What are Sound Waves

Open Ended

Why do you think vibrating objects are important in the creation of sound?

Multiple Choice

What did the scientists use to observe the vibrational pattern of a tuning fork?

• A piece of chalk attached to a tuning fork

• A laser pointer and a mirror

• A microphone and a speaker

• A magnet and a coil

Open Ended

How do you think the length of a vibrating object affects the frequency of the sound produced?

Open Ended

Explain how the length of a vibrating object affects the pitch of the sound it produces, using examples from musical instruments.

Multiple Choice

Which of the following statements best explains the relationship between the frequency of a sound and its pitch as heard by the human ear?

• Higher frequency sounds are heard as higher pitches, and lower frequency sounds are heard as lower pitches.

• Higher frequency sounds are heard as lower pitches, and lower frequency sounds are heard as higher pitches.

• Frequency does not affect the pitch of a sound.

• Pitch is only determined by the amplitude of the sound.

​https://youtu.be/4xiMS-q3AX8

Multiple Select

Which of the following are true about sound waves?

• Amplitude determines loudness.

• Frequency determines pitch.

• Decibel is the SI unit for frequency.

• Longer vibrating objects produce lower frequency sounds.

Multiple Choice

Based on the waveform graphs shown, what does the amplitude of a sound wave represent to the human ear?

• Pitch

• Loudness

• Frequency

• Duration

Multiple Choice

The SI unit for sound intensity is:

• Hertz

• Amplitude

• frequency

• decibel

Open Ended

Explain the difference between how loudness and pitch are perceived in relation to the properties of sound waves.

Multiple Choice

Perceived pitch is the hearer's response to which wave property?

• Amplitude

• Velocity

• Frequency

Open Ended

Reflecting on what you learned about vibrating objects and sound waves, what is one question you still have or something you would like to explore further about how sound is created or observed?

Multiple Choice

How are sound waves produced according to the example of a tuning fork?

• By heating the tuning fork

• By vibrating the tuning fork

• By freezing the tuning fork

• By shining light on the tuning fork

Multiple Choice

Intensity/Amplitude of sound waves are

heard as loudness.

• True

• False