Sound Waves

Sound is produced by -----

• Heat energy

• Low temperatures

• Vibrations

• Friction

Tags

NGSS.MS-PS3-5

True or False: Sound needs a medium.

• True

• False

Tags

NGSS.MS-PS4-2

Sound waves are also known as ----- waves.

• Compression

• Longitudinal

• Neither

• Both longitudinal and compression

How high or low a sound is; depends on the frequency (greater frequency= higher pitch)

• pitch
• frequency
• sound
• medium

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

If you want to change the pitch of a sound, you have to change the ___

• frequency
• amplitude
• speed
• volume

This is the unit used to measure the volume of a sound. 

• Decibel
• Medium
• Vibration
• Oscilloscope

Tags

NGSS.MS-PS4-1

Why is sound able to travel faster through a solid than a gas?

• Gas molecules are packed tightly.
• Sound does not travel faster through a solid than a gas.
• Solid molecules are packed tightly.
• Gas molecules move slowly.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS4-2

How does a sound wave interact with a human ear?

• vibrates the ear drum
• bounces off the ear canal
• rotates the ear drum
• vibrates the ear canal

Tags

NGSS.MS-LS1-8

High Amplitude =__________________

• Louder sounds
• Quieter Sounds

Tags

NGSS.MS-PS4-1