Sound Waves

Front

What is sound?

Back

Sound is a type of energy made by vibrations that travels through a medium (like air, water, or solids) and can be heard when it reaches a person's or animal's ear.

Front

What is a medium in the context of sound waves?

Back

A medium is the material or substance through which sound waves travel. Examples include air, water, and solids.

Front

What is frequency?

Back

Frequency is the number of wavelengths that pass a point in one second, measured in Hertz (Hz). It determines the pitch of the sound.

Front

What is pitch?

Back

Pitch is the perceived frequency of a sound; it determines how high or low a sound seems to a listener.

Front

What is amplitude?

Back

Amplitude is the height of a sound wave, which determines the loudness or volume of the sound.

Front

What is an echo?

Back

An echo is a reflected sound wave that is heard after the original sound has been produced.

Front

What happens to sound waves when they travel through different mediums?

Back

Sound waves travel at different speeds depending on the medium; they travel fastest in solids, slower in liquids, and slowest in gases.

Front

What is the Doppler Effect?

Back

The Doppler Effect is the change in frequency or pitch of a sound wave in relation to an observer moving relative to the source of the sound.

Front

How does changing the frequency affect the pitch of a sound?

Back

Increasing the frequency raises the pitch, while decreasing the frequency lowers the pitch.

Front

What is the relationship between wavelength and frequency?

Back

Wavelength and frequency are inversely related; as frequency increases, wavelength decreases, and vice versa.