11/10. Electromagnetic Spectrum Quiz

Which of the following statements about electromagnetic waves is not true?

• A) They are transverse waves.

• B) They require a medium to travel.

• C) They travel at a speed of 3.0 × 10⁸ m/s in a vacuum.

• D) They transfer energy without transferring matter.

Which of the following are electromagnetic waves?
i) Ultrasound
ii) X-rays
iii) Visible light
iv) Infrared radiation
v) Microwave

• i only

• ii, iv and v only

• ii, iii, iv and v only

• All of the above

Which wave in the electromagnetic spectrum has the shortest wavelength and highest frequency?

• A) Ultraviolet radiation

• B) X-rays

• C) Radio waves

• D) Gamma rays

In order of increasing frequency, which of the following correctly arranges four EM waves?

• A) Radio waves → Microwaves → Infrared → Visible Light

• B) Gamma rays → X-rays → Ultraviolet → Visible Light

• C) Infrared → Microwaves → Ultraviolet → Visible Light

• D) Radio waves → Visible Light → Microwaves → Gamma rays

Which of the following is not a use of microwaves?

• A) Microwave cooking

• B) Cancer treatment

• C) Satellite communication (e.g. mobile phones)

• D) Radar communication

Which of the following is not a use of infrared waves?

• A) Remote controls

• B) Thermal cameras

• C) Intruder alarms

• D) Analysing crystals

Which of the following is not a use of ultraviolet radiation?

• A) Detection of forgery in bank notes

• B) Sterilising and disinfecting equipment

• C) Thermal imaging

• D) Artificial suntanning

Which EM wave is most commonly used for medical imaging of bones?

• A) Infrared

• B) X-rays

• C) Ultraviolet

• D) Gamma rays

Which of the following describe hazards of high-frequency EM radiation such as X-rays and gamma rays?

• A) Can cause chemical burns

• B) May ionise cells and damage tissues

• C) Can interfere with WiFi signals

• D) Cause hearing loss

Which of the following is not a common use of gamma rays?

• A) Sterilising medical equipment

• B) WiFi networks

• C) To kill cancer cells

• D) Checking for flaws in metal products