles that destroyed each other in a process called annihilation. 1 in a billion matter particles survived to make all of the matter that we have in our universe.
The "smoke" left over by the Big Bang became electrons and protons that in turn formed Hydrogen.
Day 3
Part 2
The-Story-Of-Everything-By-Stephen-Hawking-Part-2[www.savevid.com].mp4Part 2 Notes
Gravity is the major force that drives the formation of the Universe.
Day 4
Since it is seriously unlikely that we will ever explore other stars or galaxies it is important that we focus our energy on searching for life in our own solar system.
Select Space Probe Project teams and meet (see Google Classroom assignment).
Day 5
Universe Study Guide
What does the WMAP image tell us about the Universe?
What are examples of E=mc2
What does Red Shift tell us?
Know the basic sequence of events from Big Bang until now.
Know what the Universe looked like at different stages in its history?
Use the Universal Law of Gravitation to predict gravitational force between objects?
Approximately how many stars does a galaxy contain?
Recognize structures in the Universe and know their relative size compared to others.
Know what a "light year" is.
How old is the Universe and how long will it exist?
Review
Quiz in Google Classroom