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Quiz 3: Wave Types and Electromagnetic Radiation

Quiz by Mr.MD Showket Hasan

Grade 9
Science
Thailand Core Curriculum

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20 questions
Show answers
  • Q1
    What is the primary difference between mechanical waves and electromagnetic waves?
    Electromagnetic waves have longer wavelengths
    Mechanical waves require a medium to travel
    Mechanical waves have higher frequencies
    Electromagnetic waves require a medium to travel
    30s
    SC9.E.1
  • Q2
    Which of the following best describes the amplitude of a wave?
    The number of cycles per second
    The time taken for one complete cycle
    The distance between two crests
    The maximum displacement from the rest position
    30s
  • Q3
    If a wave has a frequency of 50 Hz, what is its period?
    50 seconds
    0.5 seconds
    2 seconds
    0.02 seconds
    30s
  • Q4
    In a transverse wave, the particles of the medium move:
    In circular motions
    Perpendicular to the direction of wave propagation
    Parallel to the direction of wave propagation
    In random directions
    30s
  • Q5
    Which type of electromagnetic radiation has the longest wavelength?
    Visible light
    Gamma rays
    X-rays
    Radio waves
    30s
  • Q6
    What happens to the frequency of electromagnetic waves as their wavelength decreases?
    It decreases
    It increases
    It remains constant
    It becomes zero
    30s
  • Q7
    Which of the following is NOT a property of all waves?
    They have a wavelength
    They transfer energy
    They have amplitude
    They require a medium to travel
    30s
  • Q8
    In a longitudinal wave, what are the areas of high pressure called?
    Crests
    Rarefactions
    Troughs
    Compressions
    30s
  • Q9
    What is the speed of light in a vacuum?
    3 × 10⁸ m/s
    3 × 10⁴ m/s
    3 × 10⁶ m/s
    3 × 10² m/s
    30s
  • Q10
    Which part of the electromagnetic spectrum is used in radar systems?
    Radio waves
    Infrared waves
    X-rays
    Gamma rays
    30s
  • Q11
    What is the relationship between wavelength (λ) and frequency (f) for any wave?
    λ = f²
    λf = c (where c is the speed of the wave)
    λ = f
    λ = 1/f
    30s
  • Q12
    Which type of electromagnetic radiation is responsible for sunburns?
    Microwaves
    Visible light
    Ultraviolet
    Infrared
    30s
  • Q13
    What happens to the particles in a medium after a wave has passed through?
    They return to their original position
    They continue to vibrate indefinitely
    They stop moving completely
    They move to a new position
    30s
  • Q14
    Which of the following is NOT a type of mechanical wave?
    Water waves
    Seismic waves
    Sound waves
    Radio waves
    30s
  • Q15
    What determines the color of visible light?
    Medium
    Amplitude
    Wavelength
    Speed
    30s

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