Praxis II General Science: Content Knowledge Exam Prep

Category - Praxis II General Science Content Knowledge Test Prep

Which type of electromagnetic radiation hasthe longest wavelength?
  1. Gamma rays
  2. Cosmic rays
  3. Radio waves
  4. Visible light
Explanation
Answer: C - Radio waves have the longest wavelength. Gamma rays and cosmic rays are much shorter. Visible light is in the middle of the spectrum.
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