ScienceAges 4-6

Sound, pitch & vibrations

Explore how vibrations produce sound waves, how pitch and volume change, and how sound travels through media. Review suitability for your learners before teaching.

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Worksheet StudioPractice pack · Ages 4-6

Sound, pitch & vibrations

Take your time. Show your thinking.

1. What unit is used in science to measure the frequency of a sound wave (the number of vibrations per second): hertz (Hz) or newtons (N)?
Amplitude (Loudness) · Frequency (Pitch)
2. When you pluck a stretched rubber band or guitar string, what do you see and hear: the string vibrates rapidly and makes a sound, or the string turns into liquid?
Amplitude (Loudness) · Frequency (Pitch)
3. How are all sounds produced: by objects vibrating back and forth, or by objects standing completely still?
Amplitude (Loudness) · Frequency (Pitch)
4. Which thin stretched membrane inside the human ear vibrates when sound waves reach it down the ear canal: the eardrum (tympanic membrane) or the retina?
Amplitude (Loudness) · Frequency (Pitch)
5. Does sound travel fastest through a gas (air), a liquid (water) or a solid (steel): a solid (steel) or a gas (air)?
Amplitude (Loudness) · Frequency (Pitch)
6. Why are cinema walls and recording studios lined with soft foam, curtains and carpets: soft, porous materials absorb sound waves to prevent echoes, or soft foam makes sounds louder?
Amplitude (Loudness) · Frequency (Pitch)
7. What word describes how loud or quiet a sound is: volume (loudness) or pitch?
Amplitude (Loudness) · Frequency (Pitch)
8. What word describes how high or low a musical note sounds (such as a high whistle vs a low bass drum): pitch or volume?
Amplitude (Loudness) · Frequency (Pitch)
9. Why does a sound become quieter the further away you move from the source: the sound energy spreads out over a larger and larger sphere of air, or the pitch drops to zero?
Amplitude (Loudness) · Frequency (Pitch)
10. When you speak or sing and gently rest your fingers on the front of your throat, what do you feel vibrating inside your voice box (larynx): your vocal cords, or your collarbone?
Amplitude (Loudness) · Frequency (Pitch)
11. Can sound travel through empty outer space (a vacuum where there are no particles): No, because sound needs a medium of particles to vibrate, or Yes, faster than light?
Amplitude (Loudness) · Frequency (Pitch)
12. If an object vibrates faster (with a higher frequency, more vibrations per second), what happens to the pitch of the sound: the pitch gets higher, or the pitch gets lower?
Amplitude (Loudness) · Frequency (Pitch)

12 questions · Seed 58 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 4-6

Sound, pitch & vibrations

Answers and reasoning. Review before teaching.

1. What unit is used in science to measure the frequency of a sound wave (the number of vibrations per second): hertz (Hz) or newtons (N)?
Hertz (Hz)
1 hertz (1 Hz) equals 1 complete vibration (cycle) per second.
2. When you pluck a stretched rubber band or guitar string, what do you see and hear: the string vibrates rapidly and makes a sound, or the string turns into liquid?
The string vibrates rapidly and makes a sound
Stopping the vibration of the string immediately stops the sound.
3. How are all sounds produced: by objects vibrating back and forth, or by objects standing completely still?
By objects vibrating back and forth
Every sound source—such as a plucked guitar string, a drum skin or your vocal cords—vibrates.
4. Which thin stretched membrane inside the human ear vibrates when sound waves reach it down the ear canal: the eardrum (tympanic membrane) or the retina?
Eardrum (tympanic membrane)
Sound waves cause the eardrum to vibrate, passing vibrations to the three tiny middle-ear bones (ossicles).
5. Does sound travel fastest through a gas (air), a liquid (water) or a solid (steel): a solid (steel) or a gas (air)?
A solid (steel)
Particles in a solid are packed closely together with strong bonds, passing vibrations much faster (~5,000 m/s in steel vs ~340 m/s in air).
6. Why are cinema walls and recording studios lined with soft foam, curtains and carpets: soft, porous materials absorb sound waves to prevent echoes, or soft foam makes sounds louder?
Soft, porous materials absorb sound waves to prevent echoes
Soft materials trap air and convert sound energy into tiny amounts of heat, reducing reverberation.
7. What word describes how loud or quiet a sound is: volume (loudness) or pitch?
Volume (loudness)
Volume depends on the amplitude (size) of the vibrations.
8. What word describes how high or low a musical note sounds (such as a high whistle vs a low bass drum): pitch or volume?
Pitch
Pitch is how high or low a sound is and depends on the frequency of vibration.
9. Why does a sound become quieter the further away you move from the source: the sound energy spreads out over a larger and larger sphere of air, or the pitch drops to zero?
The sound energy spreads out over a larger and larger sphere of air
As distance from the source increases, the wave energy is spread over a bigger area, so amplitude decreases.
10. When you speak or sing and gently rest your fingers on the front of your throat, what do you feel vibrating inside your voice box (larynx): your vocal cords, or your collarbone?
Your vocal cords
Air from the lungs passes between the vocal cords in the larynx, making them vibrate to produce your voice.
11. Can sound travel through empty outer space (a vacuum where there are no particles): No, because sound needs a medium of particles to vibrate, or Yes, faster than light?
No, because sound needs a medium of particles to vibrate
Unlike light, sound is a mechanical wave and cannot travel through a vacuum.
12. If an object vibrates faster (with a higher frequency, more vibrations per second), what happens to the pitch of the sound: the pitch gets higher, or the pitch gets lower?
The pitch gets higher
Higher frequency vibrations produce a higher-pitched sound.

12 questions · Seed 58 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 4-6

Sound, pitch & vibrations

Take your time. Show your thinking.

1. What unit is used in science to measure the frequency of a sound wave (the number of vibrations per second): hertz (Hz) or newtons (N)?
Amplitude (Loudness) · Frequency (Pitch)
2. When you pluck a stretched rubber band or guitar string, what do you see and hear: the string vibrates rapidly and makes a sound, or the string turns into liquid?
Amplitude (Loudness) · Frequency (Pitch)
3. How are all sounds produced: by objects vibrating back and forth, or by objects standing completely still?
Amplitude (Loudness) · Frequency (Pitch)
4. Which thin stretched membrane inside the human ear vibrates when sound waves reach it down the ear canal: the eardrum (tympanic membrane) or the retina?
Amplitude (Loudness) · Frequency (Pitch)
5. Does sound travel fastest through a gas (air), a liquid (water) or a solid (steel): a solid (steel) or a gas (air)?
Amplitude (Loudness) · Frequency (Pitch)
6. Why are cinema walls and recording studios lined with soft foam, curtains and carpets: soft, porous materials absorb sound waves to prevent echoes, or soft foam makes sounds louder?
Amplitude (Loudness) · Frequency (Pitch)
7. What word describes how loud or quiet a sound is: volume (loudness) or pitch?
Amplitude (Loudness) · Frequency (Pitch)
8. What word describes how high or low a musical note sounds (such as a high whistle vs a low bass drum): pitch or volume?
Amplitude (Loudness) · Frequency (Pitch)
9. Why does a sound become quieter the further away you move from the source: the sound energy spreads out over a larger and larger sphere of air, or the pitch drops to zero?
Amplitude (Loudness) · Frequency (Pitch)
10. When you speak or sing and gently rest your fingers on the front of your throat, what do you feel vibrating inside your voice box (larynx): your vocal cords, or your collarbone?
Amplitude (Loudness) · Frequency (Pitch)
11. Can sound travel through empty outer space (a vacuum where there are no particles): No, because sound needs a medium of particles to vibrate, or Yes, faster than light?
Amplitude (Loudness) · Frequency (Pitch)
12. If an object vibrates faster (with a higher frequency, more vibrations per second), what happens to the pitch of the sound: the pitch gets higher, or the pitch gets lower?
Amplitude (Loudness) · Frequency (Pitch)

12 questions · Seed 58 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 4-6

Sound, pitch & vibrations

Answers and reasoning. Review before teaching.

1. What unit is used in science to measure the frequency of a sound wave (the number of vibrations per second): hertz (Hz) or newtons (N)?
Hertz (Hz)
1 hertz (1 Hz) equals 1 complete vibration (cycle) per second.
2. When you pluck a stretched rubber band or guitar string, what do you see and hear: the string vibrates rapidly and makes a sound, or the string turns into liquid?
The string vibrates rapidly and makes a sound
Stopping the vibration of the string immediately stops the sound.
3. How are all sounds produced: by objects vibrating back and forth, or by objects standing completely still?
By objects vibrating back and forth
Every sound source—such as a plucked guitar string, a drum skin or your vocal cords—vibrates.
4. Which thin stretched membrane inside the human ear vibrates when sound waves reach it down the ear canal: the eardrum (tympanic membrane) or the retina?
Eardrum (tympanic membrane)
Sound waves cause the eardrum to vibrate, passing vibrations to the three tiny middle-ear bones (ossicles).
5. Does sound travel fastest through a gas (air), a liquid (water) or a solid (steel): a solid (steel) or a gas (air)?
A solid (steel)
Particles in a solid are packed closely together with strong bonds, passing vibrations much faster (~5,000 m/s in steel vs ~340 m/s in air).
6. Why are cinema walls and recording studios lined with soft foam, curtains and carpets: soft, porous materials absorb sound waves to prevent echoes, or soft foam makes sounds louder?
Soft, porous materials absorb sound waves to prevent echoes
Soft materials trap air and convert sound energy into tiny amounts of heat, reducing reverberation.
7. What word describes how loud or quiet a sound is: volume (loudness) or pitch?
Volume (loudness)
Volume depends on the amplitude (size) of the vibrations.
8. What word describes how high or low a musical note sounds (such as a high whistle vs a low bass drum): pitch or volume?
Pitch
Pitch is how high or low a sound is and depends on the frequency of vibration.
9. Why does a sound become quieter the further away you move from the source: the sound energy spreads out over a larger and larger sphere of air, or the pitch drops to zero?
The sound energy spreads out over a larger and larger sphere of air
As distance from the source increases, the wave energy is spread over a bigger area, so amplitude decreases.
10. When you speak or sing and gently rest your fingers on the front of your throat, what do you feel vibrating inside your voice box (larynx): your vocal cords, or your collarbone?
Your vocal cords
Air from the lungs passes between the vocal cords in the larynx, making them vibrate to produce your voice.
11. Can sound travel through empty outer space (a vacuum where there are no particles): No, because sound needs a medium of particles to vibrate, or Yes, faster than light?
No, because sound needs a medium of particles to vibrate
Unlike light, sound is a mechanical wave and cannot travel through a vacuum.
12. If an object vibrates faster (with a higher frequency, more vibrations per second), what happens to the pitch of the sound: the pitch gets higher, or the pitch gets lower?
The pitch gets higher
Higher frequency vibrations produce a higher-pitched sound.

12 questions · Seed 58 · Age guidance, not curriculum certification