Sound Grade 7

Sound Grade 7

Multiple Choice

Sound is a form of energy produced by ______________.

• Vibrations

• Distances

• Prisms

• Forces

Multiple Choice

______________ sounds have a larger amplitude

• Quiet

• Loud

Multiple Choice

________ describes how LOUD a sound is.

• Amplitude

• Frequency

Multiple Choice

What does pitch depend on?

• amplitude 
• frequency
• intensity 
• volume of sound

Multiple Choice

The unit for measuring frequency is the ---

• Joule

• Hertz

• Gram

• Newton

Multiple Choice

The number of vibrations per second is known as ----

• Hertz

• Amplitude

• Frequency

Multiple Choice

If a sound has a high amplitude then it also has a ____________!!!

• fast echo
• slow pitch
• high volume
• low volume

Multiple Choice

A sound with a low pitch would have a:

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

Multiple Choice

A pendulum makes 33 complete back and forth cycles of vibration in 11 seconds. It's frequency is:

• 3.0 s

• 3.0 Hz

• 0.33 s

• 0.33 Hz

Multiple Choice

A boy notices that 45 complete waves travel past him in 90 seconds. What is the frequency of these water waves?

• 100 m

• 1 Hz

• 0.5 Hz

• 1m/s

Multiple Choice

After closing a deal with a client, Kent leans back in his swivel chair and spins around with a frequency of 0.5 Hz. What is Kent’s period of spin?

• 120 s

• 0.0083 s

• 0.5 s

• 2 s

Multiple Choice

The period of a wave is 4 seconds. What is the frequency?

• 1/4 Hz

• 1/4 sec

• 4 Hz

• 2 Hz

Multiple Choice

The blue-throated hummingbird flaps its wings 300 times a minute. What is its frequency?

• 5 hz

• 300 hz

• 300/60

• a lot?

Multiple Choice

A tennis coach paces back and forth along the sideline 10 times in 2 minutes. The frequency of her pacing is 

• 5 Hz
• 5 s
• 0.08 Hz
• 0.08 s

Multiple Choice

Frieda the fly flaps her wings back and forth 100 times each second. The period of her wings flapping is:

• 100 s

• 0.01 s

• 0.01 Hz

• 100 Hz

Multiple Choice

The period of a pendulum is 10 s. What is its frequency?

• 10 Hz

• 1 Hz

• 0.5 Hz

• 0.1 Hz

Multiple Choice

Matter that carries sound waves is called a _________

• low
• high
• medium
• surface

Multiple Choice

Sound will travel slowest through which of the following forms of matter?

• milk
• desk
• air
• door

Multiple Choice

Sound travels FASTEST through which of these materials?

• Air
• Empty space
• Metal
• Water

Multiple Choice

Sound travels as

• transverse waves

• longitudinal waves

• seismic waves

• air waves

Multiple Choice

Sound wave travels slowest in what medium?

• a. solid

• b. liquid

• c. gas

• d. plasma

Multiple Choice

Which sensory organ of the human body is used to detect transmit and transduce soundwaves

• eyes

• ears

• nose

• skin

Multiple Choice

Through which of the following can sound not travel?

• solids

• liquids

• gases

• empty space

Multiple Choice

Sound waves travel the fastest through ---

• Liquids

• Gases

• Solids

Multiple Choice

True or False: Sound needs a medium.

• True

• False

Multiple Choice

look at the picture. There are 4 sound wave with different amplitude and wavelength. Which sound wave has highest pitch?

• A

• B

• C

• D

Multiple Choice

look at the picture. There are 4 sound wave with different amplitude and wavelength. Which sound wave has loudest sound?

• A

• B

• C

• D

Multiple Choice

Which feature of sound is determined by amplitude?

• Pitch
• Smoothness
• Loudness
• A Wave

Multiple Choice

Which device measures sound waves?

• Oscilloscope
• Stethoscope 
• Radio
• I don't know

Multiple Choice

A sound with a high frequency has a _____ pitch. A sound with a ____ frequency has a low pitch.

• high, low

• low, high

• medium, high

• high, medium