NATURE OF SOUND

As the fire truck approached Mary, the pitch of the siren got higher. Once the fire truck passed and moved away, the siren's pitch got lower. This change in pitch is because of a change in the sound wave's

• concussion. 
• amplitude. 
• reflection.
• frequency. 

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.MS-PS4-1

A wave with a large wavelength will have a ______ frequency and _____ energy

• high, low
• high, high
• low, high
• low, low

Tags

NGSS.HS-PS4-1

A wave that requires a medium through which to travel

• mechanical wave
• chemical wave
• electromagnetic wave
• pitch

Highest point of a wave

• crest
• trough
• wavelength
• frequency

The number of wavelengths that pass a point each second

• crest
• amplitude
• frequency
• pitch

The shorter the wavelength the 

• shorter the frequency
• higher the freuqnecy
• frequency stays the same
• less energy

Tags

NGSS.HS-PS4-1

Sound is produced by

• music
• vibrations of molecules
• Electromagnetic Waves 
• Transverse Waves 

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

If distance C on the diagram increased, what would happen to the pitch? 

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

Tags

NGSS.MS-PS4-1

travels through solids fastest because the molecules are closer together

• speed of sound
• wavelength
• frequency
• amplitude