Sound

Sound waves are mechanical waves.

The science of sound is called __________.

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

In a sound wave the particles of the matter vibrate back and forth in the same direction that sound energy is moving.

A quickly vibrating object has a __________ pitch.

Most sounds we hear travel through __________.

You would most likely hear echoes in a room with __________ walls.

People can usually hear sounds with frequencies between 20 and __________ Hz.

The part of sound wave where motion of each vibration pushes together some of particles of matter is called rarefaction.

Sound moves through matter in waves.

The pitch of a sound is related to its __________.

The distance from one compression to the next is called a frequency.

As the intensity of a sound increases, the volume also increases.

A slowly vibrating object will have a high pitch.

Timbre is how high or how low a sound is.

Scientists can use __________ to help them locate things underwater.

You can hear a choir sing because air particles remain in place and vibrate.

A machine that changes sound waves into electrical pictures that are seen on a graph is called an oscilloscope.

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

Pitch is how high or low a sound is.

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

Surfaces that are smooth and hard usually __________ sound.

A vibration that can be heard is called __________.

Sound waves move the slowest through solids.

The number of sound waves that pass a point in one second is a frequency.

A sound wave carries particles of matter with it.

The ability that some animals have to "see" with sound is called __________.

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

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

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

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

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

A slowly vibrating object has a low __________.

The intensity of a sound is measured in wavelengths.

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

Doctors can use __________ to help them see inside a person's body without doing surgery.

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

Most of the sounds we hear are a blend of several waves, each with different characteristics.

The intensity of a sound is measured in __________.

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