Sound Waves Lesson

Sound Waves

​

Multiple Choice

Sound is a form of _______.

• heat

• light

• energy

• matter

Multiple Select

Which of the following WOULD allow sound to travel from one place to another? Check all of the ones you answer YES for.

• solid

• space

• liquid

• gas

Multiple Choice

In which of the following will sound move the fastest?

• solid

• space

• liquid

• gas

Multiple Choice

Which area is a compression?

• A

• B

• both

• neither

These are the longitudinal waves produced by a flute and a trombone.

Compare/Contrast the sounds made by a flute and a trombone.

Multiple Choice

Which instrument has a shorter wavelength?

• flute

• trombone

Multiple Choice

Which instrument has a higher frequency?

• flute

• trombone

Frequency and Pitch

• DIRECT Relationship

• High Frequency = High Pitch

• Low Frequency = Low Pitch

Which sound has the longest wavelength?

Which has the shortest?

Which sound has the highest frequency?

Which has the lowest?

Multiple Choice

Which sound has the highest pitch?

• 1

• 2

• 3

• 4

Multiple Choice

If a sound source is moving towards the observer, the wavelength of the sound will get....

• longer

• shorter

• stay constant

Multiple Choice

If a sound source is moving towards the observer, the frequency of the sound will get....

• higher

• lower

• stay constant

Multiple Choice

As the police car moves towards person A on the left, the pitch of the siren gets....

• higher

• lower

• stays constant

Multiple Choice

As the police car moves away person B on the right, the pitch of the siren gets....

• higher

• lower

• stays constant

Poll

I can describe the wavelength and frequency of a longitudinal sound wave.

• Yes, absolutely!

• I guess, but I need more practice.

• Uhm.....no

Poll

I can determine if the pitch of a sound gets higher or lower by using the Doppler effect.

• Yes, absolutely!

• I guess, but I need more practice.

• Uhm.....no

Multiple Choice

Sound waves must travel through ___________________.

• air

• a medium

• an outward area

• a short

Sound waves and mediums

​

Multiple Choice

This is what you get when sound waves are reflected, or bounce back, off of a hard surface.

• Amplitude
• Pitch
• Volume
• Echo

Multiple Choice

If you want to change the pitch of a sound, you have to change the ___

• frequency
• amplitude
• speed
• volume

Multiple Choice

This is the unit used to measure the volume of a sound. 

• Decibel
• Medium
• Vibration
• Oscilloscope

Multiple Choice

This is the unit used to measure the volume of a sound. 

• Decibel
• Medium
• Vibration
• Oscilloscope

Multiple Choice

The speed of a sound wave depends on

• the frequency
• the medium
• both air temperature and medium
• the air temperature

Multiple Choice

The Doppler effect can cause an apparent change in...

• loudness
• intensity
• pitch
• reasonance

Multiple Choice

True or False: Sound travels better through solids than through liquids

• True 
• False

Multiple Choice

What is a pitch?

• highness or lowness of a sound
• the intensity of a vibration
• the amplitude of the sound wave
• volume of sound

Multiple Choice

Bats use ________ TO LOCATE MOSQUITOES IN THE AIR.

• solar
• ecology
• echolocation
• evolution

Multiple Choice

Sound waves can NOT travel through

• Air

• Water

• Earth

• space

Multiple Choice

Changing the frequency of a sound wave affects the...

• Volume

• Amplitude

• Pitch

• Resonance

Multiple Choice

Changing the amplitude of a sound wave affects the...

• Volume

• Frequency

• Pitch

• Wavelength

Multiple Choice

The pitch of a sound depends on its:

• frequency

• amplitude

• intensity

• loudness

Multiple Choice

What type of wave is a sound wave?

• Mechanical

• Electromagnetic

Multiple Choice

The higher the frequency, the ____________ the wavelength.

• longer

• shorter

• taller

• bolder

Multiple Choice

Frequency is measured in:

• decibels

• Hertz

• meters

• seconds

Multiple Choice

As the frequency of a sound wave ___, the pitch becomes lower.

• increases
• decreases
• does not change
• cancels out

Multiple Choice

As the amplitude of a sound increases, the loudness

• increases
• decreases
• does not change
• cancels out

Multiple Choice

Sound travels fastest through which medium?

• Solid

• Liquid

• Gas

Multiple Choice

Why is sound able to travel faster through a solid than a gas?

• Gas molecules are packed tightly.
• Solid molecules move quickly.
• Solid molecules are packed tightly.
• Gas molecules move slowly.

Multiple Choice

A sound with a high pitch would have:

• a low frequency
• a high frequency
• a low amplitude
• a high amplitude

Multiple Choice

Which of the following would have the highest amplitude?

• a dog barking
• clapping your hands
• knocking on a door
• thunder

Multiple Choice

Which sound wave has high frequency?

• sound wave 1
• sound wave 2
• sound wave 3
• sound wave 4

Multiple Choice

This is the unit used to measure the volume of a sound. 

• Decibel
• Medium
• Vibration
• Oscilloscope

Multiple Choice

This is what you get when sound waves are reflected, or bounce back, off of a hard surface.

• Amplitude
• Pitch
• Volume
• Echo

Multiple Choice

Why is the school library covered with carpet?

• So everyone can make a lot of noise
• to help absorb sounds to keep it quiet
• because it looks good
• to help absorb sounds so it can stay noisy

Multiple Choice

What is the Doppler Effect?

• A change in frequency due to the relative motion of a wave source and an observer

• When a wave overlaps with another wave

• When a wave bounces off of another object

• When a wave bends due to traveling through a different medium

Multiple Choice

An ambulance is driving towards you as you stand on the sidewalk. What happens to the pitch of the siren as it comes towards you?

• It increases

• It decreases

Multiple Choice

Look at the picture. Who is experiencing a higher pitched sound?

• Observer A

• Observer B

• There's no difference

Multiple Choice

Look at the picture. Who is experiencing a lower pitched sound?

• Observer A

• Observer B

• There is no difference

Multiple Choice

How can resonance break an object?

• forcing an object to vibrate at its natural frequency for a short time

• forcing an object to vibrate at different frequencies for a short time

• forcing an object to vibrate at different frequencies for a longtime

• forcing an object to vibrate at its natural frequency for a long time

Multiple Choice

A tuning fork starts to vibrate when a certain note is played on the piano, This is an example of _______.

• resonance
• refraction
• diffraction
• reflection

Multiple Choice

Diffraction is the bending of waves around a barrier

• True

• False

Multiple Choice

An echo is reflected sound

• True

• False