Sound

Sound travels as

• transverse waves

• longitudinal waves

• seismic waves

• air waves

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Which part of the ear increases the size of the vibrations of sound waves entering the ear?

• outer ear
• ear canal
• middle ear
• inner ear

Tags

NGSS.MS-PS4-1

Which part of the ear acts as a funnel for sound waves?

• inner ear
• outer ear
• middle ear
• ear canal

As air particles are pushed together, they create a region of higher density and pressure in a longitudinal wave.  These areas are called:

• sound waves
• rarefactions
• compressions
• transverse wave

As air particles become less crowded a region of lower density and pressure is created. This part of a longitudinal wave is called a: 

• compression
• sound wave
• rarefaction
• transverse wave

Sound travels at different speeds through different mediums.  Through which medium would your voice travel the fastest?

• Air on a cold winter morning
• Air on a hot summer afternoon
• A metal wall
• A pool

Tags

NGSS.HS-PS4-1

This part of the ear is vibrated by sound waves.  It is a lightly stretched membrane that is the entrance to the middle ear.

• Pinna
• Ear Drum
• Hammer
• Cochlea

This fluid-filled snail-shaped sack in the inner ear contains hair cells attached to nerves which transmit sound information to the brain. 

• Cochlea
• Hammer
• Anvil
• Stirrup

Your __________ vibrate when you talk

• stomach
• lips
• ears
• vocal cords

An oscilloscope shows sound ________

• vibrations
• patterns
• imitations
• waves

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2