Waves Parts/Properties/Sound Review

An office room is used for recording audio. Based on the passage's models, which material could be added to the office walls to reduce the amount of echo on the recording?

• Adding foam to the walls in the room will help to reflect sound waves. This will help to prevent the sound waves from bouncing off the walls and creating an echo. 

• Adding foam to the walls in the room will help to absorb sound waves. This will help to prevent the sound waves from bouncing off the walls and creating an echo. 

Tags

NGSS.MS-PS4-2

How are wavelength and frequency related?

• 
  If the distance between the crests of the waves increase, the frequency decreases.

• If the distance between the crests of the waves decrease, the frequency decreases.

A student performs an experiment where he sends sound waves from the air through a solid, a liquid, and a gas. He records the speed of the wave traveling through each medium but forgets to label each medium. The table shows his observations. 

The student knows that sound travels through room temperature air at 343 m/s. Based on the student's results, which medium is the solid, the liquid, and the gas?

• X is the gas, Y is the liquid, and Z is the solid.

• X is the solid, Y is the liquid, and Z is the gas.

Tags

NGSS.MS-PS4-2

NGSS.MS-PS3-1

When Truman walks across the tile floor in his kitchen, the sound of his shoes is loud and sharp. Which of the following best describes what would happen if he walked over carpet in the same shoes?

• 
  The sound waves would move slower through the carpet and at a higher frequency, resulting in a quieter sound.

• The sound waves would move slower through the carpet and at a lower frequency, resulting in a quieter sound.

Tags

NGSS.MS-PS4-2

A pebble is thrown in a pond, and the water ripples on the surface. Of what type of wave is this an example?

• a transverse wave because the vibrations move parallel to the wave's direction of travel

• a transverse wave because the vibrations move perpendicular to the wave's direction of travel

Which BEST compares the difference between electromagnetic and mechanical waves?

• Electromagnetic waves are longitudinal, while mechanical waves are transverse.

• Electromagnetic waves can travel through a vacuum, while mechanical waves cannot.

What wave characteristic is responsible for the pitch of a sound?

• loudness

• quality

• intensity

• frequency

What is the term used to describe the greatest distance particles are displaced from their normal resting position in a transverse wave?

• frequency

• amplitude

• wavelength

• trough

Tags

NGSS.MS-PS4-1

Which property of a sound wave determines the pitch of a musical note?

• its length

• its amplitude

• its frequency

• its rest position

Which property of the sound wave changes when the volume is increased on a radio?

• cycle

• frequency

• amplitude

• wavelength

Tags

NGSS.MS-PS4-1