Match up - Sound

A sound comes from the vibrations (2) that are produced when an object moves in some way.

The pitch (1) of a sound is how high or low the sound is.

Volume (5) is the degree of loudness or the intensity of a sound.

Frequency (4) is how fast the sound wave is oscillating.

The ear drum (3) is a thin flap of skin that is stretched tight like a drum and vibrates when sound hits it.

How is sound created and how does it travel?

Sound is created when an object vibrates, causing the surrounding medium (usually air) to vibrate as well. These vibrations, or sound waves, travel through the air and eventually reach our ears. The ear drum, which is part of the ear, picks up these vibrations and converts them into signals that our brain interprets as sound. The pitch of a sound is determined by the frequency of the vibrations: the higher the frequency, the higher the pitch. Volume, on the other hand, is related to the amplitude of the sound waves: the larger the amplitude, the louder the sound.