Sound Quiz

Sound in air can be best described as a

• transverse pressure wave in air

• longitudinal wave of compressions and rarefactions in air

• polarized transverse wave in air

• transgressive displacement wave in air

Tags

NGSS.MS-PS4-2

The speed of sound in air is approximately

• 140 m/s

• 340 m/s

• 1000 m/s

• 300,000,000 m/s

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

We set up a loudspeaker at the front of the classroom. The sound produced by the speaker will cause the air moleciles to

• vibrate horizontally backward and forward

• vibrate vertically up and down

• fly across the room at the speed of sound

• vibrate horizontally and vertically

Tags

NGSS.MS-PS4-1

The "pitch" of a musical noteis normally given in terms of its

• speed

• wavelength

• frequency

• amplitude

the loudness of a note is related to its

• period

• frequency

• speed

• amplitude

Tags

NGSS.MS-PS4-1

The normal frequency of hearing in a young person, who has not been to to many Metallica concerts, is about

• 10 Hz to 10 kHz

• 20 Hz to 20 kHz

• 50 Hz to 50 kHz

• 100 Hz to 100 kHz

The sound of a flute is different to the sound of a clarinet playing the same note, at the same loudness, because

• they produce different fundamental frequencies

• they produce different harmonics

• they produce different amplitudes

• one produces transverse waves and the other produces longitudinal waves

A sound wave of 5000 Hz is traveling through water, where it's speed is 1500 m/s. What is the wavelength of the sound?

• 0.15 m

• 0.3 m

• 1.5 m

• 3.0 m

Tags

NGSS.HS-PS4-1

Ultrasound travelling through steel has a wavelength of 0.2 m and a frequency of 24,500 Hz. What is the speed of sound in steel?

• 49 m/s

• 490 m/s

• 4,900 m/s

• 49,000 m/s

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

A man is yodeling in the Rockies (this does not happen every day). The echo of the yodel arrives back at the man, 15 s after the original yodel. How far is the man from the mountain, if the speed of sound on this day is 320 m/s

• 1200 m

• 2400 m

• 3600 m

• 4800 m

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2