16.4 SOUND HAS MANY USES.

Front

What is the natural frequency of a musical instrument?

Back

The specific frequency at which a musical instrument vibrates to produce sound.

Front

What is echolocation?

Back

A method used by animals, such as bats, to locate food by bouncing sound waves off objects.

Front

What is ultrasound used for in medicine?

Back

A technique used by doctors to check the health of fetuses during pregnancy.

Front

How does a telephone work?

Back

It converts the vibrations caused by sound waves into electrical signals.

Front

What is sonar?

Back

Instruments that use echoes to locate objects on the sea floor.

Front

Define sound waves.

Back

Vibrations that travel through air, water, or solid materials, which can be heard when they reach a person's or animal's ear.

Front

What is the speed of sound in air?

Back

Approximately 343 meters per second at room temperature.

Front

What is the role of the ear in hearing?

Back

The ear detects sound waves and converts them into signals that the brain interprets as sound.

Front

What is the difference between pitch and volume?

Back

Pitch refers to how high or low a sound is, while volume refers to how loud or soft a sound is.

Front

What is resonance?

Back

The amplification of sound that occurs when an object vibrates at its natural frequency.