1. Thank you for not chewing gum or anything else 
Materials:
Agenda
Pencil
Notebook/Folder
April,
Agenda:
Bell work
VIDEO – Life Cycle of Star
Daily Objective:
Today we will learn about how stars form, change, and are classified.
Daily Question:
How do you think scientists classify stars?

3. X-ray, Optical & Infrared Composite of Kepler's Supernova Remnant 
astronomers have utilized NASA's three Great Observatories to analyze the supernova remnant in infrared, optical and X-ray light.“
The higher-energy X-rays come primarily from the regions directly behind the shock front.
Green: X-ray
Lower-energy X-rays mark the location of the hot remains of the exploded star.
Yellow: Optical, 
The optical image reveals 10,000 degrees Celsius gas where the supernova shock wave is slamming into the densest regions of surrounding gas.
Red: Infrared, 
The infrared image highlights microscopic dust particles swept up and heated by the supernova shock wave

4. Life Cycle of a Star
DqxTPYg

5. Vocab - CH. 4.2 pg. 123
Light-year: The distance light travels in 1 year ( 9.5 trillion km) Parallax: The apparent shift in the position of an object when viewed from different locations. Nebula: Cloud of gas and dust where stars form. Main sequence: The stage where stars produce energy through the fusion of hydrogen into helium. (our sun is in this stage) Neutron star: Collapsed core of a super giant star Black hole: further collapsed core of a super giant star. Invisible object in which no form of radiation can escape. Luminosity: measurement of brightness

6. Low Mass
High Mass

7. Nebula
Main Sequence
Low Mass
High Mass
Dwarf
Other

8. Chapter 4.2
Read page 126
Flow map – Life Cycle of a low mass & high mass star
HR diagram Worksheet

9. Low Mass: High Mass: Picture Stellar Nebula Label: Definition:
Explanation:
Stellar Nebula
High Mass: