Astrophysics

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Astrophysics - Competed Notes (pdf)
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Astrophysics - Content Guide (pdf)
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Astrophysics - Content Guide (editable)
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Astrophysics - Content Guide - Complete (pdf)
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Astrophysics - Content Guide - Complete (editable)
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1 – The Scale of Astrophysics

• I can describe the relative scale of the solar system
  
• I can identify the defining characteristics required for a celestial body to be a planet 
  
• I can define a light year (ly) as a unit of distance in terms of meters
  
• I can define the meaning of one astronomical unit (AU)
  
• I can relate degrees and seconds as units of angular measurement
  
• I can describe the meaning of 1 parsec as a unit of distance
  

The Scale of Astrophysics (pdf)
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The Scale of Astrophysics - Complete (pdf)
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The Scale of Astrophysics (editable)
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2 – Stellar Quantities

• I can describe the phenomenon of stellar parallax and how it can be used to measure distance
  
• I can calculate distance in parsecs of a nearby star when given the parallax angle in arc seconds
  
• I can compare the definitions of brightness and luminosity
  
• I can conceptually describe the relationship between a star’s brightness and distance from viewer
  
• I can calculate the brightness of a star with a known luminosity and distance
  
• I can describe how different stars can appear the same brightness on earth
  
• I can use Wien’s Displacement Law to mathematically relate peak wavelength and temperature
  
• I can use Stefan-Boltzmann’s Law to mathematically relate luminosity, radius and temperature 
  

Stellar Quantities (pdf)
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Stellar Quantities - Complete (pdf)
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Stellar Quantities (editable)
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3 – H-R Diagrams and Stellar Spectra

• I can place a star on an axis showing luminosity vs temperature
  
• I can describe the organization of the Hertzsprung-Russell Diagram
  
• I can use the main sequence to calculate the distance of a star from its wavelength and brightness
  
• I can proportionally relate a star’s luminosity to its mass
  
• I can identify the chemical makeup of a star from its absorption spectrum
  

H-R Diagrams and Spectra (pdf)
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H-R Diagrams and Spectra - Complete (pdf)
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H-R Diagrams and Spectra (editable)
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4 – Evolution of Stars

• I can predict the relative life span of a star based on its type
  
• I can explain the process of stellar equilibrium and how the temperature affects size 
  
• I can describe the life cycle of a low mass star like the Sun and plot it on an H-R Diagram
  
• I can describe the nature and formation process of a white dwarf star
  
• I can define the Chandrasekhar Limit as the maximum mass of a core that can become a white dwarf
  
• I can define the Oppenheimer-Volkhoff Limit as the maximum mass of a neutron star
  
• I can predict the fate of a star based on its mass
  

Evolution of Stars (pdf)
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Evolution of Stars - Complete (pdf)
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Evolution of Stars (editable)
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5 – The Expanding Universe

• I can describe the nature of Cephid Variables
• I can use a table to relate the luminosity and period of a Cephid Variable
  
• I can outline the process that results in a Type IA Supernova
  
• I can describe the value of a “standard candle” in making measurements about distance
  
• I can use wavelength shift to calculate the relative speed of an object
  
• I can describe the important discovery that Hubble made when analyzing redshift of distant stars
  
• I can relate the distance of an object to its relative velocity using the Hubble Constant
  
• I can calculate redshift based on the expansion of the universe

The Expanding Universe (pdf)
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The Expanding Universe - Complete (pdf)
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The Expanding Universe (editable)
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6 – The Beginning and The End

• I can describe the different methods to find the distances of objects based on magnitude
  
• I can use Hubble’s constant to estimate the age of the universe
  
• I can outline the steps in the Big Bang
  
• I can describe the CMB and why it is important evidence of the Big Bang
  
• I can provide the peak wavelength and average temperature of the CMB
  
• I can describe the current theory about the expansion of the universe
  

The Beginning and The End (pdf)
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The Beginning and The End - Complete (pdf)
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The Beginning and The End (editable)
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