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. How are all sounds produced: by objects vibrating back and forth, or by objects standing completely still?
Amplitude (Loudness) · Frequency (Pitch)
2. What unit is used on a sound-level meter to measure the loudness (intensity level) of a sound: decibels (dB) or degrees Celsius (°C)?
Amplitude (Loudness) · Frequency (Pitch)
3. 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)
4. 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)
5. 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)
6. 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)
7. When a guitarist tightens a guitar string to increase its tension, what happens to the pitch of the note: the pitch becomes higher, or the string stops vibrating?
Amplitude (Loudness) · Frequency (Pitch)
8. How do bats and dolphins use echolocation (sonar) to find prey in the dark or deep water: they emit high-pitched clicks and time how long the echoes take to bounce back, or they use magnets?
Amplitude (Loudness) · Frequency (Pitch)
9. If you gently touch a ringing tuning fork against the surface of a bowl of water, why does the water splash: the tuning fork is vibrating rapidly, or the tuning fork is hot?
Amplitude (Loudness) · Frequency (Pitch)
10. Why do ramp workers near jet engines and operators of loud machinery wear ear defenders (earmuffs): very loud sounds can permanently damage the sensitive hair cells in the inner ear (cochlea), or to keep their ears warm?
Amplitude (Loudness) · Frequency (Pitch)
11. What is an echo: a sound wave that bounces (reflects) off a hard surface like a cliff or wall and returns to your ears, or a brand-new sound made by the rocks?
Amplitude (Loudness) · Frequency (Pitch)
12. How does sound travel from a ringing bell to your ear: vibrations pass from particle to particle through the air as a sound wave, or tiny pieces of metal fly into your ear?
Amplitude (Loudness) · Frequency (Pitch)

12 questions · Seed 104730 · 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. 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.
2. What unit is used on a sound-level meter to measure the loudness (intensity level) of a sound: decibels (dB) or degrees Celsius (°C)?
Decibels (dB)
Sound intensity levels are measured on the decibel (dB) scale.
3. 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).
4. 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).
5. 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.
6. 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.
7. When a guitarist tightens a guitar string to increase its tension, what happens to the pitch of the note: the pitch becomes higher, or the string stops vibrating?
The pitch becomes higher
A tighter string vibrates faster when plucked, raising the pitch.
8. How do bats and dolphins use echolocation (sonar) to find prey in the dark or deep water: they emit high-pitched clicks and time how long the echoes take to bounce back, or they use magnets?
They emit high-pitched clicks and time how long the echoes take to bounce back
The time delay and direction of returning echoes reveal the distance and location of objects.
9. If you gently touch a ringing tuning fork against the surface of a bowl of water, why does the water splash: the tuning fork is vibrating rapidly, or the tuning fork is hot?
The tuning fork is vibrating rapidly
The mechanical vibrations of the prongs transfer energy to the water, creating ripples and splashes.
10. Why do ramp workers near jet engines and operators of loud machinery wear ear defenders (earmuffs): very loud sounds can permanently damage the sensitive hair cells in the inner ear (cochlea), or to keep their ears warm?
Very loud sounds can permanently damage the sensitive hair cells in the inner ear (cochlea)
Padded ear defenders absorb sound energy and reduce the decibel level reaching the eardrum.
11. What is an echo: a sound wave that bounces (reflects) off a hard surface like a cliff or wall and returns to your ears, or a brand-new sound made by the rocks?
A sound wave that bounces (reflects) off a hard surface like a cliff or wall and returns to your ears
An echo is a reflected sound wave heard a short time after the original sound.
12. How does sound travel from a ringing bell to your ear: vibrations pass from particle to particle through the air as a sound wave, or tiny pieces of metal fly into your ear?
Vibrations pass from particle to particle through the air as a sound wave
Sound is a longitudinal mechanical wave of compressions and rarefactions travelling through air particles.

12 questions · Seed 104730 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 4-6

Sound, pitch & vibrations

Take your time. Show your thinking.

1. How are all sounds produced: by objects vibrating back and forth, or by objects standing completely still?
Amplitude (Loudness) · Frequency (Pitch)
2. What unit is used on a sound-level meter to measure the loudness (intensity level) of a sound: decibels (dB) or degrees Celsius (°C)?
Amplitude (Loudness) · Frequency (Pitch)
3. 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)
4. 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)
5. 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)
6. 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)
7. When a guitarist tightens a guitar string to increase its tension, what happens to the pitch of the note: the pitch becomes higher, or the string stops vibrating?
Amplitude (Loudness) · Frequency (Pitch)
8. How do bats and dolphins use echolocation (sonar) to find prey in the dark or deep water: they emit high-pitched clicks and time how long the echoes take to bounce back, or they use magnets?
Amplitude (Loudness) · Frequency (Pitch)
9. If you gently touch a ringing tuning fork against the surface of a bowl of water, why does the water splash: the tuning fork is vibrating rapidly, or the tuning fork is hot?
Amplitude (Loudness) · Frequency (Pitch)
10. Why do ramp workers near jet engines and operators of loud machinery wear ear defenders (earmuffs): very loud sounds can permanently damage the sensitive hair cells in the inner ear (cochlea), or to keep their ears warm?
Amplitude (Loudness) · Frequency (Pitch)
11. What is an echo: a sound wave that bounces (reflects) off a hard surface like a cliff or wall and returns to your ears, or a brand-new sound made by the rocks?
Amplitude (Loudness) · Frequency (Pitch)
12. How does sound travel from a ringing bell to your ear: vibrations pass from particle to particle through the air as a sound wave, or tiny pieces of metal fly into your ear?
Amplitude (Loudness) · Frequency (Pitch)

12 questions · Seed 104730 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 4-6

Sound, pitch & vibrations

Answers and reasoning. Review before teaching.

1. 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.
2. What unit is used on a sound-level meter to measure the loudness (intensity level) of a sound: decibels (dB) or degrees Celsius (°C)?
Decibels (dB)
Sound intensity levels are measured on the decibel (dB) scale.
3. 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).
4. 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).
5. 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.
6. 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.
7. When a guitarist tightens a guitar string to increase its tension, what happens to the pitch of the note: the pitch becomes higher, or the string stops vibrating?
The pitch becomes higher
A tighter string vibrates faster when plucked, raising the pitch.
8. How do bats and dolphins use echolocation (sonar) to find prey in the dark or deep water: they emit high-pitched clicks and time how long the echoes take to bounce back, or they use magnets?
They emit high-pitched clicks and time how long the echoes take to bounce back
The time delay and direction of returning echoes reveal the distance and location of objects.
9. If you gently touch a ringing tuning fork against the surface of a bowl of water, why does the water splash: the tuning fork is vibrating rapidly, or the tuning fork is hot?
The tuning fork is vibrating rapidly
The mechanical vibrations of the prongs transfer energy to the water, creating ripples and splashes.
10. Why do ramp workers near jet engines and operators of loud machinery wear ear defenders (earmuffs): very loud sounds can permanently damage the sensitive hair cells in the inner ear (cochlea), or to keep their ears warm?
Very loud sounds can permanently damage the sensitive hair cells in the inner ear (cochlea)
Padded ear defenders absorb sound energy and reduce the decibel level reaching the eardrum.
11. What is an echo: a sound wave that bounces (reflects) off a hard surface like a cliff or wall and returns to your ears, or a brand-new sound made by the rocks?
A sound wave that bounces (reflects) off a hard surface like a cliff or wall and returns to your ears
An echo is a reflected sound wave heard a short time after the original sound.
12. How does sound travel from a ringing bell to your ear: vibrations pass from particle to particle through the air as a sound wave, or tiny pieces of metal fly into your ear?
Vibrations pass from particle to particle through the air as a sound wave
Sound is a longitudinal mechanical wave of compressions and rarefactions travelling through air particles.

12 questions · Seed 104730 · Age guidance, not curriculum certification