1. EQ: How can patterns be used to describe the universe? Starter 1/19: What is the difference between an elliptical and irregular galaxy? 1/20 How is a elliptical galaxy different from a barred spiral and what can you find in each? Practice: Stars Sizes ppt and Notes Glue notes here when done 1/19-20/16 135 136 1/19-20/16 Lives of Stars Application/ Connection: Lives of Stars Poster Imagine you are a star and create a poster and describe the journey of your life. You can be creative, but it must include facts of a stars life. This is a project grade!!! Due by Friday 1/22/16 Exit: Looking at the picture below, explain what the spectrum is telling us about the universe.

2. January 19, 2016 AGENDA Objective 8.8C Describe components of the universe, including stars, nebulae, and galaxies, and use models such as the Herztsprung-Russell diagram for classification by taking notes and a poster. 1. Starter 2. Notes 3 Activity 4. Exit

3. Table of Contents Date Lecture/ Activity/ Lab Page 1/12 Semester Exam Review 131-132 1/15 Galaxies 133-134 1/19 Lives of Stars 135-136

5. How long a star lives depends on how much mass it began with. Small stars use their fuel slower than large stars so they live longer. Star-life Our Sun Now Our Sun in the future

7. Stage 1: Nebula Stars begin their lives in an area called a nebula. A nebula is a large amount of gas and dust spread out in a immense volume.

8. Stage 2:Protostar the early stage of a stars life. cloud of dust and gas is then clumped together by nuclear fusion to form what is called a protostar.

9. Step 3: Main Sequence Stars moves into the main sequence. becomes a medium size star spends most of its life. All other stars are measured in comparison to Sun.

10. As stars burn out of Hydrogen gas they move up and to the right. they become giants, and supergiants. Stars are burning Helium now. Stage 4: Giant and Supergiants

11. Stage 5: White and Black Dwarf When a Red giant starts to run out of fuel, it moves into the death stages. A white dwarf-is the blue-white hot core of a dead red giant. These are low mass stars. Sirius B is a White Dwarf Sirius A is a Main Sequence Star

12. OR Stage 5: Neutron It may also become: –A neutron star-formed from a supernova (the explosion of a Super giant). This is a high mass star.

13. OR Stage 5: Black Hole OR It may become : A Black Hole- a core of a super massive star that remains after a supernova. The gravity of this mass is so strong that not even light can escape it. SupernovaBlack Hole

15. Imagine you are a star and describe the journey of your life. You can be creative, but it must include facts of a stars life. Must include pictures and be colorful!!! This is a project grade!!! Due Friday 1/22/16 Lives of Stars Poster

16. EQ: How can patterns be used to describe the universe? Starter 1/19: What is the difference between an elliptical and irregular galaxy? 1/20 How is a elliptical galaxy different from a barred spiral and what can you find in each? Practice: Stars Sizes ppt and Notes Glue notes here when done 1/19-20/16 135 136 1/19-20/16 Lives of Stars Application/ Connection: Lives of Stars Poster Imagine you are a star and create a poster and describe the journey of your life. You can be creative, but it must include facts of a stars life. This is a project grade!!! Due by Friday 1/22/16 Exit: Looking at the picture below, explain what the spectrum is telling us about the universe.