Thank you for not chewing gum or anything else Materials: Agenda Pencil Notebook/Folder April, 24 2017 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?
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
Life Cycle of a Star https://www.youtube.com/watch?v=lCSx DqxTPYg
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
Low Mass High Mass
Nebula Main Sequence Low Mass High Mass Dwarf Other
Chapter 4.2 Read page 126 Flow map – Life Cycle of a low mass & high mass star HR diagram Worksheet
Low Mass: High Mass: Picture Stellar Nebula Label: Definition: Explanation: Stellar Nebula High Mass: