December 19,2011

ObjectiveAnalyze and create

the H-R DiagramStar VideoH-R Diagram notes

( 1 slide to write down)

H-R Diagram GraphTextbook pages 789-

792 questions 1-7

TEST IS THURSDAY

Agenda

Hertzprung-Russell DiagramShows the relationship between a star’s surface temperature and absolute magnitude

Used to study the lives of starsMost stars lie along the main sequence portion of the diagram

What kind of a star is the sun?

Question 1

Main SequenceAnswer

What is the H-R diagram?

Question 2

A graph that shows the relationship between a star’s temperature and absolute magnitude

Answer

What are the four main types of stars?

Question 3

Main-SequenceGiants and Supergiants

White Dwarfs

Answer