Light and Sound

A section of a longitudinal wave where the particles are crowded together is called a

• A. rarefaction.
• B. vibration
• C.compression
• D. surface wave.

What do we call the part of a compressional wave that is spread a part?

• compression
• rarefaction
• crest
• trough

Waves that require a medium are called 

• mechanical waves
• transverse waves
• light waves
• gamma rays

Tags

NGSS.MS-PS4-2

Sound waves are _______________

• Transverse waves
• Longitudinal waves
• Circular waves
• Seismic waves

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

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. 

Which of the following would you hear as a low pitched sound? 

• sound wave with a frequency of 50 Hz
• sound wave with frequency of 10,000 Hz
• sound wave with an intensity of 10 dB
• sound wave with an intensity of 100 dB

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

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

When comparing the two waves that are shown, how would Wave A (green wave) differ than Wave B (black wave)?

• Wave A and B have the same amplitude, but wave B (black) has a lower pitch.
• Wave A and B have the same amplitude, but Wave A has a lower pitch. 
• Wave A and B have the same pitch, but Wave A is a softer sound. 
• Wave A and B have the same pitch, but Wave B is a softer sound. 

Tags

NGSS.MS-PS4-1

The number of wavelengths that pass a point each second

• crest
• amplitude
• frequency
• pitch