Science Chapter 9 - Sound - 5th grade BJU

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

Smooth, hard surfaces usually __________ sound.

A disturbance that moves energy from place to place

The part of a sound wave where the motion of each vibration pushes together particles of matter

A vibration that can be heard

A harsh, unwanted, or surprising sound is often called _____________.

Sound waves that travel through matter are described as ______________ waves.

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

The science of sound

The quality of a sound that distinguishes it from another sound

Sound moves through matter in _________.

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

Rough, fuzzy surfaces usually __________ sound.

Does a sound wave carry particles of matter with it?

Most of the sounds that we hear are a blend of __________________ waves.

A type of echolocation that locates items underwater

Both singing and speaking are caused by vibrations of the vocal cords inside the ________.

The loudness or softness of a sound

What is how high or low a sound is?

Objects that vibrate quickly have a __________ pitch.

The intensity of a sound is measured in________.

The pitch of a sound is related to its______.

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

Musical instruments that play at the same pitch and volume sound different because of ___.

Most sounds we hear travel through ________.

Sound moves the slowest through ____________.

The number of waves that pass a point in one second is the __________ of a sound wave.

A sound wave that bounces back towards its source and is heard again