2020-10-05

astr-1101

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
- Learning objectives
  - Understand the bands of the electromagnetic spectrum and how they differ from one another
  - Understand how each part of the electromagnetic spectrum interacts with Earth’s atmosphere
  - Explain how and why the light emitted by an object depends on its temperature
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