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How sound travels through solids, liquids and gases

7th grade (Year 8 in England) · 16 questions · Common Core: NGSS.MS-PS4-2 · England: KS3 Physics: Waves (sound)

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  1. Question 1

    How sound travels: which statement is NOT true?

    • A. Whales can communicate over long distances underwater.
    • B. Sound travels faster in water than in air.
    • C. Sound travels faster than light.
    • D. Sound cannot travel through a vacuum.

  2. Question 2

    Astronauts on a spacewalk talk by radio. Why can't they just shout?

    • A. Space is a near vacuum, so sound cannot travel between them
    • B. Their voices are too quiet
    • C. Radio waves are a type of sound
    • D. Space is too cold for sound

  3. Question 3

    Sound travels at about 340 m/s in air. How far does it travel in 3 s, in m?

    Answerm

  4. Question 4

    How sound travels: which statement is NOT true?

    • A. Whales can communicate over long distances underwater.
    • B. Sound travels faster than light.
    • C. Sound waves are longitudinal.
    • D. Sound cannot travel through a vacuum.

  5. Question 5

    Why does sound travel faster in steel than in air?

    • A. Steel is shiny
    • B. Particles in solids are close together and strongly linked, so vibrations pass on quickly
    • C. Air has no particles
    • D. Sound is magnetic

  6. Question 6

    Sound travels at about 1500 m/s in water. How far does it travel in 2 s, in m?

    Answerm

  7. Question 7

    How sound travels: which statement is NOT true?

    • A. Sound travels faster in water than in air.
    • B. Whales can communicate over long distances underwater.
    • C. Sound waves are longitudinal.
    • D. Sound travels fastest in gases.

  8. Question 8

    In which direction do air particles vibrate when a sound wave passes?

    • A. up and down, at right angles to the wave
    • B. they do not move
    • C. in circles
    • D. backwards and forwards, parallel to the direction the sound travels

  9. Question 9

    Sound travels at about 5000 m/s in steel. How far does it travel in 3 s, in m?

    Answerm

  10. Question 10

    How sound travels: which statement is NOT true?

    • A. Whales can communicate over long distances underwater.
    • B. Sound waves are longitudinal.
    • C. Sound travels fastest in gases.
    • D. Sound cannot travel through a vacuum.

  11. Question 11

    Why does sound travel faster in steel than in air?

    • A. Sound is magnetic
    • B. Air has no particles
    • C. Steel is shiny
    • D. Particles in solids are close together and strongly linked, so vibrations pass on quickly

  12. Question 12

    Sound travels at about 340 m/s in air. How far does it travel in 3 s, in m?

    Answerm

  13. Question 13

    How sound travels: which statement is NOT true?

    • A. Sound cannot travel through a vacuum.
    • B. Sound waves are longitudinal.
    • C. Whales can communicate over long distances underwater.
    • D. Sound travels fastest in gases.

  14. Question 14

    In which direction do air particles vibrate when a sound wave passes?

    • A. up and down, at right angles to the wave
    • B. in circles
    • C. they do not move
    • D. backwards and forwards, parallel to the direction the sound travels

  15. Question 15

    Sound travels at about 5000 m/s in steel. How far does it travel in 4 s, in m?

    Answerm

  16. Question 16

    How sound travels: which statement is NOT true?

    • A. Sound travels faster in water than in air.
    • B. In a sound wave, air particles travel all the way from the source to your ear.
    • C. Sound waves are longitudinal.
    • D. Sound cannot travel through a vacuum.

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Answer key: How sound travels through solids, liquids and gases

  1. 1. C. Sound travels faster than light.

  2. 2. A. Space is a near vacuum, so sound cannot travel between them

  3. 3. 1020 m

  4. 4. B. Sound travels faster than light.

  5. 5. B. Particles in solids are close together and strongly linked, so vibrations pass on quickly

  6. 6. 3000 m

  7. 7. D. Sound travels fastest in gases.

  8. 8. D. backwards and forwards, parallel to the direction the sound travels

  9. 9. 15000 m

  10. 10. C. Sound travels fastest in gases.

  11. 11. D. Particles in solids are close together and strongly linked, so vibrations pass on quickly

  12. 12. 1020 m

  13. 13. D. Sound travels fastest in gases.

  14. 14. D. backwards and forwards, parallel to the direction the sound travels

  15. 15. 20000 m

  16. 16. B. In a sound wave, air particles travel all the way from the source to your ear.