Ch. 9 Sound

Pitch is how high or low a sound is.

A slowly vibrating object will have a high pitch.

Sound waves move the slowest through solids.

A harsh, unwanted, or unexpected sound is often called a ___.

Sound waves can travel through_____ liquids, or _____ .

The loudness or softness of a sound is ____.

Musical instruments that are played at the same pitch and sound still sound different because of their timbre.

A rapid, back-and-forth movement is a ____.

You would most likely hear echos in a roome with ____ walls.

A disturbance that moves energy from place to place is called a____.

Too many large, loud vibrations can damage the human ear and cause ear pain.

Most souds we hear travel through ____.

Some people developed theories about sound through the study of _____.

Rough, soft, or fuzzy materials will ____ sound waves.

A sound wave that bounces back toward its source and is heard again is called an echo.

Timbre is how high or low a sound is.

Objects that vibrate quickly have a ___ pitch.

The part of a sound wave where the motion of each vibration pushes some of the particles of matter is called ____.

The echo of high-frequency sound waves to "see" inside a human body is an _____.

The intensity of a sound is measured in ____.