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9th grade light, sound and waves

9th grade (Year 10 in England) · 14 questions · Common Core: NGSS.HS-PS4-1, NGSS.HS-PS4-3, NGSS.HS-PS4-4, NGSS.HS-PS4-5 · England: KS4 Combined Science: Waves in matter, KS4 Combined Science: Light and electromagnetic waves, GCSE Combined Science: Waves (Physics only: period)

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  1. Question 1

    A sound wave has a period of 0.005 s and travels at 330 m/s. What is its wavelength, in m? (v = f λ)

    Answerm

  2. Question 2

    The electromagnetic spectrum: which statement is NOT true?

    • A. Visible light is only a small part of the electromagnetic spectrum.
    • B. Radio waves are a type of sound.
    • C. Electromagnetic waves are transverse.
    • D. All electromagnetic waves travel at the same speed in a vacuum.

  3. Question 3

    A wave has a frequency of 5 Hz. What is its period, in seconds?

    Answers

  4. Question 4

    Which type of electromagnetic wave is used for broadcasting radio programmes?

    • A. radio waves
    • B. microwaves
    • C. X-rays
    • D. gamma rays

  5. Question 5

    A wave has a frequency of 500 Hz and a wavelength of 3 m. What is its speed, in m/s?

    Answerm/s

  6. Question 6

    One complete vibration takes 0.05 s. What is the frequency, in Hz?

    AnswerHz

  7. Question 7

    Sound travels at 340 m/s in air. What is the wavelength of a 340 Hz sound, in metres?

    Answerm

  8. Question 8

    A wave has a frequency of 20 Hz. What is its period (the time for one wave), in seconds?

    Answers

  9. Question 9

    A sound wave has a period of 0.01 s and travels at 330 m/s. What is its wavelength, in m? (v = f λ)

    Answerm

  10. Question 10

    The electromagnetic spectrum: which statement is NOT true?

    • A. X-rays have a lower frequency than visible light.
    • B. Electromagnetic waves are transverse.
    • C. All electromagnetic waves travel at the same speed in a vacuum.
    • D. Ultraviolet can damage skin cells and cause sunburn.

  11. Question 11

    A wave has a frequency of 10 Hz. What is its period, in seconds?

    Answers

  12. Question 12

    Which type of electromagnetic wave is used for sending TV signals?

    • A. infrared
    • B. X-rays
    • C. microwaves
    • D. radio waves

  13. Question 13

    A wave has a frequency of 2 Hz and a wavelength of 3 m. What is its speed, in m/s?

    Answerm/s

  14. Question 14

    One complete vibration takes 0.2 s. What is the frequency, in Hz?

    AnswerHz

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Answer key: 9th grade light, sound and waves

  1. 1. 1.65 m

  2. 2. B. Radio waves are a type of sound.

  3. 3. 0.2 s

  4. 4. A. radio waves

  5. 5. 1500 m/s

  6. 6. 20 Hz

  7. 7. 1 m

  8. 8. 0.05 s

  9. 9. 3.3 m

  10. 10. A. X-rays have a lower frequency than visible light.

  11. 11. 0.1 s

  12. 12. D. radio waves

  13. 13. 6 m/s

  14. 14. 5 Hz