Astrophysics - Unit Detail

Total duration

16 lessons, 1 hour each

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Lesson 2.2 – The electromagnetic (EM) spectrum and the doppler effect

Learning outcomes

In this lesson students will explore:

Big ideas

Learning Sequence

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  1. Welcome students to this lesson and encourage several of the students new to this unit to introduce themselves to each other and the class.
  2. Investigation – Teacher uses the Prezi presentation 2.2.1 to introduce students to the EM spectrum. Students explore the colours of light to see that these are characterised by different frequencies and only a small part of the total EM spectrum. Students are also introduced to emission and absorption spectra. Final students are introduced to the Doppler Effect. Resources
  3. Discussion – Watch Activity (2.2.2), The Big Bang Theory video clip of Dr Sheldon Cooper explaining the Doppler Effect and invite comments and responses from the students. Resources
  4. Collaboration – Students revise the properties of waves and the features needed to perform calculations using the General Wave Equation v = λ f, and f = 1/T. Students then break into groups and complete Activity (2.2.3) the wave theory questions available from the shared NVSES Google site. Resources
  5. Reflection – Students are then brought back together as a whole class and teacher leads students through a discussion of their relevant answers to each of the parts from Activity (2.2.3).

Home Learning

  1. Activity (2.2.4) - NASA – Goddard website Imagine the Universe, EM Spectrum. Resources

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  2. Activity (2.2.5) – Telescopes and the EM spectrum; an optional research work sheet for advanced students.
  3. In their NVSES blog students complete the following statement: During today's lesson, I found it particularly difficult to _________. Something I can do to improve on this aspect of my learning next lesson is ___________.