The Electromagnetic Spectrum Quiz
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5 questions, one answer each
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1. What type of wave is electromagnetic radiation?
- A. Longitudinal
- B. Transverse
- C. Torsional
- D. Standing
2. Which of these correctly orders the EM spectrum by increasing frequency?
- A. Gamma, X-ray, UV, visible, infrared, microwave, radio
- B. Radio, microwave, infrared, visible, UV, X-ray, gamma
- C. Infrared, radio, microwave, visible, gamma, X-ray, UV
- D. Visible, radio, infrared, gamma, X-ray, microwave, UV
3. A matt black object and a shiny silver object are at the same temperature. Which statement is correct?
- A. The shiny silver object absorbs and emits infrared better
- B. The matt black object absorbs and emits infrared better
- C. Both absorb and emit infrared equally well
- D. Neither object emits any infrared radiation
4. Why are X-rays useful for diagnosing bone fractures?
- A. X-rays are reflected by soft tissue but absorbed by air
- B. X-rays are absorbed by bone/metal but transmitted by healthy soft tissue
- C. X-rays travel faster through bone than through tissue
- D. X-rays only affect the colour of visible light
5. A technician working with gamma-ray sources wears protective shielding and limits exposure time. What is the main reason for this?
- A. Gamma rays are too weak to be detected otherwise
- B. Gamma rays are a type of ionising radiation that can cause genetic mutations and cell damage
- C. Gamma rays would otherwise be reflected back at the source
- D. Gamma rays are the only EM wave affected by temperature