The electromagnetic spectrum Quiz
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5 questions, one answer each
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1. Which EM wave has the highest frequency?
- A. Gamma rays
- B. X-rays
- C. Ultraviolet
- D. Radio waves
2. What speed do all EM waves travel at in a vacuum?
- A. 340 m/s
- B. 3 × 10⁶ m/s
- C. 3 × 10⁸ m/s
- D. 3 × 10¹⁰ m/s
3. Which radiation is used to see inside a broken limb?
- A. Microwaves
- B. Infrared
- C. Radio waves
- D. X-rays
4. Which EM wave can cause skin cancer?
- A. Infrared
- B. Ultraviolet
- C. Radio waves
- D. Microwaves
5. A radio wave has a frequency of 1 × 10⁶ Hz. What is its wavelength?
- A. 300 m
- B. 3 m
- C. 0.33 m
- D. 3 × 10¹⁴ m