Unit 4 Sound Quiz

The factor that is most likely affecting the sound of the boys' shouting in the park is:

• Pressure

• Temperature

• Frequency

• Altitude

In the diagram, points N and M are best described as:

• Crests

• Troughs

• Rarefactions

• Compressions

Which of the following is the best example of resonance?

• A guitar body vibrating from the sound of a plucked string

• A telephone changing sound waves into electric signals

• A bat using ultrasonic waves to locate its next meal

• A jet producing a sonic boom as it breaks the sound barrier

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What role does the inner ear play in hearing?

• Captures sound waves

• Transmits sound waves from air to fluids

• Converts sound waves into electrical signals

• Removes high and low sound waves that are harmful

Which of the following accurately describes a difference between an audio CD and a digital file?

• Unlike the information stored on an audio CD, the information stored in a digital file can be converted into sound waves

• Unlike a digital file, an audio CD does not require a computer to record and play back sound

• An audio CD stores sounds as grooves on the CD’s surface, whereas a digital CD stores sounds as computer code

• Sounds can be stored on an audio CD but not in a digital file

Tags

NGSS.MS-PS4-3

If the same guitar string produced a louder sound, how would the string's appearance change?

• The string would vibrate over a shorter distance

• The string would vibrate to a lower height

• The string would vibrate to a greater height

• The string would vibrate over a longer distance

Tags

NGSS.MS-PS4-1

Two police cars are driving down the highway at 80 km/h. The first car turns on its siren, which has a frequency of 650 Hz. What frequency will the police officer in the second car hear?

• There is not enough information to answer this question

• Greater than 650 Hz

• Less than 650 Hz

• 650 Hz

Tags

NGSS.HS-PS4-1

For what purpose do bats use ultrasonic waves?

• Doppler effects

• Echolocation

• Ultrasound

• Sonar

What part of the telephone is responsible for converting sound waves into electrical signals?

• Speaker

• Headphone jack

• Battery

• Microphone

A sound wave travels through air at a speed of 350 m/s. Which of the following most likely describes the speed of that sound wave through water?

• 350 m/s

• Less than 350 m/s

• Greater than 350 m/s

• There is not enough information to answer this question

Tags

NGSS.MS-PS4-2