Sounds All Around

The number of vibrations made in one second is known as the _________ of sound.

• Pitch

• Frequency

• Amplitude

• Velocity

A loud sound carries more ________ than a soft sound.

• frequency

• velocity

• energy

• speed

The normal hearing frequency range is about ______________ for a healthy young person.

• 30 Hz to 40,000 Hz

• 10 Hz to 50,000 Hz

• 5 Hz to 60,000 Hz

• 20 Hz to 20,000 Hz

A movement back and forth that produces sound is called _______________.

• Vibration

• Amplitude

• Sound

• Air

Sometimes when we are happy, we laugh, hum or whistle a tune. This shows sounds are used for___________.

• Communication

• Expression

• Interpretation

• Explanation

We can make sounds with our bodies by talking, singing or _____________.

• Writing

• Sleeping

• Resting

• Clapping