Rapid back and forth movement of an object is called:
Vibration refers to the rapid back and forth movement of an object.
A region in a longitudinal wave where the particles are closest together is called:
Compression is the region in a longitudinal wave where particles are closest together.
A region in a longitudinal wave where the particles are furthest apart is called:
Rarefaction is the region in a longitudinal wave where particles are furthest apart.
The last bone in the tiny chain of three bones in the ear is called:
The last bone in the chain of three bones in the ear is called the Stirrup.
In which of the following is the speed of sound the highest?
The speed of sound is highest in solids like gold.
When sound travels through air, the air particles:
When sound travels through air, the air particles vibrate along the direction of wave propagation.
Sound waves first enter the:
Sound waves first enter the ear canal.
The speed of sound in air is:
The speed of sound in air is approximately 343 m/s at room temperature.
When sound waves reach the ear drum:
When sound waves reach the ear drum, small bones behind it carry the vibration to the liquid in the inner ear.
What is sound?
Sound is a form of energy produced by vibrating objects.
How does a drum produce sound?
A drum produces sound by vibrating when hit.
Sound travels in the form of:
Sound travels in the form of longitudinal waves.
In a sound wave, what is ‘compression’?
Compression in a sound wave is where particles are close together.
In a sound wave, what is ‘rarefaction’?
Rarefaction in a sound wave is where particles are far apart.
Which of these produces sound by vibrating an air column?
A whistle produces sound by vibrating an air column.
What does the diaphragm of a loudspeaker do?
The diaphragm of a loudspeaker vibrates to produce sound waves.
How do sound waves reach your ears?
Sound waves reach your ears through the vibration of air particles.
What is created when particles are pushed close together in a sound wave?
Compression is created when particles are pushed close together in a sound wave.
Which medium allows sound to travel the fastest?
Sound travels fastest in solids like steel.
Why can't sound travel through space?
Sound cannot travel through space because there is no medium in space.
What is required for sound to travel?
Sound requires a medium to travel.
Why do we see lightning before we hear thunder?
We see lightning before we hear thunder because light travels faster than sound.
What happens to sound in a vacuum?
Sound does not travel in a vacuum.
What factor also affects the speed of sound besides medium?
Temperature also affects the speed of sound besides the medium.
In which of these would sound travel slowest?
Sound travels slowest in gases like air.
What role does temperature play in sound speed?
Higher temperature increases the speed of sound.
Which sentence is true about sound speed in different states of matter?
Sound travels fastest in solids.
What is the main function of the outer ear?
The main function of the outer ear is to collect sound waves and send them into the ear canal.
What happens when sound waves hit the ear drum?
When sound waves hit the ear drum, the ear drum vibrates and moves the three small bones.
Which part of the ear contains fluid and hair cells?
The inner ear contains fluid and hair cells.
What is the job of the three small bones in the middle ear?
The job of the three small bones in the middle ear is to carry vibrations to the inner ear.
What causes the tiny hair cells in the cochlea to move?
Vibrations from the middle ear cause the tiny hair cells in the cochlea to move.
What happens after hair cells in the cochlea sense vibration?
After hair cells in the cochlea sense vibration, a message is sent through the hearing nerve to the brain.
What is the role of the hearing nerve?
The role of the hearing nerve is to send sound messages to the brain.
Which part connects the middle ear to the nose?
The Eustachian tube connects the middle ear to the nose.
What is the unit used to measure noise intensity?
The unit used to measure noise intensity is the decibel.
At what noise level can hearing loss start to occur?
Hearing loss can start to occur at noise levels of 85 decibels.