S8P4F

To raise the pitch of the sound caused by a sound wave __________.

• increase the wavelength of the wave

• decrease the amplitude of the wave

• decrease the energy of the wave

• increase the frequency of the wave

How do sound waves move in air?

• the wave particles diffract around a barrier

• the wave particles move in a curvilinear motion

• the wave particles move via acceleration; that is, they increase speed

• the wave particles displace one another, with particles replacing each other

The graph that BEST represents the speed of sound relative to the density of the medium it is traveling through is

• A

• B

• C

• D

Tags

NGSS.HS-PS4-1

Sound becomes softer at a distance because the ________________.

• wavelength gets longer with distance, decreasing its amplitude

• energy of the sound wave is spread over a greater area, decreasing its intensity

• frequency of the sound wave becomes higher, increasing its pitch

• speed of the wave increases with distance, decreasing its frequency

Tags

NGSS.MS-PS4-1

As air temperature _________, the speed of the sound wave ___________.

• decreases; increases

• increases; decreases

• decreases; decreases

• The temperature of the air does not affect the speed of the sound wave.

Tags

NGSS.HS-PS4-1

Suppose that two sound waves passing through the same medium have different wavelengths. Which of the following is most likely to be the reason for the differing wavelengths?

• nature of the medium

• differences in amplitude

• differences in frequency

• the type of wave

Which type of wave would actually slow down when moving from the air into the ocean?

• sound waves

• light waves

• earthquake waves

• ocean surface waves

Tags

NGSS.MS-PS4-2

Suppose a mechanical wave is traveling through Medium A. When the wave enters Medium B, it speeds up. Which of the following statements is true about Medium A and Medium B?

• Medium A is a solid and Medium B is a gas.

• Medium A is a liquid and Medium B is a solid.

• Medium A is a gas and Medium B is a vacuum.

• Medium A is a vacuum and Medium B is a liquid.

Tags

NGSS.MS-PS4-2

Steven turns up the volume on his stereo. The stereo sends an electrical signal to the speakers. The signal changes the sound’s ____________.

• frequency

• wavelength

• speed

• intensity

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Using your knowledge of the properties of the different states of matter, determine which state of matter would travel the fastest.

• liquid carbon dioxide

• gaseous carbon dioxide

• dry ice – solid carbon dioxide

• none – sound travels at a constant rate