Praxis II Physics Content Knowledge Exam Prep

Category - Praxis II Physics Content Knowledge Test Prep

Which of the following statements best explains why lightning is seen before thunder is heard?
  1. Electromagnetic waves travel faster than mechanical waves in air.
  2. Electromagnetic waves have a higher frequency than mechanical waves.
  3. Electromagnetic waves experience less interference than mechanical
    waves.
  4. Electromagnetic waves form faster than mechanical waves during a thunderstorm.
Explanation
Answer: A - Electromagnetic waves travel faster than mechanical waves in air.
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