Sound

Front

What is sound?

Back

Sound is a type of energy made by vibrations. When an object vibrates, it causes the air around it to move, creating sound waves.

Front

What is amplitude in sound?

Back

Amplitude refers to the height of the sound wave. A higher amplitude means a louder sound, while a lower amplitude means a quieter sound.

Front

What is frequency in sound?

Back

Frequency is the number of waves that pass a point in one second. It determines the pitch of the sound; higher frequency means a higher pitch.

Front

How does sound travel through different mediums?

Back

Sound travels at different speeds depending on the medium. It travels fastest in solids, slower in liquids, and slowest in gases.

Front

What is the cochlea?

Back

The cochlea is a spiral-shaped, fluid-filled structure in the inner ear that contains hair cells that convert sound vibrations into nerve signals.

Front

What is an echo?

Back

An echo is the reflection of sound that arrives at the listener after bouncing off a surface.

Front

What is the role of the ear drum?

Back

The ear drum is a thin membrane that vibrates when sound waves hit it, transmitting sound to the middle ear.

Front

What are the three bones in the middle ear?

Back

The three bones in the middle ear are the hammer (malleus), anvil (incus), and stirrup (stapes). They amplify sound vibrations.

Front

What is the difference between longitudinal and transverse waves?

Back

Longitudinal waves move in the same direction as the wave (like sound), while transverse waves move perpendicular to the direction of the wave (like light).

Front

What is refraction in sound?

Back

Refraction is the bending of sound waves as they pass from one medium to another, changing speed and direction.