Longitudinal Waves

What is a longitudinal wave?

• A wave that moves perpendicular to the direction of wave travel.

• A wave that moves through the medium parallel to the direction of wave travel.

• A wave that does not require a medium to travel.

• A wave that moves in a circular motion.

Tags

NGSS.MS-PS4-1

Which part of a longitudinal wave is characterized by low density?

• Compression

• Rarefaction

• Crest

• Trough

Identify the high-density region of a longitudinal wave.

• Rarefaction

• Compression

• Amplitude

• Wavelength

Tags

NGSS.MS-PS4-2

Which of the following is an example of a longitudinal wave?

• Light wave

• Sound wave

• Water wave

• Radio wave

Explain how particles move in a longitudinal wave.

• Particles move in a circular motion.

• Particles move parallel to the direction of wave travel.

• Particles move perpendicular to the direction of wave travel.

• Particles do not move at all.

If a sound wave has a frequency of 500 Hz and travels at a speed of 340 m/s, what is its wavelength?

• 0.68 m

• 1.36 m

• 0.34 m

• 2.72 m

A tuning fork produces a sound wave with a frequency of 256 Hz. If the speed of sound in air is 343 m/s, calculate the wavelength of the sound wave.

• 1.34 m

• 1.25 m

• 1.50 m

• 1.75 m

Tags

NGSS.MS-PS4-1

What is the effect of increasing the amplitude of a sound wave?

• The pitch of the sound increases.

• The loudness of the sound increases.

• The speed of the sound increases.

• The frequency of the sound increases.

Tags

NGSS.MS-PS4-1

​ (a)   cause the medium to move perpendicular to the direction of the wave. ​ (b)   cause the medium to move parallel to the direction of the wave.

• Transverse waves
• Longitudinal waves
• Light waves

Tags

NGSS.MS-PS4-1

Label the wave.

a

b

Rarefaction

Compression

Tags

NGSS.MS-PS4-1