BJU Science 5 Ch. 9 Sound

Sound moves through matter in waves.

A sound wave carries particles of matter with it.

Both singing and speaking are caused by vibrations in the vocal cords inside the ______.

Sound waves that travel through matter are called _______ waves.

The science of sound

Timbre is how high or how low a sound is.

Most of the sounds we hear are a blend of several waves.

The echoes of high-frequency sound waves to "see" inside a human body

The quality of a sound that distinguishes it from other sounds is called _______.

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

The pitch of a sound is related to its _________.

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

Sound waves travel in all directions away from the source of the sound.

In a sound wave, the distance from one compression to the next is called __________.

Most sound waves gradually get louder as their energy is used up.

Rough, fuzzy surfaces usually ________ sound.

The intensity of a sound is measured in ____________.

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

A type of echolocation that locates items underwater

Objects that vibrate quickly have a _______ pitch.

The part of the sound wave where particles spread out

A machine that changes sound waves into electrical pictures seen on a graph is _______.

Smooth, hard surfaces usually ________ sound.

The loudness or softness of a sound is called its _________.

Most sounds we hear travel through ___________.

Sounds waves are able to occupy the same space without disturbing one another.

A harsh, unwanted, or surprising sound is often called a ________.

Sound moves the slowest through ________.

The number of waves that pass a point in one second is called _______.

A vibration that can be heard is called _________.

A disturbance that moves energy from place to place is called a _______.