Sound Frequency

The number of wavelengths that pass a point each second

• frequency
• wavelength
• pitch
• amplitude

Tags

NGSS.HS-PS4-1

Material (matter) through which a wave travels

• medium
• Doppler Effect
• sound
• pitch

Tags

NGSS.HS-PS4-1

When the sound source moves, the frequency changes
ex. police car siren sounding lower pitch after the car passes

• pitch
• frequency
• Doppler Effect
• medium

Tags

NGSS.HS-PS4-1

As a sound source approaches and then moves past a stationary observer, the observer will hear

• a steady rise in pitch
• a sudden drop in pitch
• a drop in pitch, then a rise in pitch
• a rise in pitch, then a drop in pitch

Tags

NGSS.HS-PS4-1

If the distance represented by the letter A were increased, how would it change the way the sound was heard?

• The sound would be higher. 
• The sound would be lower. 
• The sound would be softer. 
• The sound would be louder. 

Tags

NGSS.HS-PS4-1

Standing waves are created by

• Two identical waves reflecting off each other

• Two identical waves being diffracted together

• Two identical waves move through each other in opposite directions

• Two identical waves are diffracted from two identical sources

Tags

NGSS.HS-PS4-1

What number harmonic is shown in C

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS4-1

What number harmonic is shown in A

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS4-1

What number harmonic is shown in D

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS4-1

What number harmonic is shown in B

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS4-1