• Light
    • Important since that is all astronomers can use to get information from space
  • Chapter 5.1 - The Behaviour of Light
    • Learning objectives
      • Explain the evidence for Maxwell’s electromagnetic model of light
      • Describe the relationship between wavelength, frequency, and speed of light
      • Discuss the particle model of light and the definition of photon
      • Explain how and why the amount of light we see from an object depends upon its distance
  • Chapter 5.2 - The Electromagnetic Spectrum
  • Chapter 5.3 - Spectroscopy in Astronomy
    • Learning objectives
      • Describe the properties of light
      • Explain how astronomers learn the composition of a gas by examining its spectral lines
      • Discuss the various types of spectra
  • Chapter 5.4 - Structure of the Atom
    • Learning objectives
      • Describe the structure of atoms and the components of nuclei
      • Explain the behavior of electrons within atoms and how electrons interact with light to move among energy levels
  • Chapter 5.5 - Formation of Spectral Lines
    • Learning objectives
      • Explain how emission line spectra and absorption line spectra are formed
      • Describe what ions are and how they are formed
      • Explain how spectral lines and ionization levels in a gas can help us determine its temperature
  • Chapter 5.6 - The Doppler Effect
    • Learning objectives
      • Explain why the spectral lines of photons we observe from an object will change as a result of the object’s motion toward or away from us
      • Describe how we can use the Doppler effect to deduce how fast astronomical objects are moving through space