1. Agenda Feb 9 and 10 Learning Target: I will be able to describe dark energy and Dark matter Vocabulary: Dark matter Dark energy Cool news: Dark energy https://www.youtube.com/watch?v=THT_BAdKe6g 1. Probing what you can not see—Dark Matter 2. Dark matter and energy notes 3. End of class: How might you compare dark matter and Dark energy?

2. Research assignment (this will be instead of a test on this unit! Due Feb 17: Pick one of the following and write a 5 paragraph essay. Must have four sources: A) research and describe the historical development of the Big Bang Theory, including red shift, cosmic microwave background radiation, and other supporting evidence; (B) research and describe current theories of the evolution of the universe, including estimates for the age of the universe; and (C) research and describe scientific hypotheses of the fate of the universe, including open and closed universes and the role of dark matter and dark energy. Possible Sources  Dark Energy website: experiments at McDonald Observatory Dark Energy  Audio and Video resources from the +Texas Cosmology CenterTexas Cosmology Center  History of Cosmology website from American Institute of Physics History of Cosmology  Cosmic Times a NASA project on Cosmology Cosmic Times

3. Homework: UW  Read and take Cornell notes: Pg. 661-679  Write good answers to Review and discussion questions 7, 8, 9 and 10.  You must turn these in by February 17