Sound Waves Study Guide

Front

What are the three main parts of the human ear?

Back

Outer ear, middle ear, inner ear.

Front

What is the function of the outer ear?

Back

The outer ear collects sound waves and directs them into the ear canal.

Front

What is the role of the eardrum in hearing?

Back

The eardrum vibrates when sound waves hit it, converting sound energy into mechanical energy.

Tags

NGSS.MS-PS4-1

Front

What is the middle ear composed of?

Back

The middle ear contains three small bones called the ossicles: the malleus, incus, and stapes.

Front

What is the function of the ossicles?

Back

The ossicles amplify and transmit sound vibrations from the eardrum to the inner ear.

Front

What is the term for the lowest point of a sound wave?

Back

Trough.

Front

What is the difference between frequency and amplitude in sound waves?

Back

Frequency refers to the number of waves that pass a point in a given time, while amplitude refers to the height of the wave, which determines loudness.

Tags

NGSS.MS-PS4-1

Front

What is the cochlea and its function?

Back

The cochlea is a spiral-shaped organ in the inner ear that converts sound vibrations into electrical signals for the brain.

Front

What is sound wave reflection?

Back

Sound wave reflection occurs when sound waves bounce off a surface, which can affect how sound is heard.

Tags

NGSS.MS-PS4-2

Front

What is the significance of the term 'crest' in sound waves?

Back

Crest refers to the highest point of a sound wave, indicating maximum displacement of the wave.

Tags

NGSS.MS-PS4-1